Updated on 2025/09/30

写真a

 
AMEMIYA TOMOHIRO
 
Organization
School of Engineering Associate Professor
Title
Associate Professor
Homepage
https://amemiya-lab.net
External link

News & Topics

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Degree

  • 博士（工学） ( 東京大学 )

Research Areas

  • Nanotechnology/Materials / Optical engineering and photon science

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electric and electronic materials

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Electron device and electronic equipment

Education

  • The University of Tokyo

    - 2009

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    Country： Japan

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  • The University of Tokyo   The Faculty of Engineering   Department of Electronic Engineering

    - 2004

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Research History

  • Institute of Science Tokyo   School of Engineering   Associate Professor

    2024.10

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  • Tokyo Institute of Technology   School of Engineering   Associate Professor

    2023.4 - 2024.9

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  • Tokyo Institute of Technology   Institute of Innovative Research   Assistant Professor

    2016.4 - 2023.3

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  • Tokyo Institute of Technology   Quantum Nanoelectronics Research Center   Assistant Professor

    2009.4 - 2016.3

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  • 日本学術振興会   特別研究員

    2007.4 - 2009.3

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Professional Memberships

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Papers

  • Wafer and chip-level characterization of edge-coupled photonic integrated circuits by cascaded grating couplers and spot-size converters

    Moataz Eissa, Ryuya Sasaki, Tsuyoshi Horikawa, Tomohiro Amemiya, Nobuhiko Nishiyama

    Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   63 ( 7 )   2024.7

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.35848/1347-4065/ad5fd5

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  • Coupling structure for enabling both wafer- and chip-level characterization of silicon photonic integrated circuits

    Moataz Eissa, Ryuya Sasaki, Tsuyoshi Horikawa, Tomohiro Amemiya, Nobuhiko Nishiyama

    2024 IEEE SILICON PHOTONICS CONFERENCE, SIPHOTONICS   2024

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    Language：English   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1109/SiPhotonics60897.2024.10543844

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  • Inverse Design of Low Back Reflection Grating Coupler

    Yuduan Wang, Tsuyoshi Horikawa, Yoshitaka Ohiso, Tomohiro Amemiya, Nobuhiko Nishiyama

    JSAP-Optica Joint Symposia in Proceedings JSAP-Optica Joint Symposia 2023 Abstracts, JSAP 2023   2023

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    Publishing type：Research paper (international conference proceedings)  

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  • High-temperature and high-efficiency operation of a membrane optical link with a buried-ridge-waveguide bonded on a Si substrate. International journal

    Weicheng Fang, Naoki Takahashi, Tsuyoshi Horikawa, Yoshitaka Ohiso, Ruihao Xue, Shunto Katsumi, Tomohiro Amemiya, Nobuhiko Nishiyama

    Optics express   30 ( 19 )   34420 - 34428   2022.9

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    Language：English   Publishing type：Research paper (scientific journal)  

    We demonstrate a membrane photonic integrated circuit (MPIC) that includes a membrane distributed feedback (DFB) laser and a p-i-n photodiode with a buried-ridge-waveguide (BRW) on a Si substrate, using a-Si nanofilm-assisted room-temperature surface activated bonding (SAB) for on-chip optical interconnection. The BRW structure enhanced the lateral optical confinement compared with that of the conventional flat structure. The directly bonded membrane DFB laser using SAB had a lower thermal resistance and higher output power than the previous structure using a benzocyclobutene (BCB) bonding layer. The DFB laser had a low threshold current of 0.27 mA at 25 °C. The maximum detected photocurrent and slope efficiency were 0.95 mA and 0.203 mA/mA, respectively, at 25 °C. The MPIC was successfully operated at temperatures up to 120 °C. The 3-dB bandwidths of 16.8 GHz and 10.1 GHz were achieved at 25 °C and 80 °C, respectively, and 25 Gbps and 15 Gbps non-return-to-zero (NRZ) 215-1 pseudo-random bit sequence signals were recorded at 25 °C and 80 °C, respectively.

    DOI： 10.1364/OE.468192

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  • High-speed infrared photonic band microscope using hyperspectral Fourier image spectroscopy. International journal

    Tomohiro Amemiya, Sho Okada, Hibiki Kagami, Nobuhiko Nishiyama, Yuanzhao Yao, Kazuaki Sakoda, Xiao Hu

    Optics letters   47 ( 10 )   2430 - 2433   2022.5

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    Language：English   Publishing type：Research paper (scientific journal)  

    In this study, we developed a photonic band microscope based on hyperspectral Fourier image spectroscopy. The developed device constructs an infrared photonic band structure from Fourier images for various wavelength obtained by hyperspectral imaging, which make it possible to speedily measure the dispersion characteristics of photonic nanostructures. By applying the developed device to typical photonic crystals and topological photonic crystals, we succeeded in obtaining band structures in good agreement with the theoretical prediction calculated by the finite element method. This device facilitates the evaluation of physical properties in various photonic nanostructures, and is expected to further promote related fields.

    DOI： 10.1364/OL.454865

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  • Selective excitation of optical vortex modes with specific charge numbers in band-tuned topological waveguides. International journal

    Hibiki Kagami, Tomohiro Amemiya, Sho Okada, Yahui Wang, Nobuhiko Nishiyama, Xiao Hu

    Optics letters   47 ( 9 )   2190 - 2193   2022.5

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    Language：English   Publishing type：Research paper (scientific journal)  

    We propose a method for selectively propagating optical vortex modes with specific charge numbers in a photonic integrated circuit (PIC) by using a topological photonic system. Specifically, by performing appropriate band tuning in two photonic structures that comprise a topological waveguide, one specific electromagnetic mode at the Γ point of a band diagram can be excited. Based on theoretical analysis, we successfully propagated optical vortex modes with specific charge numbers over a wide range in the C band in the proposed topological waveguide. The proposed method could be useful in controlling optical vortex signals at the chip level in future orbital angular momentum multiplexing technologies.

    DOI： 10.1364/OL.454946

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  • Influence of hand-arm self-avatar motion delay on the directional perception induced by an illusory sensation of being twisted. International journal

    Tomohiro Amemiya

    Scientific reports   12 ( 1 )   6626 - 6626   2022.4

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    Language：English   Publishing type：Research paper (scientific journal)  

    Sensory information from movements of body parts can alter their position when exposed to external physical stimuli. Visual information monitors the position and movement of body parts from an exterior perspective, whereas somatosensory information monitors them from an internal viewpoint. However, how such sensory data are integrated is unclear. In this study, a virtual reality (VR) system was used to evaluate the influence of the temporal difference between visual and somatosensory information from hand movements on the directional perception of a torque while modifying the visual appearance (human hand vs. non-human object) and visuohaptic congruency (congruent vs. incongruent) of self-avatars. Visual information was provided by the movement of the self-avatars in a VR environment, while somatosensory information was provided by vibrations with asymmetrical amplitudes that gave the participants the sensation of being continuously pushed or pulled without actually moving any body part. Delaying the movement of the avatar by 50 ms resulted in the sensitivity of the force direction perception to be lower with human hands than with non-human avatars, whereas a delay of 200 ms resulted in a higher sensitivity. This study can contribute to applications requiring multisensory integration in a VR environment.

    DOI： 10.1038/s41598-022-10543-y

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  • High Temperature Operation of Membrane Photonic Integrated Circuits with Buried-Ridge-Waveguide on Si

    Weicheng Fang, Naoki Takahashi, Tsuyoshi Horikawa, Yoshitaka Ohiso, Ruihao Xue, Shunto Katsumi, Tomohiro Amemiya, Nobuhiko Nishiyama

    Conference Digest - IEEE International Semiconductor Laser Conference   2022-October   2022

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    Publishing type：Research paper (international conference proceedings)  

    DOI： 10.23919/ISLC52947.2022.9943308

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  • Comment on "Spin-Momentum-Locked Edge Mode for Topological Vortex Lasing". International journal

    Xiao-Chen Sun, Xing-Xiang Wang, Tomohiro Amemiya, Xiao Hu

    Physical review letters   127 ( 20 )   209401 - 209401   2021.11

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1103/PhysRevLett.127.209401

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  • Comment on "Spin-Momentum-Locked Edge Mode for Topological Vortex Lasing"

    Xiao-Chen Sun, Xing-Xiang Wang, Tomohiro Amemiya, Xiao Hu

    PHYSICAL REVIEW LETTERS   127 ( 20 )   2021.11

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  • Lateral confinement enhanced membrane laser on Si with a buried-ridge-waveguide structure

    Naoki Takahashi, Weicheng Fang, Yoshitaka Ohiso, Tomohiro Amemiya, Nobuhiko Nishiyama

    JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS   38 ( 11 )   3340 - 3345   2021.11

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1364/JOSAB.438329

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  • Highly efficient vertical coupling to a topological waveguide with defect structure. International journal

    Hibiki Kagami, Tomohiro Amemiya, Sho Okada, Nobuhiko Nishiyama, Xiao Hu

    Optics express   29 ( 21 )   32755 - 32763   2021.10

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    In this study, we propose a defect structure that enhances the vertical coupling efficiency of circularly polarized light incident on topological waveguides consisting of triangle nanoholes with C6v symmetry arranged in honeycomb lattice. The defect structure was formed by removing triangle nanoholes from a certain hexagonal unit cell around the topological waveguide. As a result of comparing the coupling efficiency with and without the defect structure through three-dimensional finite-difference time-domain analysis, significant improvement in the vertical coupling efficiency was observed over the entire telecom C band (4460%@1530 nm). In addition, it was also found that the wavelength showing maximum coupling efficiency can be controlled over the entire C band by changing the arrangement of the dielectric around the defect structure.

    DOI： 10.1364/OE.432964

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  • On-Silicon Photonic Integrated Circuit toward On-chip Interconnection and Distributed Computing

    Nobuhiko Nishiyama, Tomohiro Amemiya

    IEEE Symposium on VLSI Circuits, Digest of Technical Papers   2021-   2021.6

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Electrical and Electronics Engineers Inc.  

    DOI： 10.23919/VLSICircuits52068.2021.9492356

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  • Lateral Optical Confinement Enhanced GaInAsP Membrane Laser on Si for On-chip Optical Interconnection

    Naoki Takahashi, Weicheng Fang, Yoshitaka Ohiso, Tomohiro Amemiya, Nobuhiko Nishiyama

    27TH INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC 2021)   2021

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    Language：English   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1109/ISLC51662.2021.9615765

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  • Fabrication of Si photonic waveguides by electron beam lithography using improved proximity effect correction

    Moataz Eissa, Takuya Mitarai, Tomohiro Amemiya, Yasuyuki Miyamoto, Nobuhiko Nishiyama

    Japanese Journal of Applied Physics   59 ( 12 )   2020.12

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing Ltd  

    DOI： 10.35848/1347-4065/abc78d

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  • Design and measurement of broadband loop mirror with curved directional coupler based on Si waveguides

    Takuya Mitarai, Eissa Moataz, Takayuki Miyazaki, Tomohiro Amemiya, Nobuhiko Nishiyama

    Japanese Journal of Applied Physics   59 ( 11 )   2020.11

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IOP Publishing Ltd  

    DOI： 10.35848/1347-4065/abbe68

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  • Topological converter for high-efficiency coupling between Si wire waveguide and topological waveguide. International journal

    Hibiki Kagami, Tomohiro Amemiya, Shou Okada, Nobuhiko Nishiyama, Xiao Hu

    Optics express   28 ( 22 )   33619 - 33631   2020.10

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    Replacing part of a conventional optical circuit with a topological photonic system allows for various controls of optical vortices in the optical circuit. As an underlying technology for this, in this study, we have realized a topological converter that provides high coupling efficiency between a normal silicon wire waveguide and a topological edge waveguide. After expanding the waveguide width while maintaining single-mode transmission from the Si wire waveguide, the waveguides are gradually narrowed from both sides by using a structure in which nanoholes with C6 symmetry are arranged in a honeycomb lattice. On the basis of the analysis using the three-dimensional finite-difference time-domain method, we actually fabricated a device in which a Si wire waveguide and a topological edge waveguide were connected via the proposed topological converter and evaluated its transmission characteristics. The resulting coupling efficiency between the Si wire waveguide and the topological edge waveguide through the converter was -4.49 dB/taper, and the coupling efficiency was improved by 5.12 dB/taper compared to the case where the Si wire waveguide and the topological edge waveguide were connected directly.

    DOI： 10.1364/OE.398421

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  • Control of slow-light effect in a metamaterial-loaded Si waveguide. International journal

    Makoto Tanaka, Tomohiro Amemiya, Hibiki Kagami, Nobuhiko Nishiyama, Shigehisa Arai

    Optics express   28 ( 16 )   23198 - 23208   2020.8

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    Language：English   Publishing type：Research paper (scientific journal)  

    A metamaterial is an artificial material designed to control the electric permittivity and magnetic permeability freely beyond naturally existing values. A promising application is a slow-light device realized using a combination of optical waveguides and metamaterials. This paper proposes a method to dynamically control the slow-light effect in a metamaterial-loaded Si waveguide. In this method, the slow-light effect (i.e., group index) is controlled by changing the phase of the control light incident on the device from a direction opposite to that of the signal light. The group index of the device could be continuously controlled from 63.6 to 4.2 at a wavelength of 1.55 µm.

    DOI： 10.1364/OE.389996

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  • Control of slow-light effect in a metamaterial-loaded Si waveguide

    Makoto Tanaka, Tomohiro Amemiya, Hibiki Kagami, Nobuhiko Nishiyama, Shigehisa Arai

    OPTICS EXPRESS   28 ( 16 )   23198 - 23208   2020.8

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1364/OE.389996

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  • High-quality, room-temperature, surface-activated bonding of GaInAsP/InP membrane structure on silicon

    Weicheng Fang, Naoki Takahashi, Yoshitaka Ohiso, Tomohiro Amemiya, Tomohiro Amemiya, Nobuhiko Nishiyama, Nobuhiko Nishiyama

    Japanese Journal of Applied Physics   59 ( 6 )   2020.7

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Physics Publishing  

    DOI： 10.35848/1347-4065/ab958a

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  • 1020-nm-Band Optical Cloak using Double-Layered Metamaterial Film

    Tomohiro Amemiya, Hibiki Kagami, Makoto Tanaka, Sho Okada, Nobuhiko Nishiyama, Mayu Takagi, Tatsuhiro Urakami

    Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS   2020-   2020.5

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Electrical and Electronics Engineers Inc.  

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  • Optical Vortex Beam Splitter using Topological Edge State Waveguide

    Sho Okada, Tomohiro Amemiya, Hibiki Kagami, Koichi Saito, Makoto Tanaka, Nobuhiko Nishiyama, Xiao Hu

    Conference Proceedings - Lasers and Electro-Optics Society Annual Meeting-LEOS   2020-   2020.5

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  • High-quality InP/SOI heterogeneous material integration by room temperature surface-activated bonding for hybrid photonic devices

    Yuning Wang, Kumi Nagasaka, Takuya Mitarai, Yoshitaka Ohiso, Tomohiro Amemiya, Nobuhiko Nishiyama

    JAPANESE JOURNAL OF APPLIED PHYSICS   59 ( 5 )   2020.5

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.35848/1347-4065/ab8434

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  • Remapping Peripersonal Space by Using Foot-Sole Vibrations Without Any Body Movement. International journal

    Tomohiro Amemiya, Yasushi Ikei, Michiteru Kitazaki

    Psychological science   30 ( 10 )   1522 - 1532   2019.10

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    The limited space immediately surrounding our body, known as peripersonal space (PPS), has been investigated by focusing on changes in the multisensory processing of audio-tactile stimuli occurring within or outside the PPS. Some studies have reported that the PPS representation is extended by body actions such as walking. However, it is unclear whether the PPS changes when a walking-like sensation is induced but the body neither moves nor is forced to move. Here, we show that a rhythmic pattern consisting of walking-sound vibrations applied to the soles of the feet, but not the forearms, boosted tactile processing when looming sounds were located near the body. The findings suggest that an extension of the PPS representation can be triggered by stimulating the soles in the absence of body action, which may automatically drive a motor program for walking, leading to a change in spatial cognition around the body.

    DOI： 10.1177/0956797619869337

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  • Metamaterial infrared refractometer for determining broadband complex refractive index. International journal

    Hibiki Kagami, Tomohiro Amemiya, Makoto Tanaka, Yuning Wang, Nobuhiko Nishiyama, Shigehisa Arai

    Optics express   27 ( 20 )   28879 - 28890   2019.9

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    Infrared refractive index is an indispensable parameter for various fields including infrared photonics. To date, critical-angle refractometers, V-block refractometers, and spectroscopic ellipsometry have been commonly used to measure the refractive index. Although every method has an accuracy of four decimal places for the refractive index, a measurable wavelength region is limited up to about 2 µm. In this study, we demonstrated a metamaterial infrared refractometer for determining broadband complex refractive index. Using the device, a broadband (40-120 THz; wavelength 2.5-7.5 µm) and high-precision(< 5 ×10-3) complex refractive index of polymethyl methacrylate was measured for the first time.

    DOI： 10.1364/OE.27.028879

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  • Broadband Si waveguide loop mirror with curved directional coupler

    Takuya Mitarai, Moataz Eissa, Takayuki Miyazaki, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    OECC/PSC 2019 - 24th OptoElectronics and Communications Conference/International Conference Photonics in Switching and Computing 2019   2019.7

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Electrical and Electronics Engineers Inc.  

    DOI： 10.23919/PS.2019.8818153

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  • Demonstration of slow-light effect in silicon-wire waveguides combined with metamaterials. International journal

    Tomohiro Amemiya, Satoshi Yamasaki, Makoto Tanaka, Hibiki Kagami, Keisuke Masuda, Nobuhiko Nishiyama, Shigehisa Arai

    Optics express   27 ( 10 )   15007 - 15017   2019.5

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    We demonstrated a novel slow-light Si-wire waveguide combined with metamaterials, which can be easily integrated with other Si photonics devices. The slow-light effect can be produced simply by placing metamaterials at an appropriate position on a Si-wire waveguide. It was confirmed that the large group index of more than 40 could be obtained because of a steep and discontinuous change of dispersion relation near the resonance frequency of metamaterials.

    DOI： 10.1364/OE.27.015007

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  • High Yield Chip-on-wafer Low Temperature Plasma Activated Bonding for III-V/Si Hybrid Photonic Integration

    Takehiko Kikuchi, Liu Bai, Takuya Mitarai, Hideki Yagi, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    Proceedings of 2019 6th International Workshop on Low Temperature Bonding for 3D Integration, LTB-3D 2019   8   2019.5

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Electrical and Electronics Engineers Inc.  

    DOI： 10.23919/LTB-3D.2019.8735148

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  • Design of GaInAs/InP membrane p-i-n photodiodes with back-end distributed Bragg reflector

    Xu Zheng, Tomohiro Amemiya, Zhichen Gu, Koichi Saito, Nobuhiko Nishiyama, Shigehisa Arai

    JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS   36 ( 4 )   1054 - 1061   2019.4

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1364/JOSAB.36.001054

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  • Effect of increasing gate capacitance on the performance of a p-MoS2/HfS2 van der Waals heterostructure tunneling field-effect transistor

    Wenlun Zhang, Seiko Netsu, Toru Kanazawa, Tomohiro Amemiya, Yasuyuki Miyamoto

    JAPANESE JOURNAL OF APPLIED PHYSICS   58   2019.4

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.7567/1347-4065/aaf699

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  • Control of slow-light effect in metamaterial-loaded Si waveguide

    Makoto Tanaka, Tomohiro Amemiya, Satoshi Yamasaki, Hibiki Kagami, Keisuke Masuda, Nobuhiko Nishiyama, Shigehisa Arai

    2019 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)   2019

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  • Investigation of InP/Si bonding condition for optimizing Photoluminescence property by Surface Activated Bonding based on Fast Atom Beam

    Yuning Wang, Takuya Mitarai, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    2019 COMPOUND SEMICONDUCTOR WEEK (CSW)   2019

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  • Investigation of Photoluminescence property of InP/SOI wafer after bonding experiment using Surface Activated Bonding based on Fast Atom Beam

    Yuning Wang, Moataz Eissa, Takuya Mitarai, Tomohiro Amemiya, Nobuhiko Nishiyama

    Optics InfoBase Conference Papers   2019   2019

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：OSA - The Optical Society  

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  • Investigation of bonding strength between (InP, Si)/SiO2 and Si by Surface Activated Bonding based on Fast Atom Beam assisted by Si nano-film

    Weicheng Fang, Yuning Wang, Tomohiro Amemiya, Nobuhiko Nishiyama

    Optics InfoBase Conference Papers   2019   2019

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：OSA - The Optical Society  

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  • Metamaterial infrared refractometer for detecting broadband complex refractive index of liquid material

    Hibiki Kagami, Tomohiro Amemiya, Keisuke Masuda, Makoto Tanaka, Nobuhiko Nishiyama, Shigehisa Arai

    Optics InfoBase Conference Papers   2019   2019

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：OSA - The Optical Society  

    DOI： 10.1364/CLEO_SI.2019.SM4F.3

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  • Analysis of an I/O metal grating coupler for organic membrane photonic integrated circuits

    Keisuke Masuda, Tomohiro Amemiya, Hibiki Kagami, Makoto Tanaka, Nobuhiko Nishiyama, Shigehisa Arai

    Japanese Journal of Applied Physics   58 ( 5 )   2019

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Institute of Physics Publishing  

    DOI： 10.7567/1347-4065/ab1336

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  • Orbital angular momentum MUX/DeMUX module using vertically curved Si waveguides

    Tomohiro Amemiya, Tomoya Yoshida, Yuki Atsumi, Nobuhiko Nishiyama, Yasuyuki Miyamoto, Youichi Sakakibara, Shigehisa Arai

    Optics InfoBase Conference Papers   2019   2019

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：OSA - The Optical Society  

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  • Fabrication of Si photonics waveguides by thick resist-mask electron beam lithography proximity effect correction Reviewed

    Moataz Eissa, Takuya Mitarai, Tomohiro Amemiya, Nobuhiko Nishiyama, Yasuyuki Miyamoto

    Optics InfoBase Conference Papers   2019   2019

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：OSA - The Optical Society  

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  • Buried-ridge-waveguide Type GaInAsP/InP Membrane Distributed-Reflector Lasers for Reduction of Differential Resistance

    Naoki Takahashi, Nagisa Nakamura, Takamasa Yoshida, Weicheng Fang, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    2019 COMPOUND SEMICONDUCTOR WEEK (CSW)   2019

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  • Energy Cost Analysis of Ridge-Waveguide Type Membrane Distributed-Reflector Lasers for On-chip Application

    Nagisa Nakamura, Takamasa Yoshida, Weicheng Fang, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    Conference Digest - IEEE International Semiconductor Laser Conference   2018-   153 - 154   2018.10

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：Institute of Electrical and Electronics Engineers Inc.  

    DOI： 10.1109/ISLC.2018.8516212

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  • Highly efficient double-taper-type coupler between III-V/silicon-on-insulator hybrid device and silicon waveguide

    Junichi Suzuki, Fumihito Tachibana, Kumi Nagasaka, Moataz S. A. M. Eissa, Liu Bai, Takuya Mitarai, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    JAPANESE JOURNAL OF APPLIED PHYSICS   57 ( 9 )   2018.9

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.7567/JJAP.57.094101

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  • Si-Photonics-Based Layer-to-Layer Coupler Toward 3D Optical Interconnection Reviewed

    Nishiyama Nobuhiko, Kang JoonHyun, Kuno Yuki, Itoh Kazuto, Atsumi Yuki, Amemiya Tomohiro, Arai Shigehisa

    IEICE TRANSACTIONS ON ELECTRONICS   E101C ( 7 )   501 - 508   2018.7

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  • Type-II HfS2/MoS2 Heterojunction Transistors Reviewed

    Netsu Seiko, Kanazawa Toru, Uwanno Teerayut, Amemiya Tomohiro, Nagashio Kosuke, Miyamoto Yasuyuki

    IEICE TRANSACTIONS ON ELECTRONICS   E101C ( 5 )   338 - 342   2018.5

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  • Analysis of the slow-light effect in silicon wire waveguides with metamaterials

    Satoshi Yamasaki, Tomohiro Amemiya, Zhichen Gu, Junichi Suzuki, Nobuhiko Nishiyama, Shigehisa Arai

    JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS   35 ( 4 )   797 - 804   2018.4

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1364/JOSAB.35.000797

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  • 20 Gbps operation of membrane-based GaInAs/InP waveguide-type p-i-n photodiode bonded on Si substrate

    Zhichen Gu, Daisuke Inoue, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    Applied Physics Express   11 ( 2 )   2018.2

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    DOI： 10.7567/APEX.11.022102

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  • 20-Gbit/s direct modulation of GaInAsP/InP membrane distributed-reflector laser with energy cost of less than 100 fJ/bit

    Takahiro Tomiyasu, Daisuke Inoue, Takuo Hiratani, Kai Fukuda, Nagisa Nakamura, Tatsuya Uryu, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    APPLIED PHYSICS EXPRESS   11 ( 1 )   2018.1

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    DOI： 10.7567/APEX.11.012704

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  • Slow-light Si-wire Waveguide with Metamaterial

    Satoshi Yamasaki, Tomohiro Amemiya, Zhichen Gu, Junichi Suzuki, Keisuke Masuda, Hibiki Kagami, Nobuhiko Nishiyama, Shigehisa Arai

    2018 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)   2018

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  • Type-II HfS2/MoS2 Heterojunction Transistors.

    Seiko Netsu, Toru Kanazawa, Teerayut Uwanno, Tomohiro Amemiya, Kosuke Nagashio, Yasuyuki Miyamoto

    IEICE Trans. Electron.   101-C ( 5 )   338 - 342   2018

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    DOI： 10.1587/transele.E101.C.338

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  • Design of GaInAs/InP membrane p-i-n photodiode with back-end distributed-Bragg-reflector (DBR)

    Xu Zheng, Zhichen Gu, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    Optics InfoBase Conference Papers   2018   2018

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：OSA - The Optical Society  

    DOI： 10.1364/cleopr.2018.tu2h.5

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  • Integrated Optical Link on Si Substrate Using Membrane Distributed-Feedback Laser and p-i-n Photodiode Reviewed

    Daisuke Inoue, Takuo Hiratani, Kai Fukuda, Takahiro Tomiyasu, Zhichen Gu, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE Journal of Selected Topics in Quantum Electronics   23 ( 6 )   2017.11

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    DOI： 10.1109/JSTQE.2017.2716184

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  • High-Efficiency Operation of Membrane Distributed-Reflector Lasers on Silicon Substrate Reviewed

    Takuo Hiratani, Daisuke Inoue, Takahiro Tomiyasu, Kai Fukuda, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE Journal of Selected Topics in Quantum Electronics   23 ( 6 )   2017.11

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    DOI： 10.1109/JSTQE.2017.2704289

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  • High Efficiency Operation of GaInAsP/InP Membrane Distributed-Reflector Laser on Si Reviewed

    Takuo Hiratani, Daisuke Inoue, Takahiro Tomiyasu, Kai Fukuda, Nagisa Nakamura, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE PHOTONICS TECHNOLOGY LETTERS   29 ( 21 )   1832 - 1835   2017.11

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    DOI： 10.1109/LPT.2017.2753263

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  • High-Efficiency Operation of Membrane Distributed-Reflector Lasers on Silicon Substrate Reviewed

    Takuo Hiratani, Daisuke Inoue, Takahiro Tomiyasu, Kai Fukuda, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS   23 ( 6 )   2017.11

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    DOI： 10.1109/JSTQE.2017.2704289

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  • Integrated Optical Link on Si Substrate Using Membrane Distributed-Feedback Laser and p-i-n Photodiode Reviewed

    Daisuke Inoue, Takuo Hiratani, Kai Fukuda, Takahiro Tomiyasu, Zhichen Gu, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS   23 ( 6 )   2017.11

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    DOI： 10.1109/JSTQE.2017.2716184

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  • On-chip membrane-based GaInAs/InP waveguide-type p-i-n photodiode fabricated on silicon substrate. International journal

    Zhichen Gu, Tatsuya Uryu, Nagisa Nakamura, Daisuke Inoue, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    Applied optics   56 ( 28 )   7841 - 7848   2017.10

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    Toward the realization of ultralow-power-consumption on-chip optical interconnection, two types of membrane-based GaInAs/InP p-i-n photodiodes were fabricated on Si host substrates by using benzocyclobutene bonding. A responsivity of 0.95 A/W was estimated with a conventional waveguide-type photodiode with an ∼30-μm-long absorption region. The fitting curves based on the experimental data indicated that an absorption efficiency above 90% could be achieved with a length of 10 μm. In addition, increased absorption per length of a photonic crystal waveguide-type photodiode was obtained because of the enhanced lateral optical confinement or the slow-light effect, enabling a further reduction in the device length.

    DOI： 10.1364/AO.56.007841

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  • On-chip membrane-based GaInAs/InP waveguide-type p-i-n photodiode fabricated on silicon substrate Reviewed

    Zhichen Gu, Tatsuya Uryu, Nagisa Nakamura, Daisuke Inoue, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    APPLIED OPTICS   56 ( 28 )   7841 - 7848   2017.10

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    DOI： 10.1364/AO.56.007841

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  • Metamaterial Waveguide Devices for Integrated Optics. International journal

    Tomohiro Amemiya, Toru Kanazawa, Satoshi Yamasaki, Shigehisa Arai

    Materials (Basel, Switzerland)   10 ( 9 )   2017.9

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    We show the feasibility of controlling the magnetic permeability of optical semiconductor devices on InP-based photonic integration platforms. We have achieved the permeability control of GaInAsP/InP semiconductor waveguides by combining the waveguide with a metamaterial consisting of gate-controlled split ring resonators. The split-ring resonators interact magnetically with light travelling in the waveguide and move the effective relative permeability of the waveguide away from 1 at optical frequencies. The variation in permeability can be controlled with the gate voltage. Using this variable-permeability waveguide, we have built an optical modulator consisting of a GaInAsP/InP Mach-Zehnder interferometer for use at an optical communication wavelength of 1.55 μm. The device changes the permeability of its waveguide arm with controlling gate voltage, thereby varying the refractive index of the arm to modulate the intensity of light. For the study of variable-permeability waveguide devices, we also propose a method of extracting separately the permittivity and permeability values of devices from the experimental data of light transmission. Adjusting the permeability of optical semiconductors to the needs of device designers will open the promising field of 'permeability engineering'. Permeability engineering will facilitate the manipulation of light and the management of photons, thereby contributing to the development of novel devices with sophisticated functions for photonic integration.

    DOI： 10.3390/ma10091037

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  • Metamaterial Waveguide Devices for Integrated Optics Reviewed

    Tomohiro Amemiya, Toru Kanazawa, Satoshi Yamasaki, Shigehisa Arai

    MATERIALS   10 ( 9 )   2017.9

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  • Organic membrane photonic integrated circuits (OMPICs). International journal

    Tomohiro Amemiya, Toru Kanazawa, Takuo Hiratani, Daisuke Inoue, Zhichen Gu, Satoshi Yamasaki, Tatsuhiro Urakami, Shigehisa Arai

    Optics express   25 ( 16 )   18537 - 18552   2017.8

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    We propose the concept of organic membrane photonic integrated circuits (OMPICs), which incorporate various functions needed for optical signal processing into a flexible organic membrane. We describe the structure of several devices used within the proposed OMPICs (e.g., transmission lines, I/O couplers, phase shifters, photodetectors, modulators), and theoretically investigate their characteristics. We then present a method of fabricating the photonic devices monolithically in an organic membrane and demonstrate the operation of transmission lines and I/O couplers, the most basic elements of OMPICs.

    DOI： 10.1364/OE.25.018537

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  • Organic membrane photonic integrated circuits (OMPICs) Reviewed

    Tomohiro Amemiya, Toru Kanazawa, Takuo Hiratani, Daisuke Inoue, Zhichen Gu, Satoshi Yamasaki, Tatsuhiro Urakami, Shigehisa Arai

    OPTICS EXPRESS   25 ( 16 )   18537 - 18552   2017.8

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    DOI： 10.1364/OE.25.018537

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  • Optically driven terahertz wave modulator using ring-shaped microstripline with GaInAs photoconductive mesa structure Reviewed

    Satoshi Yamasaki, Akio Yasui, Tomohiro Amemiya, Kentaro Furusawa, Shinsuke Hara, Issei Watanabe, Atsushi Kanno, Norihiko Sekine, Zhichen Gu, Nobuhiko Nishiyama, Akifumi Kasamatsu, Shigehisa Arai

    IEEE Journal of Selected Topics in Quantum Electronics   23 ( 4 )   2017.7

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    DOI： 10.1109/JSTQE.2017.2662660

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  • Performance Improvement of HfS2 Transistors by Atomic Layer Deposition of HfO2 Reviewed

    Toru Kanazawa, Tomohiro Amemiya, Vikrant Upadhyaya, Atsushi Ishikawa, Kenji Tsuruta, Takuo Tanaka, Yasuyuki Miyamoto

    IEEE TRANSACTIONS ON NANOTECHNOLOGY   16 ( 4 )   582 - 587   2017.7

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    DOI： 10.1109/TNANO.2017.2661403

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  • Optically Driven Terahertz Wave Modulator Using Ring- haped Microstripline With GaInAs Photoconductive Mesa Structure Reviewed

    Satoshi Yamasaki, Akio Yasui, Tomohiro Amemiya, Kentaro Furusawa, Shinsuke Hara, Issei Watanabe, Atsushi Kanno, Norihiko Sekine, Zhichen Gu, Nobuhiko Nishiyama, Akifumi Kasamatsu, Shigehisa Arai

    IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS   23 ( 4 )   2017.7

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    DOI： 10.1109/JSTQE.2017.2662660

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  • Introduction of AlInAs-oxide current-confinement structure into GaInAsP/SOI hybrid Fabry-Perot laser Reviewed

    Junichi Suzuki, Yusuke Hayashi, Satoshi Inoue, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    JAPANESE JOURNAL OF APPLIED PHYSICS   56 ( 6 )   2017.6

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    DOI： 10.7567/JJAP.56.062103

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  • High-differential quantum efficiency operation of GaInAsP/InP membrane distributed-reflector laser on Si Reviewed

    Takahiro Tomiyasu, Takuo Hiratani, Daisuke Inoue, Nagisa Nakamura, Kai Fukuda, Tatsuya Uryu, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    APPLIED PHYSICS EXPRESS   10 ( 6 )   2017.6

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    DOI： 10.7567/APEX.10.062702

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  • Waveguide loss reduction of lateral-current-injection type GaInAsP/InP membrane Fabry-Perot laser Reviewed

    Takahiro Tomiyasu, Takuo Hiratani, Daisuke Inoue, Nagisa Nakamura, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    JAPANESE JOURNAL OF APPLIED PHYSICS   56 ( 5 )   2017.5

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    DOI： 10.7567/JJAP.56.050311

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  • Analysis of plasmonic phase modulator with furan-thiophene chromatophore electro-optic polymer. International journal

    Naoya Hojo, Tomohiro Amemiya, Kazuto Itoh, Zhichen Gu, Chiyumi Yamada, Toshiki Yamada, Junichi Suzuki, Yusuke Hayashi, Nobuhiko Nishiyama, Akira Otomo, Shigehisa Arai

    Applied optics   56 ( 8 )   2053 - 2059   2017.3

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    We analyzed two types of Mach-Zehnder plasmonic modulators on a silicon-on-insulator platform with a different furan-thiophene chromophore electro-optic polymer to compare to other reports. The metal-taper coupling structure and the metal-insulator-metal cross section in our design have been optimized based on the new material parameters. According to the simulation result, a modulator with a slot width of 50 nm and an on-off voltage of Vπ=20  V can be 21 μm long, leading to a total modulator loss of 15 dB, which is comparable to previously reported devices.

    DOI： 10.1364/AO.56.002053

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  • Analysis of plasmonic phase modulator with furan-thiophene chromatophore electro-optic polymer Reviewed

    Naoya Hojo, Tomohiro Amemiya, Kazuto Itoh, Zhichen Gu, Chiyumi Yamada, Toshiki Yamada, Junichi Suzuki, Yusuke Hayashi, Nobuhiko Nishiyama, Akira Otomo, Shigehisa Arai

    APPLIED OPTICS   56 ( 8 )   2053 - 2059   2017.3

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    DOI： 10.1364/AO.56.002053

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  • 90 degrees C continuous-wave operation of GaInAsP/InP membrane distributed-reflector laser on Si substrate Reviewed

    Takuo Hiratani, Daisuke Inoue, Takahiro Tomiyasu, Kai Fukuda, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    APPLIED PHYSICS EXPRESS   10 ( 3 )   2017.3

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    DOI： 10.7567/APEX.10.032702

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  • Preliminary reliability test of lateral-current-injection GaInAsP/InP membrane distributed feedback laser on Si substrate fabricated by adhesive wafer bonding

    Kai Fukuda, Daisuke Inoue, Takuo Hiratani, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    JAPANESE JOURNAL OF APPLIED PHYSICS   56 ( 2 )   2017.2

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    DOI： 10.7567/JJAP.56.028002

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  • Study of a slow-light-enhanced membrane photodetector for realizing on-chip interconnection with low power consumption Reviewed

    Zhichen Gu, Takuo Hiratani, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS   34 ( 2 )   440 - 446   2017.2

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    DOI： 10.1364/JOSAB.34.000440

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  • Visual area V5/hMT+ contributes to perception of tactile motion direction: a TMS study. International journal

    Tomohiro Amemiya, Brianna Beck, Vincent Walsh, Hiroaki Gomi, Patrick Haggard

    Scientific reports   7   40937 - 40937   2017.1

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    Human imaging studies have reported activations associated with tactile motion perception in visual motion area V5/hMT+, primary somatosensory cortex (SI) and posterior parietal cortex (PPC; Brodmann areas 7/40). However, such studies cannot establish whether these areas are causally involved in tactile motion perception. We delivered double-pulse transcranial magnetic stimulation (TMS) while moving a single tactile point across the fingertip, and used signal detection theory to quantify perceptual sensitivity to motion direction. TMS over both SI and V5/hMT+, but not the PPC site, significantly reduced tactile direction discrimination. Our results show that V5/hMT+ plays a causal role in tactile direction processing, and strengthen the case for V5/hMT+ serving multimodal motion perception. Further, our findings are consistent with a serial model of cortical tactile processing, in which higher-order perceptual processing depends upon information received from SI. By contrast, our results do not provide clear evidence that the PPC site we targeted (Brodmann areas 7/40) contributes to tactile direction perception.

    DOI： 10.1038/srep40937

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  • 光学迷彩とメタマテリアルフィルム

    雨宮智宏, 金澤徹, 平谷拓生, 西山伸彦, 荒井滋久, 浦上達宣, 田中拓男, 石川篤

    光技術コンタクト   54 ( 11 )   27‐36 - 36   2016.11

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  • Crystalline/Amorphous Si Integrated Optical Couplers for 2D/3D Interconnection Reviewed

    Kazuto Itoh, Yuki Kuno, Yusuke Hayashi, Junichi Suzuki, Naoya Hojo, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS   22 ( 6 )   2016.11

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    DOI： 10.1109/JSTQE.2016.2566263

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  • 二次元材料HfS2を用いたMOSトランジスタ

    金澤徹, 雨宮智宏, 宮本恭幸

    機能材料   36 ( 9 )   46‐52 - 52   2016.9

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  • 「透明人間」と非対称光学迷彩

    雨宮智宏, 荒井滋久

    パリティ   31 ( 9 )   12‐17 - 17   2016.9

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  • Low-bias current 10 Gbit/s direct modulation of GaInAsP/InP membrane DFB laser on silicon. International journal

    Daisuke Inoue, Takuo Hiratani, Kai Fukuda, Takahiro Tomiyasu, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    Optics express   24 ( 16 )   18571 - 9   2016.8

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    Low-power consumption directly-modulated lasers are a key device for on-chip optical interconnection. We fabricated a GaInAsP/InP membrane DFB laser that exhibited a low-threshold current of 0.21 mA and single-mode operation with a sub-mode suppression ratio of 47 dB at a bias current of 2 mA. A high modulation efficiency of 11 GHz/mA1/2 was obtained. A 10 Gbit/s direct modulation using a non-return-to-zero 231-1 pseudo-random bit sequence signal was performed with a bias current of 1 mA, which is the lowest bias current ever reported for direct modulation of a DFB laser. A bit-error rate of 10-9 was successfully achieved.

    DOI： 10.1364/OE.24.018571

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  • GaInAsP/silicon-on-insulator hybrid laser with ring-resonator-type reflector fabricated by N-2 plasma-activated bonding Reviewed

    Yusuke Hayashi, Junichi Suzuki, Satoshi Inoue, Shovon Muhammad Tanvir Hasan, Yuki Kuno, Kazuto Itoh, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    JAPANESE JOURNAL OF APPLIED PHYSICS   55 ( 8 )   2016.8

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    DOI： 10.7567/JJAP.55.082701

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  • Low-bias current 10 Gbit/s direct modulation of GaInAsP/InP membrane DFB laser on silicon Reviewed

    Daisuke Inoue, Takuo Hiratani, Kai Fukuda, Takahiro Tomiyasu, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    OPTICS EXPRESS   24 ( 16 )   18571 - 18579   2016.8

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    DOI： 10.1364/OE.24.018571

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  • Interlayer Polarization Beam Splitter Based on Asymmetrical Si Wire Directional Coupler Reviewed

    Yuki Atsumi, Ryohei Takei, Makoto Okano, Tomohiro Amemiya, Youichi Sakakibara, Masahiko Mori

    IEEE PHOTONICS TECHNOLOGY LETTERS   28 ( 14 )   1545 - 1548   2016.7

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    DOI： 10.1109/LPT.2016.2558286

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  • Metamaterials and camouflage.

    雨宮智宏, 荒井滋久

    応用物理   85 ( 6 )   501‐506 - 506   2016.6

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  • Few-layer HfS2 transistors Reviewed

    Toru Kanazawa, Tomohiro Amemiya, Atsushi Ishikawa, Vikrant Upadhyaya, Kenji Tsuruta, Takuo Tanaka, Yasuyuki Miyamoto

    SCIENTIFIC REPORTS   6   2016.3

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    DOI： 10.1038/srep22277

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  • GaInAsP/SOI Hybrid Laser with AlInAs-oxide Confinement Structure Fabricated by Plasma Activated Bonding

    Junichi Suzuki, Satoshi Inoue, Shovon M. D. Tanvir Hasan, Yusuke Hayashi, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    2016 COMPOUND SEMICONDUCTOR WEEK (CSW) INCLUDES 28TH INTERNATIONAL CONFERENCE ON INDIUM PHOSPHIDE & RELATED MATERIALS (IPRM) & 43RD INTERNATIONAL SYMPOSIUM ON COMPOUND SEMICONDUCTORS (ISCS)   2016

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  • Waveguide Optical-to-THz Signal Converter using Ringshaped Microstripline

    Satoshi Yamasaki, Akio Yasui, Tomohiro Amemiya, Kentaro Furusawa, Shinsuke Hara, Issei Watanabe, Norihiko Sekine, Nobuhiko Nishiyama, Akifumi Kasamatsu, Shigehisa Arai

    2016 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)   2016

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  • High Asymmetric Light Output Characteristics of Membrane Distributed-Reflector Laser on Si Substrate Reviewed

    Takuo Hiratani, Daisuke Inoue, Takahiro Tomiyasu, Kai Fukuda, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    2016 INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC)   2016

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  • Impedance Analysis of High-speed Lateral-current-injection Membrane DFB Laser on Silicon Reviewed

    Daisuke Inoue, Takuo Hiratani, Kai Fukuda, Takahiro Tomiyasu, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    2016 INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC)   2016

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  • 進展するプラズモニックデバイス―領域の拡大が続く―光回路のためのプラズモニックメタマテリアル

    雨宮智宏, 荒井滋久

    Optronics   34 ( 408 )   97 - 104   2015.12

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  • Monolithic Integration of Membrane-Based Butt-Jointed Built-in DFB Lasers and p-i-n Photodiodes Bonded on Si Substrate Reviewed

    Daisuke Inoue, Takuo Hiratani, Yuki Atsuji, Takahiro Tomiyasu, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS   21 ( 6 )   2015.11

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    DOI： 10.1109/JSTQE.2015.2435898

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  • Energy Cost Analysis of Membrane Distributed-Reflector Lasers for On-Chip Optical Interconnects Reviewed

    Takuo Hiratani, Takahiko Shindo, Kyohei Doi, Yuki Atsuji, Daisuke Inoue, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS   21 ( 6 )   2015.11

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    DOI： 10.1109/JSTQE.2015.2456334

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  • Room-temperature continuous-wave operation of membrane distributed-reflector laser Reviewed

    Takuo Hiratani, Daisuke Inoue, Takahiro Tomiyasu, Yuki Atsuji, Kai Fukuda, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    APPLIED PHYSICS EXPRESS   8 ( 11 )   2015.11

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    DOI： 10.7567/APEX.8.112701

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  • High-modulation efficiency operation of GaInAsP/InP membrane distributed feedback laser on Si substrate Reviewed

    Daisuke Inoue, Takuo Hiratani, Kai Fukuda, Takahiro Tomiyasu, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    OPTICS EXPRESS   23 ( 22 )   29024 - 29031   2015.11

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    DOI： 10.1364/OE.23.029024

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  • Optical transmission between III-V chips on Si using photonic wire bonding Reviewed

    Zhichen Gu, Tomohiro Amemiya, Atsushi Ishikawa, Takuo Hiratani, Junichi Suzuki, Nobuhiko Nishiyama, Takuo Tanaka, Shigehisa Arai

    OPTICS EXPRESS   23 ( 17 )   22394 - 22403   2015.8

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    DOI： 10.1364/OE.23.022394

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  • Low-threshold-current operation of membrane distributed-feedback laser with surface grating bonded on Si substrate Reviewed

    Yuki Atsuji, Kyohei Doi, Takuo Hiratani, Daisuke Inoue, Jieun Lee, Yuki Atsumi, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    JAPANESE JOURNAL OF APPLIED PHYSICS   54 ( 8 )   2015.8

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  • Investigation of Optical Interconnection by using Photonic Wire Bonding Reviewed

    ZhiChen Gu, Tomohiro Amemiya, Atsushi Ishikawa, Yuki Atsumi, JoonHyun Kang, Takuo Hiratani, Yusuke Hayashi, Junichi Suzuki, Nobuhiko Nishiyama, Takuo Tanaka, Shigehisa Arai

    JOURNAL OF LASER MICRO NANOENGINEERING   10 ( 2 )   148 - 153   2015.5

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  • Thermal properties of lateral-current-injection semiconductor membrane Fabry-Perot laser under continuous-wave operation Reviewed

    Takuo Hiratani, Kyohei Doi, Jieun Lee, Daisuke Inoue, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    JAPANESE JOURNAL OF APPLIED PHYSICS   54 ( 4 )   2015.4

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  • Design of apodized hydrogenated amorphous silicon grating couplers with metal mirrors for inter-layer signal coupling: Toward three-dimensional optical interconnection Reviewed

    Yuki Kuno, JoonHyun Kang, Yusuke Hayashi, Junichi Suzuki, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    JAPANESE JOURNAL OF APPLIED PHYSICS   54 ( 4 )   2015.4

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  • Permeability-controlled optical modulator with Tri-gate metamaterial: control of permeability on InP-based photonic integration platform Reviewed

    Tomohiro Amemiya, Atsushi Ishikawa, Toru Kanazawa, JoonHyung Kang, Nobuhiko Nishiyama, Yasuyuki Miyamoto, Takuo Tanaka, Shigehisa Arai

    SCIENTIFIC REPORTS   5   2015.3

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    DOI： 10.1038/srep08985

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  • Sub-milliampere threshold operation of butt-jointed built-in membrane DFB laser bonded on Si substrate Reviewed

    Daisuke Inoue, Jieun Lee, Takuo Hiratani, Yuki Atsuji, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    OPTICS EXPRESS   23 ( 6 )   7771 - 7778   2015.3

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    DOI： 10.1364/OE.23.007771

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  • Optical Lattice Model Toward Nonreciprocal Invisibility Cloaking Reviewed

    Tomohiro Amemiya, Masato Taki, Toru Kanazawa, Takuo Hiratani, Shigehisa Arai

    IEEE JOURNAL OF QUANTUM ELECTRONICS   51 ( 3 )   2015.3

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    DOI： 10.1109/JQE.2015.2389853

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  • Optical and Magnetic Microstructures in YIG Ferrite Fabricated by Femtosecond Laser Reviewed

    Atsushi Ishikawa, Tomohiro Amemiya, Yuya Shoji, Pham Nam Hai, Masaaki Tanaka, Tetsuya Mizumoto, Shigehisa Arai, Takuo Tanaka

    JOURNAL OF LASER MICRO NANOENGINEERING   10 ( 1 )   48 - 52   2015.2

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    DOI： 10.2961/jlmn.2015.01.0010

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  • Three-dimensional two-photon laser fabrication for metals, polymers, and magneto-optical materials

    Takuo Tanaka, Atsushi Ishikawa, Tomohiro Amemiya

    LASER 3D MANUFACTURING II   9353   2015

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    DOI： 10.1117/12.2086480

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  • GaInAsP/InP-based optical modulator consisting of gap-surface-plasmon-polariton waveguide: theoretical analysis Reviewed

    Tomohiro Amemiya, Eijun Murai, Zhichen Gu, Nobuhiko Nishiyama, Shigehisa Arai

    JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS   31 ( 11 )   2908 - 2913   2014.11

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    DOI： 10.1364/JOSAB.31.002908

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  • Surface assessment after removing III-V layer on III-V/silicon-on-insulator wafer fabricated by plasma activated bonding Reviewed

    Junichi Suzuki, Yusuke Hayashi, Yuki Kuno, JoonHyun Kang, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    JAPANESE JOURNAL OF APPLIED PHYSICS   53 ( 11 )   2014.11

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    DOI： 10.7567/JJAP.53.118003

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  • Amorphous-Silicon Inter-Layer Grating Couplers With Metal Mirrors Toward 3-D Interconnection Reviewed

    JoonHyun Kang, Yuki Atsumi, Yusuke Hayashi, Junichi Suzuki, Yuki Kuno, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS   20 ( 4 )   2014.7

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  • Room-temperature continuous-wave operation of GaInAsP/InP lateral-current-injection membrane laser bonded on Si substrate Reviewed

    Daisuke Inoue, Jieun Lee, Kyohei Doi, Takuo Hiratani, Yuki Atsuji, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    APPLIED PHYSICS EXPRESS   7 ( 7 )   2014.7

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  • Thermal Analysis of Lateral-Current-Injection Membrane Distributed Feedback Laser Reviewed

    Kyohei Doi, Takahiko Shindo, Jieun Lee, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE JOURNAL OF QUANTUM ELECTRONICS   50 ( 5 )   321 - 326   2014.5

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    DOI： 10.1109/JQE.2014.2309700

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  • 50 Gbps data transmission through amorphous silicon interlayer grating couplers with metal mirrors Reviewed

    Joon Hyun Kang, Yuki Atsumi, Yusuke Hayashi, Junichi Suzuki, Yuki Kuno, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    APPLIED PHYSICS EXPRESS   7 ( 3 )   2014.3

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    DOI： 10.7567/APEX.7.032202

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  • Three-dimensional nanostructuring in YIG ferrite with femtosecond laser Reviewed

    Tomohiro Amemiya, Atsushi Ishikawa, Yuya Shoji, Pham Nam Hai, Masaaki Tanaka, Tetsuya Mizumoto, Takuo Tanaka, Shigehisa Arai

    OPTICS LETTERS   39 ( 2 )   212 - 215   2014.1

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    DOI： 10.1364/OL.39.000212

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  • Three-dimensional nanostructuring in YIG ferrite with femtosecond laser

    Tomohiro Amemiya, Atsushi Ishikawa, Yuya Shoji, Pham Nam Hai, Masaaki Tanaka, Tetsuya Mizumoto, Takuo Tanaka, Shigehisa Arai

    Optics InfoBase Conference Papers   2014

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    DOI： 10.1364/cleo_si.2014.sth1j.5

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  • Three-dimensional Nanostructuring in YIG Ferrite with Femtosecond Laser Reviewed

    Tomohiro Amemiya, Atsushi Ishikawa, Yuya Shoji, Pham Nam Hai, Masaaki Tanaka, Tetsuya Mizumoto, Takuo Tanaka, Shigehisa Arai

    2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)   2014

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  • Electrode Position Dependence of Energy Cost in Lateral-Current-Injection Membrane Distributed Reflector Laser Reviewed

    Takuo Hiratani, Yuki Atsuji, Jieun Lee, Daisuke Inoue, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    2014 24TH IEEE INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC 2014)   111 - 112   2014

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    DOI： 10.1109/ISLC.2014.105

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  • GaInAsP/InP Lateral-Current-Injection Membrane DFB Laser Integrated with GaInAsP Waveguides on Si Substrate Reviewed

    Daisuke Inoue, Jieun Lee, Takuo Hiratani, Yuki Atsuji, Amemiya Tomohiro, Nobuhiko Nishiyama, Shigehisa Arai

    2014 24TH IEEE INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC 2014)   32 - 33   2014

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    DOI： 10.1109/ISLC.2014.106

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  • Light Propagation Properties of Si Waveguides after Removing III-V Layer on a III-V/SOI Wafer Fabricated by Plasma Activated Bonding

    Junichi Suzuki, Yusuke Hayashi, Yuki Kuno, JoonHyun Kang, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    2014 4TH IEEE INTERNATIONAL WORKSHOP ON LOW TEMPERATURE BONDING FOR 3D INTEGRATION (LTB-3D)   20 - 20   2014

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  • 10 Gbps Operation of Top Air-Clad Lateral Junction Waveguide-Type Photodiodes Reviewed

    Takahiko Shindo, Takayuki Koguchi, Mitsuaki Futami, Kyouhei Doi, Yoshiyuki Yamahara, Jieun Lee, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    JAPANESE JOURNAL OF APPLIED PHYSICS   52 ( 11 )   2013.11

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    DOI： 10.7567/JJAP.52.118002

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  • 10 Gbps Operation of Top Air-Clad Lateral Junction Waveguide-Type Photodiodes

    Takahiko Shindo, Takayuki Koguchi, Mitsuaki Futami, Kyouhei Doi, Yoshiyuki Yamahara, Jieun Lee, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    JAPANESE JOURNAL OF APPLIED PHYSICS   52 ( 11 )   2013.11

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    DOI： 10.7567/JJAP.52.118002

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  • Design of Lateral-Current-Injection-Type Membrane Distributed-Feedback Lasers for On-Chip Optical Interconnections Reviewed

    Takahiko Shindo, Mitsuaki Futami, Kyohei Doi, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS   19 ( 4 )   2013.7

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    DOI： 10.1109/JSTQE.2013.2244573

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  • Lateral-Current-Injection Type Membrane DFB Laser With Surface Grating Reviewed

    Takahiko Shindo, Mitsuaki Futami, Tadashi Okumura, Ryo Osabe, Takayuki Koguchi, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE PHOTONICS TECHNOLOGY LETTERS   25 ( 13 )   1282 - 1285   2013.7

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    DOI： 10.1109/LPT.2013.2261980

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  • Design and Characterization of AlGaInAs/InP Buried Heterostructure Transistor Lasers Emitting at 1.3-mu m Wavelength Reviewed

    Noriaki Sato, Mizuki Shirao, Takashi Sato, Masashi Yukinari, Nobuhiko Nishiyama, Tomohiro Amemiya, Shigehisa Arai

    IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS   19 ( 4 )   2013.7

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    DOI： 10.1109/JSTQE.2013.2250490

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  • Lateral-Current-Injection Type Membrane DFB Laser With Surface Grating

    Takahiko Shindo, Mitsuaki Futami, Tadashi Okumura, Ryo Osabe, Takayuki Koguchi, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE PHOTONICS TECHNOLOGY LETTERS   25 ( 13 )   1282 - 1285   2013.7

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    DOI： 10.1109/LPT.2013.2261980

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  • Room-Temperature Continuous-Wave Operation of npn-AlGaInAs Transistor Laser Emitting at 1.3-mu m Wavelength Reviewed

    Noriaki Sato, Mizuki Shirao, Takashi Sato, Masashi Yukinari, Nobuhiko Nishiyama, Tomohiro Amemiya, Shigehisa Arai

    IEEE PHOTONICS TECHNOLOGY LETTERS   25 ( 8 )   728 - 730   2013.4

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    DOI： 10.1109/LPT.2013.2249508

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  • Multi-stacked silicon wire waveguides and couplers toward 3D optical interconnects

    J. Kang, N. Nishiyama, Y. Atsumi, T. Amemiya, S. Arai

    OPTOELECTRONIC INTERCONNECTS XIII   8630   2013

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    DOI： 10.1117/12.2009456

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  • Layer-to-Layer Grating Coupler Based on Hydrogenated Amorphous Silicon for Three-Dimensional Optical Circuits Reviewed

    Joonhyun Kang, Yuki Atsumi, Manabu Oda, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    JAPANESE JOURNAL OF APPLIED PHYSICS   51 ( 12 )   120203   2012.12

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    DOI： 10.1143/JJAP.51.120203

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  • Carrier-concentration-dependent resonance frequency shift in a metamaterial loaded semiconductor Reviewed

    Seiji Myoga, Tomohiro Amemiya, Atsushi Ishikawa, Nobuhiko Nishiyama, Takuo Tanaka, Shigehisa Arai

    JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS   29 ( 8 )   2110 - 2115   2012.8

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    DOI： 10.1364/JOSAB.29.002110

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  • Improved Regrowth Interface of AlGaInAs/InP-Buried-Heterostructure Lasers by In-Situ Thermal Cleaning Reviewed

    Yuta Takino, Mizuki Shirao, Noriaki Sato, Takashi Sato, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE JOURNAL OF QUANTUM ELECTRONICS   48 ( 8 )   971 - 979   2012.8

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    DOI： 10.1109/JQE.2012.2196410

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  • Permeability retrieval in InP-based waveguide optical device combined with metamaterial Reviewed

    Tomohiro Amemiya, Seiji Myoga, Takahiko Shindo, Eijun Murai, Nobuhiko Nishiyama, Shigehisa Arai

    OPTICS LETTERS   37 ( 12 )   2301 - 2303   2012.6

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    DOI： 10.1364/OL.37.002301

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  • GaInAsP/InP Lateral Current Injection Laser With Uniformly Distributed Quantum-Well Structure Reviewed

    Mitsuaki Futami, Takahiko Shindo, Takayuki Koguchi, Keisuke Shinno, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE PHOTONICS TECHNOLOGY LETTERS   24 ( 11 )   888 - 890   2012.6

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    DOI： 10.1109/LPT.2012.2190053

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  • Carrier-Transport-Limited Modulation Bandwidth in Distributed Reflector Lasers With Wirelike Active Regions Reviewed

    Daisuke Takahashi, SeungHun Lee, Mizuki Shirao, Takahiko Shindo, Keisuke Shinno, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE JOURNAL OF QUANTUM ELECTRONICS   48 ( 5 )   688 - 695   2012.5

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    DOI： 10.1109/JQE.2012.2190822

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  • Room-Temperature Continuous-Wave Operation of a 1.3-mu m npn-AlGaInAs/InP Transistor Laser Reviewed

    Noriaki Sato, Mizuki Shirao, Takashi Sato, Masashi Yukinari, Nobuhiko Nishiyama, Tomohiro Amemiya, Shigehisa Arai

    2012 23RD IEEE INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC)   18 - +   2012

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  • Modulation Bandwidth of GaInAsP/InP Lateral-Current-Injection Membrane Laser Reviewed

    Takahiko Shindo, Mitsuaki Futami, Kyohei Doi, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    2012 23RD IEEE INTERNATIONAL SEMICONDUCTOR LASER CONFERENCE (ISLC)   106 - +   2012

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  • Low-Loss Amorphous Silicon Multilayer Waveguides Vertically Stacked on Silicon-on-Insulator Substrate Reviewed

    JoonHyun Kang, Yuki Atsumi, Manabu Oda, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    JAPANESE JOURNAL OF APPLIED PHYSICS   50 ( 12 )   120208   2011.12

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    DOI： 10.1143/JJAP.50.120208

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  • Low-Power-Consumption High-Eye-Margin 10-Gb/s Operation by GaInAsP/InP Distributed Reflector Lasers With Wirelike Active Regions Reviewed

    SeungHun Lee, Daisuke Takahashi, Takahiko Shindo, Keisuke Shinno, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE PHOTONICS TECHNOLOGY LETTERS   23 ( 18 )   1349 - 1351   2011.9

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    DOI： 10.1109/LPT.2011.2160938

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  • Lateral-Current-Injection Distributed Feedback Laser With Surface Grating Structure Reviewed

    Takahiko Shindo, Tadashi Okumura, Hitomi Ito, Takayuki Koguchi, Daisuke Takahashi, Yuki Atsumi, Joonhyun Kang, Ryo Osabe, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS   17 ( 5 )   1175 - 1182   2011.9

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    DOI： 10.1109/JSTQE.2011.2131636

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  • Regrowth Interface Quality Dependence on Thermal Cleaning of AlGaInAs/InP Buried-Heterostructure Lasers Reviewed

    Yuta Takino, Mizuki Shirao, Takashi Sato, Nobuhiko Nishiyama, Tomohiro Amemiya, Shigehisa Arai

    JAPANESE JOURNAL OF APPLIED PHYSICS   50 ( 7 )   2011.7

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    DOI： 10.1143/JJAP.50.070203

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  • Nonunity permeability in metamaterial-based GaInAsP/InP multimode interferometers

    T. Amemiya, T. Shindo, D. Takahashi, S. Myoga, N. Nishiyama, S. Arai

    OPTICS LETTERS   36 ( 12 )   2327 - 2329   2011.6

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    DOI： 10.1364/OL.36.002327

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  • Magnetic Interactions at Optical Frequencies in an InP-Based Waveguide Device with Metamaterial Reviewed

    Tomohiro Amemiya, Takahiko Shindo, Daisuke Takahashi, Nobuhiko Nishiyama, Shigehisa Arai

    IEEE JOURNAL OF QUANTUM ELECTRONICS   47 ( 5 )   736 - 744   2011.5

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    DOI： 10.1109/JQE.2011.2108268

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    Other Link： https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23760305/

  • Lateral Junction Waveguide-Type Photodiode Grown on Semi-Insulating InP Substrate Reviewed

    Tadashi Okumura, Daisuke Kondo, Hitomi Ito, SeungHun Lee, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    JAPANESE JOURNAL OF APPLIED PHYSICS   50 ( 2 )   2011.2

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    DOI： 10.1143/JJAP.50.020206

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  • GaInAsP/InP lateral-current-injection distributed feedback laser with a-Si surface grating Reviewed

    Takahiko Shindo, Tadashi Okumura, Hitomi Ito, Takayuki Koguchi, Daisuke Takahashi, Yuki Atsumi, Joonhyun Kang, Ryo Osabe, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    OPTICS EXPRESS   19 ( 3 )   1884 - 1891   2011.1

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    DOI： 10.1364/OE.19.001884

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    Other Link： https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23760305/

  • Lateral Current Injection Laser with Uniformly Distributed Quantum-Well Structure

    Takahiko Shindo, Mitsuaki Futami, Ryo Osabe, Takayuki Koguchi, Tomohiro Amemiya, Nobuhiko Nishiyama, Shigehisa Arai

    2011 IEEE PHOTONICS CONFERENCE (PHO)   678 - +   2011

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  • Nonreciprocal Polarization Conversion in Asymmetric Magnetooptic Waveguide Reviewed

    Tomohiro Amemiya, Kenji Abe, Takuo Tanemura, Tetsuya Mizumoto, Yoshiaki Nakano

    IEEE JOURNAL OF QUANTUM ELECTRONICS   46 ( 11 )   1662 - 1669   2010.11

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    DOI： 10.1109/JQE.2010.2058093

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  • TM MODE WAVEGUIDE ISOLATOR MONOLITHICALLY INTEGRATED WITH InP ACTIVE DEVICES

    Gengo Takahashi, Tomohiro Amemiya, Takuo Tanemura, Akio Higo, Koji Takeda, Yoshiaki Nakano

    2010 22ND INTERNATIONAL CONFERENCE ON INDIUM PHOSPHIDE AND RELATED MATERIALS (IPRM)   2010

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  • Nonreciprocal Polarization Converter Consisting of Asymmetric Waveguide With Magnetooptic Cladding: Theory and Simulation Reviewed

    Tomohiro Amemiya, Takuo Tanemura, Yoshiaki Nakano

    IEEE JOURNAL OF QUANTUM ELECTRONICS   45 ( 7 )   769 - 776   2009.7

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    DOI： 10.1109/JQE.2009.2013123

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  • Semiconductor waveguide optical isolator incorporating ferromagnetic epitaxial MnSb for high temperature operation Reviewed

    Tomohiro Amemiya, Yusuke Ogawa, Hiromasa Shimizu, Hiro Munekata, Yoshiaki Nakano

    APPLIED PHYSICS EXPRESS   1 ( 2 )   2008.2

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    DOI： 10.1143/APEX.1.022002

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  • 1.54-mu m TM-mode waveguide optical isolator based on the nonreciprocal-loss phenomenon: device design to reduce insertion loss

    T. Amemiya, H. Shimizu, M. Yokoyama, P. N. Hai, M. Tanaka, Y. Nakano

    APPLIED OPTICS   46 ( 23 )   5784 - 5791   2007.8

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    DOI： 10.1364/AO.46.005784

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  • Nonreciprocal propagation of light without external magnetic fields in a semiconductor waveguide isolator with a MnAs layer

    T. Amemiya, H. Shimizu, P. N. Hai, M. Tanaka, Y. Nakano

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   310 ( 2 )   2161 - 2163   2007.3

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    DOI： 10.1016/j.jmmm.2006.11.039

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  • Waveguide-based 1.5 mu m optical isolator based on magneto-optic effect in ferromagnetic MnAs Reviewed

    Tomohiro Amemiya, Hiromasa Shimizu, Pham Nam Hai, Masafumi Yokoyama, Masaaki Tanaka, Yoshiaki Nakano

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS   46 ( 1 )   205 - 210   2007.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1143/JJAP.46.205

    Web of Science

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  • Semiconductor waveguide optical isolator based on nonreciprocal loss induced by ferromagnetic MnAs

    T. Amemiya, H. Shimizu, Y. Nakano, P. N. Hai, M. Yokoyama, M. Tanaka

    APPLIED PHYSICS LETTERS   89 ( 2 )   2006.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1063/1.2220016

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  • High temperature ferromagnetism in GaAs-Based heterostructures with Mn delta doping (vol 95, art no 017201, 2005)

    AM Nazmul, T Amemiya, Y Shuto, S Sugahara, M Tanaka

    PHYSICAL REVIEW LETTERS   96 ( 14 )   2006.4

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  • High temperature ferromagnetism in GaAs-based heterostructures with Mn delta doping

    AM Nazmul, T Amemiya, Y Shuto, S Sugahara, M Tanaka

    PHYSICAL REVIEW LETTERS   95 ( 1 )   2005.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1103/PhysRevLett.95.017201

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Books

  • 透明マントを求めて 天狗の隠れ蓑からメタマテリアルまで (DISCOVER SCIENCE)

    雨宮智宏（ Role： Sole author）

    ディスカヴァー・トゥエンティワン  2014.6  （ ISBN:9784799315026 ）

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    Total pages：240  

    ASIN

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  • Single Mode Operation of 1.5-μm Waveguide Optical Isolators Based on the Nonreciprocal-loss Phenomenon

    IN-TECH, Austria  2010  （ ISBN:9789537619763 ）

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  • InP-based waveguide optical isolators for photonic integrated circuits

    Nova Publisher, New York  2008 

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Presentations

  • Fabrication, magnetic properties, and device application of InAlAs:MnAs granular material

    The 14th International Conference on Molecular Beam Epitaxy (MBE-2006)  2006 

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  • Demonstration of Semiconductor Waveguide Optical Isolator Monolithically Integrated Distributed Feedback Laser Diodes

    The 4th International Conference on Physics and Applications of Spin Related Phenomena in Semiconductors (PASPS-4)  2006 

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  • TM-Mode Semiconductor Active Waveguide Optical Isolators based on the Nonreciprocal Loss induced by an epitaxially grown ferromagnetic MnAs

    25th Electronic Materials Symposium (EMS 2006)  2006 

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    Presentation type：Poster presentation  

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  • High Temperature Operation of a Hybrid Optical Isolator with Ferromagnetic MnSb

    12th Physics and Applications of Spin-related Phenomena in Semiconductors (PASPS-12)  2007 

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  • TM mode optical waveguide isolator with 8.8 dB/mm nonreciprocal propagation induced by ferromagnetic MnAs

    Optical Fiber Communication Conference, 2006 and the 2006 National Fiber Optic Engineers Conference (OFC/NFOEC-2006)  2006 

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  • Monolithically Integrable Semiconductor Waveguide Optical Isolators using III-V Semiconductor / Ferromagnet Hybrid Structures

    64th Device Research Conference (DRC 2006)  2006 

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  • Optical waveguide isolator based on nonreciprocal loss shift induced by ferromagnetic MnAs

    The 17th International Conference on Magnetism (ICM-2006)  2006 

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  • 1.54-μm-band, TM-mode waveguide optical isolator that uses nonreciprocal loss induced by ferromagnetic MnSb

    53rd Annual Conference on Magnetism and Magnetic Materials (MMM-2008)  2008 

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  • Single mode operation of 1.5 μm TM-mode waveguide optical isolators based on the nonreciprocal-loss phenomenon

    Conference on Laser and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS-2007)  2007 

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  • Preparation and characterization of MnSb thin films for spin-photonics devices

    The 34th International Symposium on Compound Semiconductors (ISCS-2007)  2007 

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    Presentation type：Poster presentation  

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  • High temperature operation of TM-mode nonreciprocal-loss waveguide optical isolator with ferromagnetic MnSb

    20th Annual Meeting of the IEEE Lasers and Electro-Optics Society (LEOS-2007)  2007 

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  • Phase modulator with InGaAs/InAlAs FACQW grown by MOVPE

    The Opto-Electronics and Communication Conference (OECC-2008)  2008 

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  • Nonreciprocal polarization converter consisting of asymmetric waveguide with ferrimagnetic Ce:YIG

    8th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD-2008)  2008 

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  • Lateral Junction Waveguide Type Photodiode for Membrane Photonic Circuits

    International Conference on Indium Phosphide and Related Materials  2010 

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  • Si/III-V Hybrid Optical Devices and Related Technologies

    2010 

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  • Simple and compact InP polarization converter for polarization-multiplexed photonic integrated circuits

    22nd Annual Meeting of the IEEE Photonics Society (PHO-2009)  2009 

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  • Left-handed Light Controlling Device for Optical Frequency

    International Symposium on Quantum Nanophotonics and Nanoelectronics (ISQNN-2009)  2009 

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  • All-optical Switch Consisting of Multimode Interferometer Combined with Metamaterials: Device Design

    The 22nd International Conference on Indium Phosphide and Related Materials (IPRM-2010)  2010 

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    Presentation type：Poster presentation  

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  • TM-Mode Waveguide Isolator Monolithically Integrated with InP Active Devices

    The 22nd International Conference on Indium Phosphide and Related Materials (IPRM-2010)  2010 

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  • TM-mode nonreciprocal-loss waveguide optical isolator with ferromagnetic MnX (X=As, Sb) materials

    Conference on Laser and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS-2008)  2008 

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  • TM mode waveguide optical isolator based on the nonreciprocal loss shift

    The 17th International Conference on Indium Phosphide and Related Materials (IPRM-2005)  2005 

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    Presentation type：Poster presentation  

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  • External Control of Ferromagnetism in Mn delta-doped GaAs-based Heterostructures

    9th Joint MMM-Intermag Conference (MMM-2004)  2004 

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  • Mn delta-doped GaAs/p-AlGaAs Heterostructures with High Curie Temperature and Its Control

    The 13th International Conference on Molecular Beam Epitaxy (MBE-2004)  2004 

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Industrial property rights

Awards

  • 令和4年度 SCOPE研究開発奨励賞

    2022  

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  • 「東工大の星」 特別賞

    2022  

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  • 矢崎学術賞（奨励賞）

    2016  

    雨宮 智宏

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  • 文部科学大臣表彰 若手科学者賞

    2016  

    雨宮 智宏

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  • 東京工業大学 挑戦的研究賞

    2014  

    雨宮 智宏

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  • ディスカヴァー・トゥエンティワン賞

    2013  

    雨宮 智宏

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  • コニカミノルタ画像科学奨励賞（優秀賞）

    2013  

    雨宮 智宏

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  • 東京工業大学 工学系若手奨励賞

    2012  

    雨宮 智宏

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  • 電子情報通信学会 フォトニックネットワーク研究会 若手研究賞

    2010  

    雨宮 智宏

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  • IEEE/LEOS Graduate Student Fellowships

    2008  

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  • IEEE Photonics Conference Student Paper Award

    2007  

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  • LEOS Annual Student Paper Award

    2007  

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  • 電子情報通信学会 光エレクトロニクス研究会 学生優秀研究賞

    2006  

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    Country：Japan

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Research Projects

  • 可視域における全方位型の光学迷彩の実現

    Grant number：22H01520  2022.4 - 2025.3

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    雨宮 智宏

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    Grant amount：\17810000 （ Direct Cost: \13700000 、 Indirect Cost：\4110000 ）

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  • 可視域における全方位型の光学迷彩の実現

    Grant number：23K22790  2022.4 - 2025.3

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    雨宮 智宏

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    Grant amount：\17810000 （ Direct Cost: \13700000 、 Indirect Cost：\4110000 ）

    本年度は，CADで設計した形状と実際の形状の差異を抑制するために，形状近接効果補正を導入した。具体的には，電子ビーム描画装置のショットピッチ単位で形状補正を行った様々なCADパターンを用意し，それらを用いて作製プロセスを実施し各種形状データを集めた。実際に最適化された補正パターンを用いることで，角の丸まりが一定レベルで抑えられた金属細線が得られることを確認することに成功した。メタマテリアルフィルム作製には，従来の2次元平面内にメタマテリアルを配置する手法を用いた。ホスト材料には，可視全域に対して高い透明性を有するノルボルネン系のポリイミドを用いた。まず，支持基板上にポリイミドの前駆体であるポリアミド酸（N-メチル-2-ピロリドンで希釈）を塗布し，熱処理により硬化させた。次に，電子ビーム描画およびリフトオフプロセスを用いて，金属から構成されるメタマテリアルを2次元的に形成した後，再度，ポリアミド酸を塗布・硬化させてメタマテリアルを埋め込み，反応性イオンエッチングによりポリイミドの膜厚を調整した。その後，電子ビーム描画装置の位置合わせ露光を用いることで，上記プロセスを繰り返し，井桁構造のメタマテリアルを作製した。最後に，支持基板から剥離を行ったメタマテリアルフィルムを，直径50 μmのタングステンワイヤとともにスライドガラスに挟んで滑走させることで巻きつけを行った。金属パターンの上部に前述のメタマテリアルフィルムを巻いたタングステンワイヤを配置し，ハイパースペクトルイメージングにより動作波長近傍について画像化した。この時，動作波長の730 nm近傍において，巻きつけられたメタマテリアルフィルムが不可視化に寄与し，タングステンワイヤ下部のパターンが観測することに成功した。

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  • Broadband near-infrared/visible optical cloaking

    Grant number：19H02193  2019.4 - 2022.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    Amemiya Tomohiro

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    Grant amount：\14950000 （ Direct Cost: \11500000 、 Indirect Cost：\3450000 ）

    In this study, we proposed a special metamaterial whose magnetic permeability can be precisely controlled at high frequencies. The proposed metamaterial was encapsulated in an organic thin film with a specific permittivity and permeability distribution, and then wrapped around an object to realize optical cloaking in the visible range.

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  • Tabletop optical cloaking using metamaterial film

    Grant number：16H06082  2016.4 - 2020.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists (A)

    Amemiya Tomohiro

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    Grant amount：\25090000 （ Direct Cost: \19300000 、 Indirect Cost：\5790000 ）

    One of recently featured topics in applied optics is optical camouflage (invisibility cloak) realized by manipulating the spatial distribution of permeability and permittivity around an object, using metamaterials. To achieve the optical camouflage, it is needed to make a photonic metamaterial, a three-dimensional array of minute electromagnetic elements whose dimension and array pitch are smaller than the wavelength of light.
    For this purpose, we have developed a photonic metamaterial consisting of a two-dimensional minute metal-resonator array embedded in a flexible, transparent polymer film. A three-dimensional metamaterial can be made simply by stacking the films. In this paper, we propose and demonstrate a method of making a cloaking device simply by rolling this metamaterial film around an object that we want to hide.

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  • Creation of Ultra-low Power-consumption Semiconductor Membrane Photonic Integrated Circuits toward On-chip Optical Interconnections

    Grant number：15H05763  2015.5 - 2019.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (S)  Grant-in-Aid for Scientific Research (S)

    Arai Shigehisa

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    Grant amount：\199160000 （ Direct Cost: \153200000 、 Indirect Cost：\45960000 ）

    We investigated ultralow-power consumption photonics devices and their integrations aiming at optical interconnections in Si-LSI circuits since the power consumption in metal wires will be bottleneck of high-speed operation in future. As the results, we successfully realized semiconductor lasers based on semiconductor membrane structure of our proposal and demonstrated high-speed and ultralow-power consumption operation, i.e. almost an order of magnitude lower than that of semiconductor lasers used in optical fiber communications. Moreover, photodiodes based on the semiconductor membrane structure were realized and an integration with the membrane laser was also demonstrated.

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  • 半導体薄膜レーザの超低消費電力動作実現

    Grant number：15H02249  2015.4 - 2016.3

    日本学術振興会  科学研究費助成事業 基盤研究(A)  基盤研究(A)

    荒井 滋久, 雨宮 智宏

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    Grant amount：\17550000 （ Direct Cost: \13500000 、 Indirect Cost：\4050000 ）

    将来のLSI上にオンチップ光配線を実現する上で必要とされる、高速電気信号を光信号に変換できる超低電力動作半導体レーザを実現することを目的として行う研究であり、これまで申請代表者が提案・実現してきた薄膜（メンブレン）半導体レーザの極低電流動作および10Gbit/sを超える超高速変調の実現を目指した。
    この薄膜（メンブレン）半導体レーザだけでなく、信号を伝える低損失光導波路および高速光検出器も合わせて実現することを目的として申請した基盤研究(S)が採択されたため、本申請の基盤研究(A)は５月末で中断することとなった。

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  • InP-based waveguide optical modulator using the concept of metamaterials

    Grant number：25420321  2013.4 - 2015.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)  Grant-in-Aid for Scientific Research (C)

    TOMOHIRO Amemiya

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    Grant amount：\5200000 （ Direct Cost: \4000000 、 Indirect Cost：\1200000 ）

    Metamaterials promise ground-breaking new functionalities such as a negative index of refraction, invisibility, and imaging with super resolution. One new trend in this field is to think of metamaterials as devices in which the structure of the metal and the hybridization with functional agents bring new functionality. We report the experimental demonstration of a permeability-controlled waveguide optical modulator consisting of an InGaAsP/InP Mach-Zehnder interferometer with tri-gate metamaterial attached on its arms. The tri-gate metamaterial consists of metal resonator arrays and triple-gate field effect elements. Its permeability changes with changes in the gate bias voltage from 2 to 12 V, thereby changing the refractive index to switch the modulator with an extinction ratio of 6.9 dB at a wavelength of 1.55 um. The result shows the feasibility of InP-based photonic integrated devices that can produce new functions by controlling their permeability as well as their permittivity.

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  • Investigations of Lateral-current-injection Type Semiconductor Membrane Lasers toward On-chip Optical Interconnects

    Grant number：24246061  2012.4 - 2015.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)  Grant-in-Aid for Scientific Research (A)

    ARAI SHIGEHISA, AMEMIYA Tomohiro

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    Grant amount：\44980000 （ Direct Cost: \34600000 、 Indirect Cost：\10380000 ）

    With aiming at extremely low-power consumption operation lasers for on-chip optical interconnects in future LSIs, semiconductor membrane distributed-feedback lasers which enable extremely low threshold current operation and high-speed operation have been investigated.
    As the results, we theoretically clarified the capabilities of low-power consumption as well as high-speed modulation of the semiconductor menbrane lasers, and experimentally demonstated extremely low threshold current operation of semiconductor membrane distributed-feedback lasers and semiconductor membrane distributed-reflector lasers which have better performance in output efficiency. Moreover, by integrating semiconductor membrane photo-detector with the semiconductor membrane distributed-feedback laser via optical waveguide, we demonstrated, for the first time, a semiconductor membrane photonic-integrated-circuit (MPIC).

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  • Untra-compact photodetector based on plasmonic waveguide for optical wiring

    Grant number：24656046  2012.4 - 2014.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research  Grant-in-Aid for Challenging Exploratory Research

    ARAI Shigehisa, AMEMIYA Tomohiro

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    Grant amount：\3900000 （ Direct Cost: \3000000 、 Indirect Cost：\900000 ）

    Ultra-compact and high-speed waveguide type photodetector and optical modulator by introducing the concept of plasmonics into conventional semiconductor optical devices have been investigated for on-chip optical wiring.
    As for the photodetector using plasmonic waveguide, the coupling efficiency to 500-nm wide waveguide and the propagation loss were calculated by FEM (finite element method) analysis and the device structure was fabricated. As for the electro-absorption type plasmonic modulator, a mode analysis combining carrier density and FEM revealed that the moulation efficiency was 4.5 dB/ micronmeter which corresponds to 2-3 times better value than that previously reported for plasmonic modulators.

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  • InP-based optical memory with the concept of metamaterial

    Grant number：23760305  2011 - 2012

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)  Grant-in-Aid for Young Scientists (B)

    AMEMIYA Tomohiro

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    Grant amount：\4290000 （ Direct Cost: \3300000 、 Indirect Cost：\990000 ）

    Optical metamaterials offer new opportunities for innovation in the field of electromagnetic parameter design, such as the design of permittivity ε and permeability μ. The major focus of attention is to create artificial materials with unique ε-μ values that cannot be observed in any existing media and to take advantage of these expanded parameters for better control of electromagnetic waves. One of the next trends is to think of metamaterials as devices, where the structuring of metal and the hybridization with functional agents brings new functionality. Especially, introducing optical metamaterials into actual photonic devices poses an exciting challenge.In this study, we demonstrate InP-based optical devices combined with metamaterials to show the possibility of permeability control on the semiconductor-based photonics platform. As an actual example, we report an electrically-driven permeability-controlled optical switch, which shows great promise for using both the permittivity and permeability in semiconductor-based actual photonic devices.

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  • Meta-photonic Device~Possibility of Permeability Control in Semiconductor-based Photonic Device Combined with Metamaterial~

    Grant number：21860031  2009 - 2010

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Research Activity Start-up  Grant-in-Aid for Research Activity Start-up

    AMEMIYA Tomohiro

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    Grant amount：\2548000 （ Direct Cost: \1960000 、 Indirect Cost：\588000 ）

    We demonstrated InP-based optical multi-mode interferometers (MMI) combined with metamaterials. The MMI operated at optical-communication wavelength, 1.5-μm. The metamaterial consisted of minute split-ring resonators (SRRs) arrayed on the MMI. Magnetic resonance established between the SRR metamaterial and light at 1.5 μm, and the relative permeability of the metamaterial increased to 2.4 around this wavelength. Our results show the feasibility of semiconductor-based photonic devices combined with metamaterials. This would be useful in the development of novel optical-communication devices.

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  • 非相反損失を利用した導波路型光アイソレータの実現

    Grant number：07J04059  2007 - 2008

    日本学術振興会  科学研究費助成事業 特別研究員奨励費  特別研究員奨励費

    雨宮 智宏

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    Grant amount：\1800000 （ Direct Cost: \1800000 ）

    導波路型アイソレータは、他の導波路ベースの光素子(レーザ等)との一体化が容易であることから、次世代の光集積回路において必須なものの1つとされ、近年、各研究機関で盛んに取り上げられている。本研究では、磁気光学効果の一種である非相反損失を利用することによって、上記素子を開発することを目的としている。以下、研究の実施状況について概要を述べる。
    非相反損失とは、ある条件のもとで前進波と後退波の伝搬損失が互いに異なる現象である。これを利用してアイソレータ動作を得るために、半導体光増幅器の上部に強磁性金属を配置した素子を提案した。本素子の強磁性金属を一軸方向に磁化させておくことで、素子内の前進波と後進波の有効屈折率に違いが生じ、前進波の損失よりも後退波の損失が大きくなる(横磁気Kerr効果の影響による)。ここで、前進波の損失分を、半導体光増幅器で補うことにより、後退波に対してのみ損失を生じる(消光をもつ)素子を実現できる。
    これまでの研究から、1.5μm帯において適切な特性を得るためには、強磁性体であるMnX系材料(X=As,Bi,Sb)を使用することが適切であることが認められた。よって、本研究では強磁性金属としてMnAs,MnSbに焦点を当ててきた。実際には、(1)理論計算、(2)MOVPEによる半導体光増幅器の成長、(3)MBEによる化合物半導体上へのMnAs,MnSbエピタキシャル成長およびその薄膜評価、(4)素子の作製・測定という流れで研究を進めてきた。

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