Profile

Yohei AIKAWA ( Ph.D. in Engineering )

Assistant professor

Tokyo Institute of Technology, Laboratory for Future Interdisciplinary Research of Science and Technology

4259 Nagatsuta, Midori, Yokohama, Kanagawa 226-8503, Japan

Research Interests

Optical Signal Processing
Optical Communication Engineering
Communication Theory & Coding Theory

Academic & Professional Experience

Apr. 2022 - Today : Assistant professor, Tokyo Institute of Technology
Apr. 2017 - Mar. 2022 : Assistant professor, National Institute of Technology, Okinawa College
Apr. 2014 - Mar. 2017 : Doctor's course, Tokyo Institute of Technology
Apr. 2010 - Mar. 2014 : KDDI Research, Inc.

Published Papers

Yohei Aikawa and Hiroyuki Uenohara, "Optical Digital Decoder Consisting of 4×4 Multi-Mode Interferometer Coupler," Journal of Lightwave Technology, 42(22), pp.7929-7936, Jul 2024.
Yohei Aikawa and Hiroyuki Uenohara, "High-Contrast QPSK Pattern Recognition Device Consisting of a 4×4 MMI Coupler " Electronics Letters , 60(21), pp.1-4, Aug 2024.
Yohei Aikawa and Hiroyuki Uenohara, "All-optical 2-bit decoder based on a silicon waveguide device for BPSK-modulated signals," Optics Continuum, 3(4), pp.627-635, Apr 2024.
Yohei Aikawa and Hiroyuki Uenohara, "An optical digital‐to‐analog converter with a built‐in intensity converter consisting of silicon waveguide," IET Optoelectronics, 17(15), pp.214–219, Jul 2023.
Yohei AIKAWA, "Optical likelihood calculation for quadrature phase-shift keying signal based on silicon integrated waveguide," IET Optoelectronics, 16(4), pp.188–194, Jun 2022.
Yohei AIKAWA, "Integrated optical digital-to-analogue converter for a 2-bit BPSK-modulated signal based on a silicon photonics waveguide," Electronics Letters, 56(16), pp.830-832, Aug 2020.
Yohei AIKAWA and Hiroyuki UENOHARA, "Investigation for achievable net coding gain of optical FEC coding with convolutional code using optical XOR gates based on FWM in HNLF," IET Optoelectronics, 14(1), pp.22-29, Feb 2020.
Yohei AIKAWA, "Optical digital-to-analog conversion for 2-bit BPSK-modulated signal based on delay line interferometer with balanced photodetector," Electronics Letters, 55(21), pp.1139-1141, Oct 2019.
Yohei AIKAWA, "Ultracompact Optical Comparator for 4-bit QPSK-modulated Signal Based on Silicon Photonic Waveguide," IEEE Photonics Journal, 11(3), pp.1-11, Jun 2019.
Yohei AIKAWA, "Optical comparison operation for 8-Bit QPSK-modulated signal by using serially-cascaded delay line interferometer," Applied Sciences, 8(9), pp.1-8, Oct 2018.
Yohei AIKAWA, "Optical Comparator for 4-Bit and 6-Bit QPSK-Modulated Signals by Using Optical Delayed Interferometer," IEEE Photonics Journal, 10(2), pp.1-11, Apr 2018.
Yohei AIKAWA, "A Study on Optical Forward Error Correction Coding Scheme with Convolutional code," Tokyo Institute of Technology, Mar 2017.
Yohei AIKAWA and Hiroyuki UENOHARA, "Demonstration of Optical FEC Coding Scheme With Convolutional Code Consisting of a Signal Source," IEEE Photonics Technology Letters, 29(1), pp. 165-168, Jan 2017.
Yohei AIKAWA and Hiroyuki UENOHARA, "Proposal and analytical investigation of optical comparator for optical and electrical converted Viterbi-decoding scheme," Electronics Letters, 52(16), pp. 1397-1398, Aug 2016.
Yohei AIKAWA and Hiroyuki UENOHARA, "Numerical Investigation of All-Optical Forward-Error-Correction Coding Scheme With Convolutional Code," IEEE Photonics Journal, 8(2), pp.1-12, Apr 2016.
Hiroyuki UENOHARA and Yohei AIKAWA, "Bit rate adaptable operation of a hybrid integrated wavelength converter using a semiconductor optical amplifier type Mach-Zehnder interferometer," Optics Letters, 38(23), pp. 4982-4984, Dec 2013.
Yohei AIKAWA, Satoshi SHIMIZU, and Hiroyuki UENOHARA, "Demonstration of All-Optical Divider Circuit Using SOA-MZI-Type XOR Gate and Feedback Loop for Forward Error Detection," Journal of Lightwave Technology, 29(15), pp. 2259-2266, Aug 2011.

International Conferences

Zhang Rui, Yohei Aikawa and Hiroyuki Uenohara, "Performance Optimization of Optical Decoders Using Multimode Interferometers," The 30th Opto-Electronics and Communications Conference/Photonics in Switching and Computing 2025 (OECC/PSC 2025), Jun 2025.
Yohei Aikawa and Hiroyuki Uenohara, "Reconfigurable Optical Decoder and Half-adder Composed of Unitary Converter," The 30th Opto-Electronics and Communications Conference/Photonics in Switching and Computing 2025 (OECC/PSC 2025), Jun 2025.
Yohei Aikawa and Hiroyuki Uenohara, ",Steady-state characteristics of 2-bit Optical Decoder based on 44 Multi-mode Interferometer Coupler" The 29th Opto-Electronics and Communications Conference 2024 (OECC2024), Jun 2024.
Yohei Aikawa and Hiroyuki Uenohara, "2-bit Optical Decoder based on 4x4 Multi-mode Interferometer Coupler for BPSK-modulated signals," 2023 Photonics in Switching and Computing (PSC 2023), Sep 2023.
Yohei AIKAWA, "Integrated Optical Comparator for 2 successive QPSK-modulated Symbols Based on Silicon Photonic Waveguide (Invited Talk)," International Conference on Photonics Research (Interphotonics 2019), Dec 2019.
Yohei AIKAWA, "Optical Comparator for 4-Bit and 6-Bit QPSK-Modulated Signals by using Optical Delayed Interferometer," 31st Annual Conference of the IEEE Photonics Society (IPC 2018), Nov 2018.
Yohei AIKAWA, "Optical Comparator for PSK-modulated Signals by Using Serially-Cascaded Delay Line Interferometer (Invited talk)," International Conference on Photonics Research (Interphotonics 2018), Oct 2018.
Yohei AIKAWA and Hiroyuki UENOHARA, "Experimental demonstration of optical comparison operation with 4-bit QPSK modulated signals for optical and electrical converted viterbi decoding," 2017 INTERNATIONAL CONFERENCE ON PHOTONICS IN SWITCHING (PS), Jul 2017.
Yohei AIKAWA and Hiroyuki UENOHARA, "Experimental demonstration of all-optical FEC coding scheme with convolutional code using single signal source," European Conference on Optical Communication, ECOC 2016, 770-772, Sep 2016.
Yohei AIKAWA and Hiroyuki UENOHARA, "Experimental Demonstration of All-Optical FEC Coding Scheme with Convolutional Code," 21ST OPTOELECTRONICS AND COMMUNICATIONS CONFERENCE (OECC) HELD JOINTLY WITH 2016 INTERNATIONAL CONFERENCE ON PHOTONICS IN SWITCHING (PS), Jul 2016.
Yohei AIKAWA and Hiroyuki UENOHARA, "A proposal and analytical investigation of optical comparison-operation scheme for Viterbi decoding," Asia Communications and Photonics Conference, ACP 2015, Nov 2015.
Yohei AIKAWA and Hiroyuki UENOHARA, "Analytical Investigation of All-optical XOR Operation Based on FWM in HNLF with DPSK Modulated Signals," iNOW - International Nano-Optoelectronics Workshop Conference 2015, Aug 2015.
Yohei AIKAWA and Hiroyuki UENOHARA, "Analytical Investigation of All-Optical FEC Coding Scheme with Convolutional Code," 2015 INTERNATIONAL CONFERENCE ON PHOTONICS IN SWITCHING (PS), 259-261, Jul 2015.
Yohei AIKAWA, Yuichiro HEI, Tomohiko OGISHI,Sumaru NIIDA,Toru HASEGAWA, "Topology-Aware Clustering to Achieve Latency Comparable to One-Frame in Multiplayer Online Games," 2013 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC), 2288-2292, Sep 2013.
Hiroyuki UENOHARA and Yohei AIKAWA, "Hybrid Integrated Semiconductor Optical Amplifier-Mach Zehnder Interferometer (SOA-MZI)-type All-Optical Wavelength Converter with a Selectable Delay Time Push-Pull Configuration," The 17th OptoElectronics and Communications Conference (OECC2012), 817-818, Fec 2012.
Yohei AIKAWA, Satoshi SHIMIZU, and Hiroyuki UENOHARA, "Investigation of all-optical division processing using a SOA-MZI-based XOR gate for all-optical FEC with cyclic code," 2010 INTERNATIONAL CONFERENCE ON PHOTONICS IN SWITCHING (PS), Dec 2010.

Research Grants & Projects

Japan Science and Technology Agency, ACT-X: (Oct. 2023 - Mar. 2026)
The Telecommunications Advancement Foundation: "A study on optical decoder consisting of multi-mode interferometer coupler", (Apr. 2024 - Mar. 2025)
Tokyo Institute of Technology, Rising Star's Program: (Sep. 2023 - Mar. 2025)
Japan Society for the Promotion of Science (23K13676), Grants-in-Aid for Scientific Research: (Apr. 2023 - Mar. 2025)
Tokyo Institute of Technology, Suematsu Award “Fundamentals and Developments of Digital Technology": (Sep. 2022 - Aug. 2023)
Japan Society for the Promotion of Science (21K14557), Grants-in-Aid for Scientific Research: (Apr. 2021 - Mar. 2023)
The Murata Science Foundation: (Jun 2020 - Jun 2021)
The Matsuda Foundation: "A study on integrated optical comparator for future packet switching", (Oct. 2019 - Sep. 2020)
The Telecommunications Advancement Foundation: "A study on comparator by using optical signal processing", (Apr. 2019 - Mar. 2020)
TATEISHI SCIENCE AND TECHNOLOGY FUNDATION: (Apr. 2019 - Mar. 2020)
The Noguchi Instituite: (Apr. 2019 - Mar. 2020)
The Telecommunications Advancement Foundation: "A study on comparator by using optical signal processing", (Apr. 2018 - Mar. 2019)
THE ASAHI GLASS FOUNDATION: "A study on comparison operation by using optical signal processing", (Apr. 2018 - Mar. 2020)
Japan Society for the Promotion of Science: Grants-in-Aid for Scientific Research, (Apr. 2014 - Mar. 2017)

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