Ryugaku Jinja · Professor Archive
Public Professor Archive
渡邉 俊夫渡邉 俊夫
Kagoshima University · Graduate School of Science and Engineering
- Publications
- 4
- Projects
- 3
- Keywords
- 6
留学
神社Kagoshima University · Graduate School of Science and Engineering
Research keywordsoptical switches・Mach-Zehnder interferometers・silicon photonics・mode multiplexers・directional couplers・crossbar optical switch
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- T. Watanabe, H. Nakamura, T. Nagayama, S. Fukushima . Perfect Crossbar Optical Switch with Imperfect Couplers . OECC/PSC 2025 - Technical Digest of the 30th OptoElectronics and Communi2025 · 担当区分： 筆頭著者 記述言語： 英語 掲載種別： 研究論文（国際会議プロシーディングス） 出版者・発行元： Opto Electronics and Communications Conference Oecc We propose a perfect crossbar optical switch based on cascaded Mach-Zehnder interferometers, which gives no crosstalk at both cross and bar states even if the power ratio of the couplers deviates from 50:50. DOI： 10.23919/OECC/PSC62146.2025.11110739 Scopus
- T. Watanabe, D. Ishio, T. Nagayama, S. Fukushima . 3-stage Mach-Zehnder Interferometer Optical Switch with Ripple-free Response . MOC 2025 - Technical Digest of the 30th Microoptics Co2025 · 担当区分： 筆頭著者 記述言語： 英語 掲載種別： 研究論文（国際会議プロシーディングス） 出版者・発行元： MOC 2025 Technical Digest of the 30th Microoptics Conference We address an optimal coupling ratio of 3-stage Mach-Zehnder interferometer optical switch, which gives ripple-free response as a function of applied phase between arms. DOI： 10.23919/MOC65514.2025.11269215 Scopus
- D. Kiritoshi, T. Watanabe, T. Nagayama, S. Fukushima . Coupling Characteristics of a Mode Multi/Demultiplexer with a Vertically Stacked Asymmetric Directional Coupler . OECC/PSC 2022 -2022 · 担当区分： 責任著者 記述言語： 英語 掲載種別： 研究論文（国際会議プロシーディングス） 出版者・発行元： OECC/PSC 2022 - 27th OptoElectronics and Communications Conference/International Conference on Photonics in Switching and Computing 2022 We show the coupling characteristics of a mode multi/demultiplexer (MUX/DEMUX) with a vertically stacked asymmetric directional coupler. Designed multilayer 4-mode MUX/DEMUX has higher coupling efficiency than the conventional in-plane mode MUX/DEMUX. DOI： 10.23919/OECC/PSC53152.2022.9849938 Scopus
- K. Sainohira, T. Watanabe, T. Nagayama, S. Fukushima . Truncated spot size converters for silicon photonic wire waveguides . OECC 2021 - Technical Digest of the 26th Optoelectronics an2021 · 担当区分： 責任著者 記述言語： 英語 掲載種別： 研究論文（国際会議プロシーディングス） 出版者・発行元： Optics InfoBase Conference Papers We examined light propagation along the spot size converter of silicon photonic wire waveguides, and show there are two maxima in coupling efficiency. An optimal design was given in terms of compactness and high efficiency by changing its dimension and shape. Scopus
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