Achievement

International Conferences

2023年 Report
[188] Yutaka Hoshiyama, Satoki Kawanishi, and Hiroyuki Tsuda, “Demonstration of 10 Gbps Packet Transmission in Si-Photonics-Based In-Vehicle Optical Network (SiPhON),” International Conference on Photonics in Switching and Computing 2023, Fr1B.4, Montova, Sept. 26-29, Italy (2023).
[187] Shumpei Kimura, Hiroyuki Tsuda, Takeshi Takagi, and Kazunori Mukasa “+30.8 dBm, IM-DD, 32 Gbit/s high power optical transmission with a 4-km photonic bandgap fiber,” International Conference on Photonics in Switching and Computing 2023, Fr2B.6, Montova, Sept. 26-29, Italy (2023).
[186] Hayato Sasazawa, Daisuke Nakagawa, and Hiroyuki Tsuda, “Novel coupling structure with an angled cut fiber and a tapered silicon waveguide suitable for surface mount large port count applications,” International Conference on Photonics in Switching and Computing 2023, PS19, Montova, Sept. 26-29, Italy (2023).
[185] Yuta Yagi, Yuta Takai, and Hiroyuki Tsuda, “An optical wavelength filter with reduced crosstalk consisting of a Si arrayed-waveguide grating and Bragg tunable grating filters,” International Conference on Photonics in Switching and Computing 2023, PS12, Montova, Sept. 26-29, Italy (2023).
[184] Hiroyuki Tsuda, Ryogo Kubo, Tatsuo Furuya, Yutaka Hoshiyama, Masayuki Iwase, Masahito Morimoto, Hisashi Kondo, Yasushi Amamiya, Yongwi Kim, Yoshiaki Nakano, Takuo Tanemura, Masayuki Murata, Shinichi Arakawa, Naokatsu Yamamoto, Atsushi Matsumoto, and Ryo Takahashi, “Proof of Principle Experiment on Si-Photonics-Based In-Vehicle Optical Network (SiPhON),” XXXVth URSI General Assembly and Scientific Symposium, D03-2, Sapporo, Aug19-26, Japan (2023).
2022年 Report
[183] Daisuke Nakagawa, and Hiroyuki Tsuda, “Optical Coupling Structure with a Silicon Photonics Chip using an Angled Multi-Core Fiber,” 27th Microoptics Conference 2022, 1043, Jena (hybrid), Sept. 25-28, Germany (2022).
[182] （招待講演）Hiroyuki Tsuda, “Highly reliable in-vehicle optical network for autonomous driving,” 2022 URSI-Japan Radio Science Meeting, D1-1, Tokyo, Sept. 1-2, Japan (2022).
[181] Yuta Yagi, and Hiroyuki Tsuda, “A low crosstalk optical wavelength filter consisting of a Si arrayed-waveguide grating and Bragg grating tunable filters,” The 15th Pacific Rim Conference on Lasers and Electro-Optics 2022, CWP12A-04, Sapporo, July 31-August 5, Japan (2022).
[180] Yuki Moriya, Fumi Nakamura, Kunio Kobayashi, Hitoshi Kawashima, Haoshuo Chen, and Hiroyuki Tsuda, “Design of a Hybrid Wavelength Selective Crossconnect Utilizing a Silicon Optical Switch Array,” International Conference on Photonics in Switching and Computing 2022, WC2-4, Toyama, July 3-6, Japan (2022).
[179] Hiroyuki Tsuda, Ryogo Kubo, Tatsuo Furuya, Masayuki Iwase, Masahito Morimoto, Hisashi Kondo, Yasushi Amamiya, Yoshiaki Nakano, Takuo Tanemura, Masayuki Murata, Shinichi Arakawa, Naokatsu Yamamoto, Atsushi Matsumoto, and Ryo Takahashi, “Proposal for a Highly Reliable In-Vehicle Optical Network: SiPhON (Si-Photonics-Based In-Vehicle Optical Network),” International Conference on Photonics in Switching and Computing 2022, TuP-F-2, Toyama, July 3-6, Japan (2022).
[178] Tatsuo Furuya, and Hiroyuki Tsuda, “Broadband Optical Packet Generation by Multiplexing Low- and High-Frequency Signals,” International Conference on Photonics in Switching and Computing 2022, ME1-4, Toyama, July 3-6, Japan (2022).
[177] Fumi Nakamura, Keijiro Suzuki, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima, and Hiroyuki Tsuda, “Design and Operation of Silicon Monolithic 1 × 4 Wavefront-control-type Wavelength Selective Switch,” CLEO 2022, JTh3B.13, San Jose, May 15-20, U. S. A, (2022).
2021年 Report
[176] Murat Can Sarihan, Kai-Chi Chang, Xiang Cheng, Hiroyuki Tsuda, Chee Wei Wong, “Proof-of-Principle Frequency-Bin Quantum Key Distribution with Biphoton Frequency Combs,” CLEO 2021, paper ATu1S.6, online, May 9-14, U. S. A, (2021).
2020年 Report
[175] X. Xue, F. Nakamura, K. Prifti, B. Pan, F. Yan, F. Wang, X. Guo, H. Tsuda, and N. Calabretta, "Experimental Assessments of a Flexible Optical Data Center Network Based on Integrated Wavelength Selective Switch," Optical Fiber Communication Conference (OFC) 2020, OSA Technical Digest (Optical Society of America, 2020), paper W1F.5, DOI: 10.1364/OFC.2020.W1F.5.
[174] Naoya Takahashi and Hiroyuki Tsuda, “Study of a demultiplexing scheme for mode multiplexed signals using neural network signal processing,” 2020 International Conference on Emerging Technologies for Communications Online, Virtual Conference, December 2-4, B1-2, (2020).
[173] Kenta Sakamoto, Masashi Kuwahara, Hiroyuki Tsuda, "Figure of merit of phase change materials for Mach-Zehnder interferometer-based and directional-coupler-based optical switches," Proc. SPIE 11276, Optical Components and Materials XVII, 1127604 (3 March 2020); DOI: 10.1117/12.2545700.
2019年 Report
[172] Shun Ishikura, Andrea Zirotti, and Hiroyuki Tsuda, “FMCW LiDAR Detection System Optimized for Reducing the Effect of Speckles on the Detector Aperture,” Photonics Device Workshop, p-(8), Dec. 5, Tokyo, Japan, (2019).
[171] Kenta Sakamoto, Masashi Kuwahara, Rie Endo and Hiroyuki Tsuda, “Effect of Se addition to Ge2Sb2Te5 on optical constants,” The Symposium on Phase Change Oriented Science (PCOS) 2019, P. 7, Nov. 28-29, Shizuoka, Japan, (2019).
[170] （招待講演）Hiroyuki Tsuda, “Progress on optical switch technology using phase change material,” The Symposium on Phase Change Oriented Science (PCOS) 2019, 1.4, Nov. 28-29, Shizuoka, Japan, (2019).
[169] Kunio Kobayashi, Hiroyuki Tsuda, “Design of a hybrid wavelength selective switch using silica and silicon waveguides,” 11184-14, Optoelectronic Devices and Integration III, Photonics Asia, Oct. 22, Hangzhou, China (2019).
[168] Akihisa Ohori, Hiroyuki Tsuda, “Large-scale wavelength multi/demultiplexer in combination with a spatial grating and arrayed waveguide gratings,” 11184-7, Optoelectronic Devices and Integration II, Photonics Asia, Oct. 22, Hangzhou, China (2019).
[167] Shun Ishikura, Andrea Zirotti, and Hiroyuki Tsuda, “Coherent LiDAR detection system optimized for reducing the effect of speckles on the detector aperture based on a dedicated simulation program.,” FiO + LS 2019 (Frontiers in Optics), JTu4A.129, September 17, Washington D.C., U.S., (2019). Report
[166] Fumi Nakamura, Hideaki Asakura, Keijiro Suzuki, Ken Tanizawa, Minoru Ohtsuka, Nobuyuki Yokoyama, Kazuyuki Matsumaro, Miyoshi Seki, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima, and Hiroyuki Tsuda, “Characteristics of 1×2 Silicon Wavelength Selective Switch Using Arrayed – Waveguide Gratings with Fold-Back Waveguides,” International Conference on Optical Communications and Networks(ICOCN) 2019, W2B.4, August 7, Huangshan, China, (2019).
[165] Katsutaka Sato and Hiroyuki Tsuda, “Multistage Silicon Wavelength Multi/Demultiplexer using an Arrayed-Waveguide Grating and Bragg Grating Filters,” OptoElectronics and Communications Conference/Photonics in Switching (OECC/PSC), TuF2-3, July 9, Fukuoka, Japan, (2019). Report
[164] Hayata Kobayashi and Hiroyuki Tsuda, “Spatial Mode Multiplexer for 42 Single Mode Fibers to the 7-Core, 6-Mode Fiber,” OptoElectronics and Communications Conference/Photonics in Switching (OECC/PSC), WP4-F3, July 10, Fukuoka, Japan, (2019). Report
2018 Report
[163] Hayata Kobayashi and Hiroyuki Tsuda, “Spatial Mode Multiplexer for 35 Single Mode Fibers to the 7-Core, 5-Mode Fiber,” International Conference on Photonics in Switching and Cumputing (PSC2018), Fr1A.3, Sept. 19, Limassol, Cypros, (2018). Report
[162] Katsutaka Sato and Hiroyuki Tsuda, “Low-Crosstalk Multistage Silicon Wavelength Multi/Demultiplexer,” International Conference on Photonics in Switching and Cumputing (PSC2018), Th4B.2, Sept. 19, Limassol, Cypros, (2018). Report
[161] Yudai Okuno, Koki Sugiyama, Tadashi Hajikano, Yasunori Tomomatsu, Katsumi Yoshizawa and Hiroyuki Tsuda, “Polarization Diversity Circuit Using Photonic Crystal Waveplates for 1.2-µm Quantum Dot Semiconductor Optical Amplifiers,” International Conference on Photonics in Switching and Cumputing (PSC2018), Th3B.4, Sept. 19, Limassol, Cypros, (2018). Report
[160] Ryogo Kubo, Takuto Fujimoto, Takahiro Shobudani, Yudai Okuno, Masaki Suzuki, Hiroyuki Tsuda, Makoto Sudo, Tadashi Hajikano, Yasunori Tomomatsu and Katsumi Yoshizawa, “T/O-band wavelength routing system using quantum dot semiconductor devices and 1081-channel AWG router,” The Optical Networking and Communication Conference & Exhibition (OFC 2018), Th3H.4, Mar. 15, San Diego, U. S. A., (2018).
2017 Report
[159] Fumi Nakamura, Kentaro Kato, Masashi Kuwahara, Hitoshi Kawashima, Tohru Tsuruoka, and Hiroyuki Tsuda, “Current driven optical gate switch using a Ge2Sb2Te5 thin film and an indium tin oxide heater,” The Symposium on Phase Change Oriented Science (PCOS) 2017, P.3, Nov. 16-17, Shizuoka, Japan, (2017).
[158] (invited)Hiroyuki Tsuda, Fumi Nakamura, Kentaro Kato, Masashi Kuwahara, Hitoshi Kawashima, and Tohru Tsuruoka, “Low-power consumption optical switches using phase-change material for a large capacity photonic network system,” The Symposium on Phase Change Oriented Science (PCOS) 2017, 1.3, Nov. 16-17, Shizuoka, Japan, (2017).
[157] Ryogo Kubo, Hiroyuki Tsuda, Makoto Sudo, Tadashi Hajikano, Yasunori Tomomatsu and Katsumi Yoshizawa, “Experimental Demonstration of 4K-UHD Video Transmission Using T-Band Wavelength Routing System for Passive Optical Local Area Networks,” The 43rd European Conference on Optical Communication (ECOC 2017), Th.2.B.4, Sept. 19, Gothenburg, Sweden, (2017).
[156] Yudai Okuno, Hideaki Shibutani, Katsumi Yoshizawa, Yasunori Tomomatsu and Hiroyuki Tsuda, “Wavelength-Selective External-Cavity Laser Using an Optical Switch Integrated Arrayed-Waveguide Grating for T-band Communications,” The 43rd European Conference on Optical Communication (ECOC 2017), P1.SC2.32, Sept. 19, Gothenburg, Sweden, (2017). Report
[155] Masaki Suzuki, Hiroyuki Tsuda, “Wideband, Transmission Flattened Arrayed Waveguide Grating Router for T-band and O-band Communication,” Integrated Photonics Research 2017, JTu4A.7, July 25, New Olreans, U. S. A., (2017). Report
[154] Fumi Nakamura, Keijiro Suzuki, Ken Tanizawa, Minoru Ohtsuka, Nobuyuki Yokoyama, Kazuyuki Matsumaro, Miyoshi Seki, Keiji Koshino, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima, Hiroyuki Tsuda, “1×2 Silicon Wavelength Selective Switch using Fold Back Arrayed-waveguide Gratings,” Photonics in Switching 2017, PTu3C.3, July 25, New Olreans, U. S. A., (2017) Report
[153] Yudai Okuno, Katsumi Yoshizawa, Yasunori Tomomatsu, Hiroyuki Tsuda, “Wavelength-Selective External Cavity Laser Using an InAs Quantum Dot Gain Chip and a Planar Lightwave Circuit for T-band WDM Communications,” CLEO/Europe-EQEC 2017, June 25 - 29, Munich, Germany, (2017). Report
[152] Fumi Nakamura, Keijiro Suzuki, Ken Tanizawa, Minoru Ohtsuka, Nobuyuki Yokoyama, Kazuyuki Matsumaro, Miyoshi Seki, Keiji Koshino, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima, Hiroyuki Tsuda, “1 × 2 Wavefront Control Type Wavelength-Selective Switch by Silicon Waveguides,” European Conference on Integrated Optics (ECIO) 2017, MP1.1, April 3, Eindhoven, the Netherlands, (2017). Report
2016 Report
[151] Shigeaki Sakai, Naotaka Iwamoto and Hiroyuki Tsuda, “Low-loss and low-crosstalk Si polarization splitters with two-step etching,” Frontier in Optics 2016, JTh2A.164, Oct. 20, Rochester, U. S. A., (2016). Report
[150] Takahiro Inaba, Ryutaro Eguchi and Hiroyuki Tsuda, “Focusing grating coupler for integration of a liquid-crystal spatial light modulator onto a Si photonic circuit,” Frontier in Optics 2016, JTh2A.148, Oct. 20, Rochester, U. S. A., (2016). Report
[149] Yudai Okuno, Yasunori Tomomatsu, Yoshinori Sawado, Katsumi Yoshizawa, Hideaki Shibutani and Hiroyuki Tsuda, “Wavelength Selective External Cavity Laser Using an InAs Quantum Dot Gain Chip and an Arrayed-Waveguide Grating for T-band Optical Communication,” Frontier in Optics 2016, FW5D.6, Oct. 19, Rochester, U. S. A., (2016). Report
[148] Fumi Nakamura, Kyosuke Muramatsu and Hiroyuki Tsuda, “Design of a Wavefront Control Type Compact Silicon Wavelength Selective Switch,” Frontier in Optics 2016, JW4A.144, Oct. 19, Rochester, U. S. A., (2016). Report
[147] Takahiro Inaba and Hiroyuki Tsuda, “Compact Si reflection type arrayed-waveguide grating with loopback mirrors,” 2016 IEEE Photonics Conference, 29th Annual Conference of the IEEE Photonics Society, WP51, Oct. 5, Hawaii, U. S. A., (2016). Report
[146] Hideaki Asakura, Koki Sugiyama, and Hiroyuki Tsuda, “Design of a 1x2 Wavelength Selective Switch Using an Arrayed-waveguide Grating with Fold-Back Paths on a Silicon Platform,” Optoelectronics and Communications Conference 2016, WA2-105, July3-7, Niigata, Japan (2016).
[145] Takahiro Inaba, Hiroyuki Tsuda, “Design of a Si Arrayed-waveguide Grating Using Distributed Bragg Reflectors,” Optoelectronics and Communications Conference 2016, WA2-92, July3-7, Niigata, Japan (2016).
[144] (invited) Hiroyuki Tsuda, “Large-scale arrayed-waveguide grating based photonic router using T- and O-band,” International Conference on Photonics (ICP2016), Mar. 14-16, Sarawak, Malaysia (2016).
[143] Koki Sugiyama, Takafumi Chiba, Takayuki Kawashima, Shojiro Kawakami, Hiroshi Takahashi, and Hiroyuki Tsuda, “Polarization diversity circuit for a silicon optical switch using silica waveguides integrated with photonic crystal thin film waveplates,” Photonics West 2016, OPTO, 9751-8, Feb. 17, San Francisco, U. S. A., (2016).
[142] Koji Anju, Hiroyuki Tsuda, and Hisato Uetsuka, “Design of a silicon polarization grating with a sub-wavelength anisotropic structure,” Photonics West 2016, OPTO, 9750-59, Feb. 17, San Francisco, U. S. A., (2016).
2015 Report
[141] (invited) Hiroyuki Tsuda, Kentaro Kato, Hitoshi Kawashima, and Masashi Kuwahara, “Compact optical switch using phase-change material and a Si lightwave circuit,” International Symposium on Optical Memory 2015, Mo-E-01, Oct. 4-7, Toyama (2015).
[140] Hideaki Asakura et al., “A 200-GHz Spacing, 17-Channel, 1x2 Wavelength Selective Switch using a Silicon Arrayed-Waveguide Grating with Loopback,” PS 2015, 22-26, September, 2015, Convitto delle Calza, Florence, Italy. (2015) Report
[139] Kyosuke Muramatsu et al., “A Wavefront Control Type Compact Silicon Wavelength Selective Switch,” PS 2015, 22-26, September, 2015, Convitto delle Calza, Florence, Italy. (2015)
[138] Kentaro Kato and Hiroyuki Tsuda, “Design of a Current-Driven Optical 2x2 Switch using Phase-Change Material,” PS 2015, 22-26, September, 2015, Convitto delle Calza, Florence, Italy. (2015)
[137] Kentaro Kato and Hiroyuki Tsuda, “Design of a Current-Driven Optical Gate Switch using a Si waveguide and Phase-Change Material,” CLEO-PR 2015, 24-28, August, 2015, BEXCO, Busan, Korea. (2015) Report
[136] Koki Sugiyama and Hiroyuki Tsuda, “Broadband 2x2 Multimode Interference Coupler for T- and O-band Communication by Wavefront Matching Method,” IPR 2015, 27 June - 1 July, 2015, Omni Parker house hotel, Boston, Massachusetts, USA. (2015) Report
[135] Kosuke Shibuya and Hiroyuki Tsuda, “Low-loss segmented joint structure between a slab waveguide and arrayed waveguides designed by simple optimization method,” SPIE Photonics West 2015, 7-12, February, The Moscone Center, San Francisco, California, United States. (2015) Report
[134] Shuhei Hayashi and Hiroyuki Tsuda, “Multi-functional optical signal processing using optical spectrum control circuit,”SPIE Photonics West 2015, 7-12, February, The Moscone Center, San Francisco, California, United States. (2015) Report
2014 Report
[133] Hisato Uetsuka, Masao Tachikura, Hitoshi Kawashima, Keisuke Sorimoto, Hiroyuki Tsuda, Keiichi Sasaki, Yuto Yamashita, “5×5 Wavelength Cross-connect Switch with Densely Integrated MEMS Mirrors,” Photonics in Switching 2014, PW2B.2, July 13-16, San Diego, U. S. A. (2014).
[132] Ryutaro Eguchi, and Hiroyuki Tsuda, “Design of a Grating Coupler Made of GeTe for Si Nanowire Waveguide,” Integrated Photonics Research, Silicon, and Nanophotonics 2014, JT3A.33, July 13-16, San Diego, U. S. A. (2014).
[131] Nazirul Afham bin Idris, Hideaki Asakura, and Hiroyuki Tsuda, “Extremely Wide-bandwidth Cyclic Arrayed Waveguide Grating for Waveband Routing on T-band and O-band,” Integrated Photonics Research, Silicon, and Nanophotonics 2014, JT3A.29, July 13-16, San Diego, U. S. A. (2014).
[130] Hideaki Asakura, and Hiroyuki Tsuda, ''Loss Uniformity Improvement of Arrayed-waveguide Grating Router using Interleaved Chirped Array,'' European Conference on Integrated Optics (ECIO 17th) and MicroOptics Conference (MOC 19th), P025, Nice, France, Jun. 24-27, (2014). Report
[129] Takumi Moriyama, Hitoshi Kawashima, Masashi Kuwahara, Xiaomin Wang, Hideaki Asakura, and Hiroyuki Tsuda, “Small-sized Mach-Zehnder Interferometer Optical SwitchUsing Thin Film Ge2Sb2Te5 Phase-change Material,” OFC2014, Tu3E.4, San Francisco, U. S. A., Mar 9-13, (2014). Report
2013 Report
[128] Yasuro Shimazaki, Masashi Kuwahara, Xiaomin Wang, Hiroyuki Tsuda, “Mach-Zehnder Interferometer Optical Switch Using Low-loss N-doped GeTe Thin Film,” The Symposium on Phase Change Optical Information Storage 2013, P08, Akiu, Japan, Nov. 28-29, (2013).
[127] Hiroyuki Tsuda, Takumi Moriyama, Paridhi Jain, Daiki Tanaka, Masashi Kuwahara, Xiaomin Wang, and Hitoshi Kawashima, “Compact optical switch using phase-change material for transparent photonic network,” The Symposium on Phase Change Optical Information Storage 2013, S22, Akiu, Japan, Nov. 28-29, (2013).
[126] H. Asakura, K. Nashimoto, D. Kudzuma, H. Kawashima, and H. Tsuda, “High-Speed, Hybrid Integrated, 1x2 Wavelength Selective Switch Using PLZT Optical Switches and Silica Planar Lightwave Circuits,” 18th Microoptics Conference (MOC2013), F4, Oct. 2 7-30, Tokyo, Japan, (2013) Report
[125] K. Sorimoto, H. Uetsuka, M. Tachikura, H. Kawashima, M. Mori, T. Hasama, H. Ishikawa, N. A. Idris, and H. Tsuda, “Compact 5 ×5 Wavelength-Selective Cross Connect Using Integrated 2-D MEMS Mirror Arrays,” 18th Microoptics Conference (MOC2013), F3, Oct. 27-30, Tokyo, Japan, (2013)
[124] N. A. Idris, K. Sorimoto, H.Uetsuka, H. Tsuda, "Silica planar lightwave circuit collimator with UV-cured resin as integrated multilayered lenses, " 18th Microoptics Conference (MOC2013), B6, Oct. 27-30, Tokyo, Japan, (2013). Report
[123] T. Yoshida, H. Asakura, T. Mizuno, H. Takahashi, and H. Tsuda, “Silica-Based 100-GHz-Spacing Integrated 40-λ 1×4 Waveleng th Selective Switch,” 39th European Conference and Exhibition on Optical Communication (ECOC) 2013, We.4.B.3, Sep. 22-26, L ondon, UK (2013)
[122] Takumi Moriyama, Daiki Tanaka, Paridhi Jain, and Hiroyuki Tsuda, "Low Crosstalk Design of an Optical Matrix Switch Using Phase-Change Material", Integrated Photonics Research, Silicon and Nano Photonics (IPR2013), IT4A.4, Rio Grande, Puerto Rico, July. 16 (2013). Report
[121] Takemasa Yoshida, Hideaki Asakura, Takayuki Mizuno, Hiroshi Takahashi, and Hiroyuki Tsuda, “Proposal for an Integrated 40-λ 1×4 Wavelength Selective Switch,” The 10th Conference on Lasers and Electro-Optics Pacific Rim(CLEO-PR 2013) & The 18th OptoElectronics and Communications Conference(OECC 2013)/Photonics in Switching 2013(PS 2013), ThL3-2, Kyoto, Japan, Jun. 30-Jul. 4, (2013). Report
[120] Hideaki Asakura, Keiichi Nashimoto, David Kudzuma, Masahiko Hashimoto, and Hiroyuki Tsuda, “Crosstalk Reduction of a PLZT Arrayed-Waveguide Grating by Phase Error Compensation,” The 10th Conference on Lasers and Electro-Optics Pacific Rim(CLEO-PR 2013) & The 18th OptoElectronics and Communications Conference(OECC 2013)/Photonics in Switching 2013(PS 2013), WO4-5, Kyoto, Japan, Jun. 30-Jul. 4, (2013). Report
[119] Tatsuhiko Ikeda, Takayuki Mizuno, Hiroshi Takahashi, and Hiroyuki Tsuda, “Optical spectrum control circuit with flat pass band characteristics using a high-resolution arrayed-waveguide grating,” Photonics West, OPTO, 8627-2, San Francisco, U. S. A., Feb. 2-7, (2013). Report
2012 Report
[118] (Invited) Hiroyuki Tsuda, “Photonic functional devices for an optical network node using arrayed-waveguide gratings,” Photonics Global Conference, 3-4E-4, Singapore (2012).
[117] Hiroyuki Tsuda, Daiki Tanaka, Masashi Kuwahara, Xiaomin Wang, and Hitoshi Kawashima, “Self-holding optical switch using phase-change material for energy efficient photonic network,” The 24th Symposium on Phase Change Oriented Science (PCOS 2012), A13, Hamamatsu, Japan, Nov. 30, (2012).
[116] P. Jain, D. Tanaka, H. Tsuda, M. Kuwahara, X. Wang, and H. Kawashima, “Mach Zehnder Interferometer Optical Switch Using Phase-Change Material,” The 24th Symposium on Phase Change Oriented Science (PCOS 2012), P6, Hamamatsu, Japan, Nov. 29, (2012).
[115] (Invited) Hiroyuki Tsuda, “Optical Switches for Future Photonic Network System Using Phase-Change Material and Si Waveguides,” International Symposium on Optical Memory 2012 (ISOM2012), Mo-E-01, Tokyo, Japan, Sep. 30-Oct. 4, (2012).
[114] Yuichiro Ikuma, Takayuki Mizuno, Hiroshi Takahashi, Tatsuhiko Ikeda, Hiroyuki Tsuda, “Low-loss Integrated 1x2 Gridless Wavelength Selective Switch With a Small Number of Waveguide Crossings,” European Conference and Exhibition on Optical Communication 2012, Tu.3.E.5, Amsterdam, Netherlands, Sep. 16-20, (2012).
[113] Hideaki Asakura, Hiroyuki Tsuda, Keiichi Nashimoto, David Kudzuma, Masahiko Hashimoto, “Error-free tunable channel selection using a PLZT arrayed-waveguide grating,” Photonics in Switching 2012, Fr-S36-O16, Ajaccio, France, Sep. 11-14, (2012). Report
[112] Paridhi Jain, Daiki Tanaka, and Hiroyuki Tsuda, “Mach Zehnder Interferometer Optical Switch Using Phase-Change Material,” Photonics in Switching 2012, Th-S4-P09, Ajaccio, France, Sep. 11-14, (2012).
[111] Daiki Tanaka, Yuichiro Ikuma, Hiroyuki Tsuda, Masashi Kuwahara, Hitoshi Kawashima, and Xiaomin Wang, “Ultracompact 2×2 Directional Coupling Optical Switch with Si Waveguides and Phase-Change Material,” Photonics in Switching 2012, We-S22-O03, Ajaccio, France, Sep. 11-14, (2012).
[110] J. Odori, T. Yoshida, K. Sorimoto, H. Iitsuka, H. Kawashima, and H. Tsuda, “Low Cross-talk Silica Arrayed-waveguide Grating for Visible Light Spectroscopy,” Integrated Photonics Research, Silicon and Nano Photonics (IPR2012), ITu3B.5, Colorado (USA), Jun. 19 (2012). Report
2011 Report
[109] （Invited）H. Tsuda, “Self-holding optical switch using phase-change material,” The 6th International Joint Workshop on OCDMA and OPS 2011, Tu.6, Dec.12-13, Okinawa, Japan (2011).
[108] T. Toyosaki, D. Tanaka，Y. Ikuma，Y. Shoji，M. Kuwahara，X. Wang，K. Kintaka， H. Kawashima, and H. Tsuda, “Repetitive Switching of Optical Gate Switch Using Phase-Change Material and Si Waveguide,” The Symposium on Phase Change Optical Information Storage (PCOS) 2011, Session 3 - No. 5, Atami, Japan, Nov. 18 (2011). Report
[107] （Invited）H. Tsuda, D. Tanaka, T. Toyosaki, Y. Ikuma, Y. Shoji, M. Kuwahara, X. Wang, K. Kintaka, H. Kawashima, “Small-sized self-holding optical switch using phase-change material,” 13th International Conference on Transparent Optical Networks (ICTON) 2011, Mo.B5.3, June 27- July 1, Stockholm, Sweden (2011). report
[106] K. Sorimoto, K. Kintaka, H. Kawashima, M. Mori, T. Hasama, H. Ishikawa, H. Tsuda, and H. Uetsuka, “1×6 Multicasting Operation in an LCOS-and-AWG-based Wavelength Selective Switch,” 1st International Symposium on Access Spaces (IEEE-ISAS 2011), GS3-B-3, Yokohama, Japan, Jun. 18 (2011). Report
[105] D. Tanaka, Y. Ikuma, Y. Shoji, M. Kuwahara, X. Wang, K. Kintaka, H. Kawashima, T. Toyosaki, and H. Tsuda, “Reversible Switching of an Optical Gate Based on Si Rib Waveguides with a Ge2Sb2Te5 Thin Film,” 1st International Symposium on Access Spaces (IEEE-ISAS 2011), GS3-B-2, Yokohama, Japan, Jun. 18 (2011).
[104] Y. Ikuma, T. Saiki, H. Tsuda, H. Kawashima, and K. Kintaka, “Feasibility investigation on 2x2 Optical Switch Using Silicon Waveguide and Phase-Change Material,” 1st International Symposium on Access Spaces (IEEE-ISAS 2011), GS3-B-1, Yokohama, Japan, Jun. 18 (2011).
[103] N. A. Idris, K. Sorimoto, D. Tanaka, and H. Tsuda, “Stripe-based Collimating Silica Planar Waveguide for a Free-space Wavelength Selective Cross Connect,” Integrated Photonics Research, Silicon and Nano Photonics (IPR2011), IWE6, Toronto, Canada, Jun. 15 (2011). Report
[102] T. Toyosaki, D. Tanaka, Y. Shoji, M. Kuwahara, X. Wang, K. Kintaka, H. Kawashima, Y. Ikuma and H. Tsuda, “Phase change characteristics of Ge2Sb2Te5 thin film for a self-holding optical gate switch,” Photonics West 2011, OPTO, Silicon Photonics IV, 7943-03, Jan. 23-26, San Jose, U. S. A. (2011). Report
2010 Report
[101] （Invited）H. Tsuda, “Ultra-Compact Optical Switch Using Phase-Change Material,” Asia Communications and Photonics Conference and Exhibition 2010, SE-3, Dec. 8-12, Shanghai, China(2010).
[100] D. Tanaka, Y. Ikuma, Y. Shoji, M. Kuwahara, X. Wang, K. Kintaka, H. Kawashima, T. Toyosaki and H. Tsuda, “Optical Gate Switch Using Phase-Change Material and Si Wire Waveguide,” The Symposium on Phase Change Optical Information Storage (PCOS 2010), 21, Nov. 25-26, Atami, Japan (2010). Report
[99] J. Odori and H. Tsuda, “Athermal and Polarization-Independent Waveguide Structure Using Silicone Resin,” 16th Microoptics Conference (MOC2010), WC3, Oct. 31-Nov. 3, Hsinchu, Taiwan, (2010). Report
[98] K. Kato, Y. Ikuma, H. Takahashi, T. Mizuno, and H. Tsuda, “Phase and Amplitude Spectrum Control Circuit Using an Arrayed-Waveguide Grating and Tunable Phase Shifters,” 16th Microoptics Conference (MOC2010), WP17, Oct. 31-Nov. 3, Hsinchu, Taiwan, (2010).
[97] X. Wang, M. Kuwahara, M. Fujimaki, H. Kawashima, H. Tsuda, Y. Ohki, “Fabrication of a grating with phase change material and its static optical switching performance,” 36th International Conference on Micro & Nano Engineering, P-NANO-120, Genoa, Italy, (2010).
[96] Y. Ikuma, T. Mizuno, H. Takahashi, and H. Tsuda, “Circulator-Free Reflection-Type Tunable Optical Dispersion Compensator Using Cascaded Arrayed- Waveguide Gratings,” 36th European Conference and Exhibition on Optical Communication (ECOC) 2010, We.8.E.7, Sep. 19-23, Torino, Italy (2010).
[95] D. Tanaka, Y. Ikuma, H. Tsuda, and K. Kintaka, “Comparative Simulation of Three Types of 3-dB Coupler Using a Si Wire Waveguide,” The International Conference on Communications and Electronics (ICCE) 2010, Microwave Engineering No. 25, August 11-13, Nha Trang, Vietnam (2010). Report
[94] Y. Ikuma, Y. Shoji, M. Kuwahara, X. Wang, K. Kintaka, H. Kawashima, D. Tanaka, and H. Tsuda, “Reversible Switching of an Optical Gate Using Phase-Change Material and Si waveguide,” Integrated Photonics Research, Silicon and Nano Photonics (IPR 2010) IWA6, July 25-28, Monterey, U. S. A. (2010).
[93] K. Sorimoto, H. Tsuda, H. Ishikawa, T. Hasama, H. Kawashima, K. Kintaka, M. Mori, and H. Uetsuka “Polarization Insensitive Wavelength Selective Switch Using LCOSs and Monolithically Integrated Multi-layered AWG,” 15th Optoelectronics and Communications Conference (OECC 2010),6E2-4, July 5-9, Sapporo, Japan (2010). Report
[92] D. Tanaka, Y. Shoji, K. Kintaka, H. Kawashima, Y. Ikuma, and H. Tsuda “Low-Crosstalk Offset Crossing Waveguide Fabricated on SOI Substrates,” 15th Optoelectronics and Communications Conference (OECC 2010),9E2-3, July 5-9, Sapporo, Japan (2010).
[91] （Invited）H. Tsuda, “Photonic functional devices for future communication systems,” 12th International Conference on Transparent Optical Networks (ICTON) 2010, Mo.D2.1, June 27- July 1, Munich, Germany (2010).
[90] K. Iwamoto, J. Odori, J. Ito, and H. Tsuda, “An athermal delay circuit using trenches filled with silicone resin,” 15th European Conference on Integrated Optics (ECIO 2010), WeB3, April 7-9, Cambridge, England (2010). Report
2009 Report
[89] K. Kato H. Takahashi, S. Fukushima, and H. Tsuda, “All-Order Waveguide-Type Dispersion Compensator Using Arrayed Waveguide Gratings,” Frontiers in Optics (FiO) 2009/Laser Science (LS) XXV conference, FThE4, October 11-15, San Jose, U. S. A.(2009). Report
[88] M. Hata D. Tanaka, and H. Tsuda, “Integrated Fresnel Lens Structure in a Si-Slab Waveguide,” Frontiers in Optics (FiO) 2009/Laser Science (LS) XXV conference, FWN4, October 11-15, San Jose, U. S. A.(2009).
[87] K. Sorimoto, H. Tsuda, H. Ishikawa, T. Hasama, H. Kawashima, K. Kintaka, M. Mori, and H. Uetsuka, “Demonstration of a Wavelength Selective Switch Using an LCOS and a Stacked Arrayed Waveguide Grating,” 35th European Conference and Exhibition on Optical Communication (ECOC) 2009, P. 2.04, Sep. 20-24, Vienna, Austria, (2009). Report
[86] Y. Ikuma, H. Tsuda, H. Takahashi, and S. Fukushima, “Tunable Optical Dispersion Compensator Module Using Integrated Multiple Lenses in an Arrayed-Waveguide Grating,” 35th European Conference and Exhibition on Optical Communication (ECOC) 2009, 7.2.6, Sep. 20-24, Vienna, Austria, (2009).
[85] D. Tanaka, Y. Ikuma and H. Tsuda, “Polarization Independent, Low Loss, Low Crosstalk Si Wire Waveguide Crossing,” Integrated Photonics and Nanophotonics Research and Applications (IPNRA) 2009, JTuB10, July 12-17, Honolulu, U. S. A.(2009). Report
[84] （Invited）H. Tsuda, “Photonic signal processing using arrayed-waveguide gratings,” 11th International Conference on Transparent Optical Networks (ICTON) 2009, We.A2.3, June 28- July 2, Island of São Miguel, Azores, Portugal (2009). Report
[83] D. Tanaka, Y. Ikuma and H. Tsuda, “Low Loss, Small Crosstalk Offset Crossing Structure of Si Wire Waveguide,” IEEE/LEOS Winter Topicals Meeting 2009, MA4.5, Jan. 12, Innsbruck, Austria (2009). Report
2008 Report
[82] （Invited）H. Tsuda, “Self-holding optical switches using phase-change material for future photonic network nodes,” 20th Phase Change Optical Information Storage (PCOS 2008), 10, Dec. 4-5, Shuzenji, Japan (2008).
[81] Y. Ikuma and H. Tsuda, “AWG-based tunable optical dispersion compensator using integrated thermooptic phase shifters,” International Topical Meeting on Information Photonics (IP2008), 3-P10, Nov. 16-20, Hyogo, Japan (2008). Report
[80] K. Sorimoto, H. Tsuda, H. Ishikawa, T. Hasama, H. Kawashima, K. Kintaka, M. Mori, H. Uetsuka, “Design of a wavelength selective switch using an LCOS and a multi-stacked AWG fabricated on wedge-shaped substrates,” International Topical Meeting on Information Photonics (IP2008), 3-P4, Nov. 16-20, Hyogo, Japan (2008).
[79] K. Sorimoto, H. Tsuda, H. Ishikawa, T. Hasama, H. Kawashima, K. Kintaka, M. Mori, H. Uetsuka, “A Compact High-Port-Count Wavelength Selective Switch Using LCOSs and a Multi-Stacked AWG,” The 21st Annual Meeting of the IEEE Lasers & Electro-Optics Society 2008, TuCC2, Nov. 11, Newport Beach, USA, (2008). Report
[78] K. Iwamoto, J. Ito, and H. Tsuda, “Design of an athermal optical waveguide using trenches filled with low-refractive index material,” 14th Microoptics Conference (MOC2008), P-55, Sep. 25-27, Brussels, Belgium, (2008). Report
[77] Y. Ikuma and H. Tsuda, “Tunable Optical Dispersion Compensator Using Integrated Lens-Shaped Phase Shifters in an Arrayed-Waveguide Grating,” 34th European Conference and Exhibition on Optical Communication (ECOC) 2008, P. 2.19, Sep. 21-25, Brussels, Belgium, (2008). Report
[76] Y. Ikuma and H. Tsuda, “Tunable Optical Dispersion Compensator Using a Hybrid-Lens Structure in an Arrayed-Waveguide Grating,” Integrated Photonics and Nanophotonics Research and Applications (IPNRA) 2008, ITuA3, July 14-16, Boston, U. S. A., (2008). Report
[75] J. Ito, K. Iwamoto, and H. Tsuda, “Design of a Waveguide-Type Polarization Beam Splitter Incorporating Trenches Filled with Low-Refractive Index Material,” ECIO 2008 (14th European Conference on Integrated Optics), FrD3, June 11-13, Eindhoven, Netherland (2008). Report
[74] K. Kasahara, T. Tsuji, D. Ishii, Y. Arakawa, S. Okamoto, H. Tsuda, N. Yamanaka, and K. Nashimoto, “GMPLS-Based High-Speed Optical Slot Switching System Using PLZT Ultra-High Speed Optical Switch for HDTV Contents Delivery Network,” OFC/NFOEC2008(Optical Fiber Communication Conference and Exposition (OFC) and the National Fiber Optic Engineers Conference (NFOEC)), OMO4, Feb. 24-28, San Diego, U. S. A., (2008).
[73] （Invited）H. Tsuda, “High-speed photonic signal processing using planar lightwave circuits,” The 6th Asia Pacific Laser Symposium, Proceedings (APLS), 31Hp2, January 30 – February 1, Nagoya, Japan (2008).
[72] W. Adachi, D. Tanaka, and H. Tsuda, “Novel phase error compensation method for high-resolution arrayed waveguide gratings,” The 6th Asia Pacific Laser Symposium, Proceedings (APLS), 01Ga6, January 30 – February 1, Nagoya, Japan (2008).
[71] Y. Narita and H. Tsuda, “Proposal and Analysis of Novel Photonic Switches Using Multimode Interference Effect,” The 6th Asia Pacific Laser Symposium, Proceedings (APLS), 01Ga5, January 30 – February 1, Nagoya, Japan (2008).
[70] J. Ito, Y. Ikuma, K. Iwamoto, H. Tsuda, “Compact polarization beam splitter using trenches filled with low-refractive index material,” The 6th Asia Pacific Laser Symposium, Proceedings (APLS), 01Ga4, January 30 – February 1, Nagoya, Japan (2008).
2007 Report
[69] （Invited）H. Tsuda, “Proposal of an optical switch using phase-change material for future photonic network nodes,” PCOS2007 (The 19th Symposium on Phase Change Optical Information Strage), Proceedings, pp. 39-42, November 29-30, Atami, Japan (2007).
[68] Y. Tanaka, R. Kobe, S. Takeda, T. Shioda, T. Kurokawa, and H. Tsuda, “100-Gbps Optical Packets with 8-bit RZ Pulse Patterns Generated by an Optical Pulse Synthesizer,” ECOC2007 (33rd European Conference and Exhibition on Optical Communication), 4.3.3, September 16-20, Berlin, Germany (2007).
[67] Y. Ikuma, M. Yasumoto, D. Miyamoto, J. Ito, and H. Tsuda, “Small Helical Reflective Arrayed-Waveguide Grating with Integrated Loop Mirrors,” ECOC2007 (33rd European Conference and Exhibition on Optical Communication), P044, September 16-20, Berlin, Germany (2007). Report
[66] F. Ono, A. Komoro, H. Tsuda, H. Takeuchi, and T. Kurokawa, “Optical frequency comb generation using semiconductor optical modulators,” OECC/IOOC2007 (12th Optoelectronics and Communications Conference/ 16th Integrated Optics and Optical Fiber Communication), 13D3-5, July 9-13, Yokohama (2007). Report
[65] Y. Narita, M. Yasumoto, and H. Tsuda, “Novel 2x2 photonic switch based on multimode interference effect,” OECC/IOOC2007 (12th Optoelectronics and Communications Conference/ 16th Integrated Optics and Optical Fiber Communication), 12P-31, July 9-13, Yokohama (2007).
[64] （Invited）H. Tsuda, “PLZT photonic functional devices for future network systems,” OECC/IOOC2007 (12th Optoelectronics and Communications Conference/ 16th Integrated Optics and Optical Fiber Communication), 12E1-1, July 9-13, Yokohama (2007).
[63] J. Ito and H. Tsuda, “A compact arrayed-waveguide grating with a locally enhanced optical confinement structure using trenches filled with low-refractive index materials,” ECIO 2007 (13th European Conference on Integrated Optics), ThA6, April 25-27, Copenhagen, Denmark (2007). Report
[62] H. Tsuda, M. Yasumoto, J. Ito, D. Ritums, J. Dawley, D. Kudzuma, Y. Tanaka, and K. Nashimoto, “15 ns, high-speed wavelength tuning over 16 nm using electrically controllable PLZT arrayed waveguide grating,” OFC/NFOEC2007(Optical Fiber Communication Conference and Exposition (OFC) and the National Fiber Optic Engineers Conference (NFOEC)), March 25-30, Anaheim, U. S. A., PDP47, (2007)
[61] Y. Osada and H. Tsuda, “Self-holding Optical Switch Using Phase-change Material,” CPT2007 (10th International Symposium on Contemporary Photonics Technology), LM-17, January 10-12, Tokyo, (2007).
[60] Y. Ikuma and H. Tsuda, “Proposal of a Small Helical Reflective Arrayed Waveguide Grating,” CPT2007 (10th International Symposium on Contemporary Photonics Technology), LM-7, January 10-12, Tokyo, (2007).
[59] Y. Narita, M. Yasumoto, and H. Tsuda, “Proposal of Multimode Interference Photonic Switches with Parallel Electrodes in Multimode Waveguide Regions,” CPT2007 (10th International Symposium on Contemporary Photonics Technology), LM-5, January 10-12, Tokyo, (2007).
[58] T. Komada and H. Tsuda, “Polarization Beam Splitter using Subwavelength Grating Structures on the Silica Substrate,” CPT2007 (10th International Symposium on Contemporary Photonics Technology), LM-4, January 10-12, Tokyo, (2007).
2006 Report
[57] M. Yasumoto, T. Suzuki, H. Tsuda, M. Raj, D. Kudzuma, J. Dawley, D. Ritums, Y. Tanaka, M. LaBuda, and K. Nashimoto, “(Pb, La)(Zr, Ti)O3 Thin Film Arrayed Waveguide Grating,” LEOS 2006 Annual Meeting, ThDD 3, October 29 – November 2, Montreal, QC, Canada (2006). Report
[56] D. Miyamoto and H. Tsuda, “Spectral Phase Encoder Using an Arrayed-Waveguide Grating with Phase-Adjustable Structures,” PS2006 (International Conference on Photonics in Switching 2006), O16.2, October 16-18, Herakleion (Crete), Greece (2006).
[55] J. Ito, T. Suzuki, T. Fan, A. Tate, and H. Tsuda, “Compact arrayed-waveguide grating using low-refractive index material filled trenches,” OECC2006 (The 11th Optoelectronics and Communications Conference), 5B2-2, July 3-7, Kaohsiung, Taiwan., (2006). Report
[54] T. Y. Fan, J. Ito, T. Suzuki, and H. Tsuda, “Compact arrayed-waveguide grating using air trench and high mesa structures,” IPRA2006 (Integrated Photonics Research and Applications Topical Meeting), IMB3, April 24-26, Uncasville, Connecticut, U. S. A., (2006). Report
[53] J. Ito, T. Suzuki, A. Tate, and H. Tsuda, “Proposal of silica waveguide buried with a low-refractive index material for compact planar lightwave circuits,” CPT2006 (9th International Symposium on Contemporary Photonics Technology), PDP-3, January 11-13, Tokyo, (2006).
2005 Report
[52] M. Yasumoto, T. Suzuki, A. Tate, K. Masuda, and H. Tsuda, “Wavefront compensation lens system in an arrayed-waveguide grating for hybrid integration of a phase encoding mirror,” 2005 Frontiers in Optics/Laser Science conferences, FWE4, Tucson, U. S. A., Oct. 16-20, (2005). Report
[51] T. Komada, M. Ogawa, M. Hakamata, H. Tsuda, and N. Kitano, “Design and the Fabrication of a Multi-Level Phase Hologram Using Subwavelength-Scale Hole Array Structures,” 2005 Frontiers in Optics/Laser Science conferences, FWL2, Tucson, U. S. A., Oct. 16-20, (2005).
[50] H. Tsuda, and T. Kurokawa, “Analog and digital optical pulse synthesizers using arrayed-waveguide gratings for Tbit/s photonic signal processing,” ECOC2005 (31st European Conference on Optical Communication, Glasgow, England, Th1.5.5, Sept. 25-29, (2005).
[49] T. Suzuki, K. Masuda, H. Tsuda, R. Inohara, H. Takahashi, H. Ishikawa, Y. Abe, S. Kashimura, and H. Uetsuka, “Dispersion Compensation Experiments of 40 Gbit/s NRZ Signal Using Arrayed-Waveguide Grating Based Dispersion Compensator,” ECOC2005 (31st European Conference on Optical Communication, Glasgow, England, Th1.5.1, Sept. 25-29, (2005).
[48] T. Suzuki and H. Tsuda, “16ch, 100 GHz-spacing compact arrayed-waveguide grating using a double bending structure in each array waveguide,” IQEC/CLEO-PR 2005 (International Conference on Quantum Electronics 2005 and the Pacific Rim Conference on Lasers and Electro-Optics 2005), CTuK3-3, July 11-15, Tokyo, Japan, (2005). Report
[47] D. Miyamoto, K. Mandai, H. Tsuda, K. Aizawa and T. Kurokawa, “Arbitrary Waveform Optical Pulse Generation Using an Optical Pulse Synthesizer,” WFOPC2005 (Workshop on Fibers and Optical Passive Components), III-3, June 22-24, Palermo, Italy, (2005). Report
[46] T. Suzuki, K. Masuda, and H. Tsuda, “Dispersion Compensator Using a Compact Arrowhead Arrayed-Waveguide Grating,” IPRA2005 (Topical Meeting on Integrated Photonics Research and Applications), IMB3, April 11-13, San Diego, USA, (2005). Report
[45] K. Mandai, T. Suzuki, H. Tsuda , K. Aizawa and T. Kurokawa, “Whole C-band, repetition rate tunable optical pulse generation using a high-resolution arrayed-waveguide grating and an optical comb generator,” OFC/NFOEC2005 (Optical Fiber Communication Conference and Exposition (OFC) and the National Fiber Optic Engineers Conference (NFOEC)), OTuD4, March 6-11, Anaheim, USA, (2005). Report
[44] A. Tate, T. Suzuki, and H. Tsuda, “Multistage polymeric lens structure in silica-waveguides for photonic functional circuits,” Photonics West 2005, 5724-52, January 22-27, San Jose, USA, (2005). Report
[43] K. Masuda, A. Tate, M. Ishida, T. Suzuki, and H. Tsuda, “Beam steering type 1:4 optical switch with polymer thermo-optic phase shifters in a silica arrayed-waveguide,” Photonics West 2005, 5728-47, January 22-27, San Jose, USA, (2005).
[42] M. Ishida, A. Tate, K. Masuda, T. Suzuki, and H. Tsuda, “Organic prism deflector switch fabricated on a silica waveguide,” Photonics West 2005, 5728-48, January 22-27, San Jose, USA, (2005).
[41] T. Suzuki, K. Masuda, A. Tate and H. Tsuda, “25-GHz spacing, 8-ch compact arrowhead arrayed-waveguide grating using v-bend waveguides,” Photonics West 2005, 5728-49, January 22-27, San Jose, USA, (2005).
[40] D. Miyamoto, K. Mandai, H. Tsuda, K. Aizawa and T. Kurokawa, “Arbitrary Waveform Optical Pulse Generation Using an Arrayed Waveguide Grating,” CPT2005 (8th International Symposium on Contemporary Photonics Technology), PDP-3, January 14-16, Tokyo, (2005).
[39] M. Yasumoto, T. Suzuki, A. Tate, K. Masuda, and H. Tsuda, “Design of an arrayed-waveguide grating with wavefront compensation lenses in a slab waveguide for hybrid integration,” CPT2005 (8th International Symposium on Contemporary Photonics Technology), PDP-1, January 14-16, Tokyo, (2005). Report
2004 Report
[38] K. Mandai, T. Suzuki, H. Tsuda, T. Kurokawa, and T. Kawanishi, “Arbitrary optical short pulse generator using a high-resolution arrayed-waveguide grating,” MWP2004 (International Topical Meeting on Microwave Photonics), MC-20, October 4-6, Ogunquit, USA, (2004). Report
[37] T. Suzuki, K. Mandai, H. Tsuda, T. Kurokawa, and T. Kawanishi “Optical pulse generation by controlling the sidebands of the phase modulated light,” OECC/COIN2004 (9th Optoelectronics and Communications Conference/ 3rd International conference on Optical Internet, July 12-16, 16A1-1, Yokohama, Japan, (2004). Report
[36] M. Ishida, T. Suzuki and H. Tsuda, “180 degree-bend structures using a double elliptic mirror in a slab waveguide,” OECC/COIN2004 (9th Optoelectronics and Communications Conference/ 3rd International conference on Optical Internet, July 12-16, 13F1-4, Yokohama, Japan, (2004).
[35] M. Hakamata and H. Tsuda, “Design and fabrication of diffractive optical elements using the sub-wavelength scale pillar array structure,” IPR2004 (Topical Meeting on Integrated Photonics Research), IFD3, June30-July2, San Francisco, 2004. Report
[34] T. Suzuki, Y. Shibata, K. Masuda, and H. Tsuda, “Compact arrowhead arrayed waveguide grating using v-bend optical waveguides,” IPR2004 (Topical Meeting on Integrated Photonics Research), IFH2, June30-July2, San Francisco, 2004.
[33] M. Hakamata and H. Tsuda, “Diffractive optical elements using the sub-wavelength scale pillar array structure,” 5360-63, SPIE Photonics West 2004, January 24-29, San Jose, USA, (2004). Report
[32] A. Tate, T. Suzuki, Y. Shibata, and H. Tsuda, “Proposal of WDM multi/demultiplexer with deep grooves and parabolic mirrors,” CPT2004 (7th International Symposium on Contemporary Photonics Technology), PDP-1, January 14-16, Tokyo, (2004).
2003 Report
[31] T. Suzuki, Y. Shibata, and H. Tsuda, “Small v-bend optical silica-waveguide using an elliptic mirror for planar lightwave circuits,” MOC2003 (9th Microoptics Conference), H-20, October 29-31, Tokyo, 2003.
[30] （Invited）H. Tsuda, T. Nakahara, Y. Mizutani and T. Kuroda, “High-speed on-chip and inter-chip optical interconnect technology for Tbit/s communication,” the 87th OSA Annual Meeting, WI1, Tucson, U. S. A, Oct. 5-9, (2003).
[29] T. Suzuki, Y. Shibata, and H. Tsuda, “Design and the fabrication of the small v-bend optical waveguide using an elliptic mirror,” ECIO2003 (European 11th European Conference on Integrated Optics), ThP17, April 1-4, Prague Czech, 2003. Report
[28] R. Kitano, K. Ozono, M. Obara, and H. Tsuda, “Femtosecond laser ablation processing of x-cut LiNbO3 substrates for optical communication devices,” 4977A-57, SPIE Photonics West 2003, January 25-31, San Jose, U. S. A., 2003. Report
[27] Y. Itoh, K. Aizawa, Y. Tanaka, H. Tsuda, and T. Kurokawa, “Measurement of short optical pulse spectra using arrayed waveguide grating,” CPT (International Symposium on Contemporary Photonics Technology)2003, January 15-17, Tokyo, Japan, 2003.
2002 Report
[26] N. Sako, Y. Tanaka, T. Kurokawa, H. Tsuda, and M. Naganuma, “Distance measurement using intensity correlation of orthogonally polarized optical microwaves,” ODF 2002 (3rd international conference on optics-photonics design & fabrication), TP09, Oct 30 –Nov. 1, Tokyo, 2002.
[25] Y. Shibata, T. Suzuki, and H. Tsuda, “Novel N:N optical coupler configuration using a mirror in a slab waveguide,” ODF 2002 (3rd international conference on optics-photonics design & fabrication), TP03, Oct 30 –Nov. 1, Tokyo, 2002. Report
[24] T. Suzuki, Y. Shibata, and H. Tsuda, “Low loss design of a small V-bend optical waveguide using an elliptic mirror,” ODF 2002 (3rd international conference on optics-photonics design & fabrication), P18, Oct 30 –Nov. 1, Tokyo, 2002.
[23] （Invited） H. Tsuda, T. Nakahara, and T. Kurokawa, “High speed optical interconnections for the large-throughput chips using smart pixels,” ODF 2002 (3rd international conference on optics-photonics design & fabrication), TS05, Oct 30 –Nov. 1, Tokyo, 2002.
[22] H. Tsuda and T. Nakahara, “High-speed on-chip and chip-to-chip optical interconnection,” APCOM2002 (Asia-pacific conference on fundamental problems of opto- and microelectronics), 1-03, Vladivostok, Sep. 29- Oct. 4, 2002.
[21] T. Suzuki, Y. Shibata, and H. Tsuda, “Small V-bend optical waveguide using an elliptic mirror for miniaturizing planar lightwave circuits,” IPR 2002 (Integrated Photonics Research), IFG 4, July 17-19, Vancouver, 2002. Report
[20] Y. Tanaka, P. G. Chua, T. Kurokawa, H. Tsuda, M. Naganuma, and M. Takeda, “Reflectometry based on two-photon absorptionof a silicon avalanche photodiode,” OFS2002 (International Conference on Optical Fiber Sensors)
[19] （Invited）H. Tsuda, “Optical interconnects to the chip for Tbit/s communication,” Cool Chips V (An international symposium on low-power and high-speed chips)
2001 Report
[18] H. Tsuda, “Photonic encoding and decoding using optical orthogonal codes and angle-multiplexed holograms,” Optical Engineering for Sensing and Nanotechnology (ICOSN 2001), Tech. Digest pp. 198-201, June 6-8, Yokohama, 2001.
2000 Report
[17] （Invited）H. Tsuda and T. Kurokawa, “Smart pixels and their applications to optical interconnects,” International Symposium on Optics and Optoelectronic Inspection and Control: Techniques, Applications and Inspection, OEC06, Beijing, China, Nov. 8-10, 2000.
[16] H. Tsuda and T. Kurokawa, “Optical information processing using arrayed-waveguide gratings and its application to optical communication systems,” APCOM’2000 (Asia-Pacific Conference on fundamental problems of Opto- and Microelectronics), Vladivostok, Russia, Sep. 11-14, 2000.
[15] H. Takenouchi, H. Tsuda, T. Goh, A. Hirano, K. Yonenaga, T. Ishii, and K. Okamoto, “16-ch dispersion-slope compensator for 40 Gbit/s transmission systems using an AWG and a spatial filter,” ECOC (European Conference on Optical Communication)2000, 3.2.3.
[14] A. Hirano, K. Yonenaga, Y. Miyamoto, H. Takanouchi, H. Tsuda, and H. Toba, “640-Gbit/s(16 ch×42.7 Gbit/s) WDM L-band DSF transmission with 25-nm bandwidth slope compensator,” ECOC (European Conference on Optical Communication)2000, 10.1.2.
[13] T. Nakahara, H. Tsuda, K. Tateno, N. Ishihara, and C. Amano, “High-sensitivity 1-Gb/s CMOS receiver integrated with a III-V photodiode by wafer-bonding,” 2000 IEEE/LEOS Summer topical meetings, M. A. 3.2.
1999 Report
[12] （Invited）H. Tsuda, T. Sakamoto, M. Hikita, T. Nakahara, K. Tateno, T. Kagawa, C. Amano, and T. Kurokawa, “Hybrid-integrated smart pixels for MCM and board-level optical interconnects,” OC’99(Optics in Computing)OFA1-1.
[11] H. Tsuda, H. Takenouchi, T. Ishii, K. Okamoto, T. Goh, K. Sato, A. Hirano, T. Kurokawa, and C. Amano, “Photonic spectral encoder/decoder using an arrayed-waveguide grating for coherent optical code division multiplexing,” OFC’99(Optical Fiber Communication Conference)PD32.
1998 Report
[10] H. Tsuda, T. Kurokawa, K. Okamoto, T. Ishii, K. Naganuma, Y. Inoue, and H. Takenouchi, “Second- and third-order dispersion compensation using a high resolution arrayed-waveguide grating,” ECOC’98(European Conference on Optical Communication)WdC13.
1997 Report
[9] H. Tsuda, T. Kurokawa, K. Okamoto, K. Naganuma, Y. Inoue, M. Ishii, and H. Takenouchi, “Time-space conversion based optical signal processing using an arrayed-waveguide grating,” CLEO/PacificRim’97(The Pacific Rim Conference on Lasers and Electro-Optics)PD. 2.5.
1996 Report
[8] H. Tsuda, Y. Miyamoto, A. Sano, K. Kato, Y. Imai, and K. Hagimoto, “40 Gbit/s baseband-type optical receiver module using a waveguide photodetector and a GaAs MESFET distributed amplifier IC,” OECC’96(Optoelectronics and Communications Conference) 19A1-2.
[7] H. Tsuda, A. Hirano, R. Takahashi, K. Sato, and K. Hagimoto, “Photonic signal processingusing a novel high-speed saturable absorber optical gate,” PS’96(Photonics in Switching)PWD3.
1995 Report
[6] H. Tsuda, A. Hirano, R. Takahashi, K. Sato, K. Hagimoto, “3ps, 2.4Gbit/s all-optical pulse discrimination experiment,” ECOC’95(European Conference on Optical Communication)Th L 2.3.
1993 Report
[5] H. Tsuda, K. Nonaka, K. Hirabayashi, H. Uenohara, H. Iwamura, and T. Kurokawa, “2.1 GHz wavelength conversion over a 100 nm input range with a side-injection light controlled bistable laser diode,” IPR’93 (Integrated photonics research) PD2.
1992 Report
[4] H. Tsuda, T. Kurokawa, H. Uenohara, and H. Iwamura, “Time-division optical signal processing using an optical memory switch,” OEC’92 (Optoelectronics conference), 17A3-4.
1990 Report
[3] T. Kurokawa and H. Tsuda, “Nonlinear etalon triode devices for all-optical signal processing,” OEC’90 (OptoElectronics Conference) 12B4-5.
[2] H. Tsuda, Y. Sakai, and T. Kurokawa, “Optical flip-flops using two nonlinear etalons,” PS’90 (topical meeting on Photonic Switching) 13C-38.
1989 Report
[1] H. Tsuda, and T. Kurokawa, “Optical triode switch module with a nonlinear etalon,” MOC/GRIN'89 (Micro Optics Conference/ topical meeting on GRadient-INdex optical imaging systems) K2.