Achievement

International Conferences

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).
[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).
[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).
[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).
[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).
[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).
[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).
[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).
2016 Report
[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). Report
[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) Report
[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) Report
[137] Koki Sugiyama 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) Report
[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) Report
[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). Report
[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). Report
[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).
[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). Report
[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). Report
[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). Report
[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). Report
[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). Report
[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). Report
[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). Report
[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). Report
[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). Report
[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). Report
[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). Report
[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). Report
[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).
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). Report
[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. Report
[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. Report
[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.