Toshikazu Hashimoto

38 papers Misc 2Journal 8Unranked 28

Year	Rank	Type	Title / Venue / Authors
2025	—	`conf`	Cross-λ Phase Diversity: A Simple Chromatic-Dispersion-Tolerant Direct-Detection Scheme. OFC Hiroshi Yamazaki, Masanori Nakamura, Josuke Ozaki, Yoshihiro Ogiso, Takayuki Kobayashi, Toshikazu Hashimoto, Yutaka Miyamoto
2025	J	`jnl`	Programmable Photonic Unitary Processor Enables Parametrized Differentiable Long-Haul Spatial Division Multiplexed Transmission. CoRR Mitsumasa Nakajima, Kohki Shibahara, Kohei Ikeda, Akira Kawai, Masaya Notomi, Yutaka Miyamoto, Toshikazu Hashimoto
2024	J	`jnl`	Training Spiking Neural Networks via Augmented Direct Feedback Alignment. CoRR Yongbo Zhang, Katsuma Inoue, Mitsumasa Nakajima, Toshikazu Hashimoto, Yasuo Kuniyoshi, Kohei Nakajima
2023	Misc	`conf`	Densely Parallelized Photonic Tensor Processor on Hybrid Waveguide/Free-Space-Optics. PSC Mitsumasa Nakajima, Kenji Tanaka, Katsuma Inoue, Kohei Nakajima, Toshikazu Hashimoto
2023	—	`conf`	Optical clock distribution over stable fiber links in noisy environments. OFC Tomoya Akatsuka, Hiromitsu Imai, Masao Takamoto, Ichiro Ushijima, Takashi Goh, Toshikazu Hashimoto, Hidetoshi Katori, Katsuya Oguri, Tetsuomi Sogawa
2022	J	`jnl`	Neural Schrödinger Equation: Physical Law as Deep Neural Network. IEEE Trans. Neural Networks Learn. Syst. Mitsumasa Nakajima, Kenji Tanaka, Toshikazu Hashimoto
2022	—	`conf`	Photonic Reservoir Computing on Coherent Linear Processor. OECC/PSC Mitsumasa Nakajima, Takuma Tsurugaya, Kenji Tanaka, Shinji Matsuo, Toshikazu Hashimoto
2022	J	`jnl`	Physical Deep Learning with Biologically Plausible Training Method. CoRR Mitsumasa Nakajima, Katsuma Inoue, Kenji Tanaka, Yasuo Kuniyoshi, Toshikazu Hashimoto, Kohei Nakajima
2022	—	`conf`	Silica-PLC based mode-dependent-loss equalizer for two LP mode transmission. OFC Takeshi Fujisawa, Takayoshi Mori, Junji Sakamoto, Yoko Yamashita, Taiji Sakamoto, Ryota Imada, Ryoto Ima, Takanori Sato, Kei Watanabe, Ryoichi Kasahara, Toshikazu Hashimoto, Kazuhide Nakajima, Kunimasa Saitoh
2020	—	`conf`	Automated Optical Waveguide Design Based on Wavefront Matching Method. OFC Toshikazu Hashimoto
2020	—	`conf`	Transmitter Bandwidth Extension using Optical Time-Interleaving Modulator and Digital Spectral Weaver. OFC Hiroshi Yamazaki, Masanori Nakamura, Takashi Goh, Toshikazu Hashimoto, Yutaka Miyamoto
2020	—	`conf`	Wavefront-Matching-Method-Designed Six-Mode-Exchanger Based on Grating-Like Waveguide on Silica-PLC Platform. OFC Takeshi Fujisawa, Taiji Sakamoto, Masashi Miyata, Takashi Matsui, Toshikazu Hashimoto, Ryoichi Kasahara, Kazuhide Nakajima, Kunimasa Saitoh
2019	—	`conf`	6×6 Wavelength Cross Connect with 2-f and 4-f Optical Systems for SDM Photonic Nodes. OECC/PSC Kazunori Serio, Akira Isoda, Takayuki Mizuno, Keita Yamaguchi, Kenya Suzuki, Toshikazu Hashimoto, Yutaka Miyamoto
2019	—	`conf`	Burst-Mode Optical-Clock-Pulse Generator with Enhanced Sensitivity. OECC/PSC Salah Ibrahim, Tatsushi Nakahara, Yusuke Muranaka, Toshikazu Hashimoto
2019	—	`conf`	Digital-Preprocessed Analog-Multiplexed DAC for High-Speed Optical Communications. OECC/PSC Hiroshi Yamazaki, Munehiko Nagatani, Hitoshi Wakita, Masanori Nakamura, Fukutaro Hamaoka, Takayuki Kobayashi, Yoshihiro Ogiso, Minoru Ida, Toshikazu Hashimoto, Hideyuki Nosaka, Yutaka Miyamoto
2019	—	`conf`	Investigation of All-Optical Wavelength Conversion with 2-Stage-Comb-Generated Pump for High Frequency Resolution. OECC/PSC Masashi Yamazaki, Kazunori Seno, Toshikazu Hashimoto, Hiroyuki Uenohara
2019	—	`conf`	Novel Lambda-Rich Data Center Network: From Underlying Principles to Candidate Technologies. OFC Salah Ibrahim, Toshikazu Hashimoto
2018	Misc	`conf`	A Novel Optoelectronic Parallel-to-Serial Converter for 100-Gbps Optical Packets. PSC Hiroshi Ishikawa, Salah Ibrahim, Tatsushi Nakahara, Hiroki Sugiyama, Toshikazu Hashimoto
2018	—	`conf`	Contention-Less Scheduling-Free Torus Optical Network Comprising Thousands of Nodes. ECOC Salah Ibrahim, Toshikazu Hashimoto, Satoshi Shigematsu
2018	—	`conf`	Integrated Wavelength Selective Switch Array for Space Division Multiplexed Network with Ultra-Low Inter-Spatial Channel Crosstalk. OFC Keita Yamaguchi, Kazunori Seno, Kenya Suzuki, Hiroki Kawahara, Mitsunori Fukutoku, Toshikazu Hashimoto, Yutaka Miyamoto
2018	—	`conf`	Over-100-Spatial-Channel Programmable Spectral Processor for SDM Signal Monitoring. OFC Mitsumasa Nakajima, Kenya Suzuki, Kazunori Seno, Takashi Goh, Ryoichi Kasahara, Mitsunori Fukutoku, Yutaka Miyamoto, Toshikazu Hashimoto
2018	—	`conf`	Transmission of 400-Gbps Discrete Multi-Tone Signal Using >100-GHz-Bandwidth Analog Multiplexer and InP Mach-Zehnder Modulator. ECOC Hiroshi Yamazaki, Munehiko Nagatani, Hitoshi Wakita, Yoshihiro Ogiso, Masanori Nakamura, Minoru Ida, Toshikazu Hashimoto, Hideyuki Nosaka, Yutaka Miyamoto
2018	—	`conf`	Wide-Passband C+L-Band Wavelength Selective Switch by Alternating Wave-Band Arrangement on LCOS. ECOC Kazunori Seno, Keita Yamaguchi, Kenya Suzuki, Toshikazu Hashimoto
2017	—	`conf`	Monolithically Integrated 4×4 Optical Switch with Cascaded MZIs and EAM-Gate Array. ECOC Yusuke Muranaka, Tatsushi Nakahara, Salah Ibrahim, Takuro Fujii, Toru Segawa, Toshikazu Hashimoto, Ryo Takahashi
2017	—	`conf`	SDM-compatible dynamic gain equalizer using spatial and planar optical circuit. OFC Mitsumasa Nakajima, Kenya Suzuki, Keita Yamaguchi, Hirotaka Ono, Hiroki Kawahara, Mitsunori Fukutoku, Takayuki Mizuno, Yutaka Miyamoto, Toshikazu Hashimoto
2017	—	`conf`	Ultra-Wideband Digital-to-Analog Conversion Technologies for Tbit/s channel transmission. ECOC Hiroshi Yamazaki, Munehiko Nagatani, Fukutaro Hamaoka, Shigeru Kanazawa, Hideyuki Nosaka, Toshikazu Hashimoto, Yutaka Miyamoto
2016	—	`conf`	56-Gbit/s 40-km optical-amplifier-less transmission with NRZ format using high-speed avalanche photodiodes. OFC Masahiro Nada, Takuya Hoshi, Shigeru Kanazawa, Toshikazu Hashimoto, Hideaki Matsuzaki
2016	—	`conf`	In-band OSNR monitors comprising programmable delay line interferometer integrated with wavelength selective switch by spatial and planar optical circuit. OFC Mitsumasa Nakajima, Naru Nemoto, Keita Yamaguchi, Joji Yamaguchi, Kenya Suzuki, Toshikazu Hashimoto
2016	J	`jnl`	Integrated Photonic Devices and Applications for 100GbE-and-Beyond Datacom. IEICE Trans. Electron. Yoshiyuki Doi, Takaharu Ohyama, Toshihide Yoshimatsu, Tetsuichiro Ohno, Yasuhiko Nakanishi, Shunichi Soma, Hiroshi Yamazaki, Manabu Oguma, Toshikazu Hashimoto, Hiroaki Sanjoh
2015	—	`conf`	160-Gbps Nyquist PAM4 transmitter using a digital-preprocessed analog-multiplexed DAC. ECOC Hiroshi Yamazaki, Munehiko Nagatani, Shigeru Kanazawa, Hideyuki Nosaka, Toshikazu Hashimoto, Akihide Sano, Yutaka Miyamoto
2015	—	`conf`	Generation of 448-Gbps OTDM-PDM-16QAM signal with an integrated modulator using orthogonal CSRZ pulses. OFC Hiroshi Yamazaki, Takashi Goh, Toshikazu Hashimoto, Akihide Sano, Yutaka Miyamoto
2015	—	`conf`	High-linearity avalanche photodiode for 40-km transmission with 28-Gbaud PAM4. OFC Masahiro Nada, Shigeru Kanazawa, Hiroshi Yamazaki, Yasuhiko Nakanishi, Wataru Kobayashi, Yoshiyuki Doi, Takaharu Ohyama, Tetsuichiro Ohno, Kiyoto Takahata, Toshikazu Hashimoto, Hideaki Matsuzaki
2015	—	`conf`	Identification of loss factors by evaluating backscattered modal loss ratio obtained with 1-µm-band mode-detection OTDR. OFC Atsushi Nakamura, Keiji Okamoto, Yusuke Koshikiya, Tetsuya Manabe, Manabu Oguma, Toshikazu Hashimoto, Mikitaka Itoh
2015	—	`conf`	Optical Nyquist-filtering multi/demultiplexer with PLC for 1-Tb/s class super-channel transceiver. OFC Takashi Goh, Mikitaka Itoh, Hiroshi Yamazaki, Takashi Saida, Toshikazu Hashimoto
2014	—	`conf`	400-G coherent receiver using silica-based heterogeneously-integrated PLC with newly developed waveplate type PBS. ECOC Yu Kurata, Yasuaki Hashizume, Shinichi Aozasa, Mikitaka Itoh, Toshikazu Hashimoto, Hiromasa Tanobe, Yasuhiko Nakanishi, Eiji Yoshida, Hiroyuki Fukuyama, Hiroshi Yamazaki, Takashi Goh, Haruki Yokoyama, Yoshifumi Muramoto
2010	J	`jnl`	Compact and Athermal DQPSK Demodulator with Silica-Based Planar Lightwave Circuit. IEICE Trans. Electron. Yusuke Nasu, Yohei Sakamaki, Kuninori Hattori, Shin Kamei, Toshikazu Hashimoto, Takashi Saida, Hiroshi Takahashi, Yasuyuki Inoue
2010	J	`jnl`	Reduction of phase-difference deviation in 90° optical hybrid over wide wavelength range. IEICE Electron. Express Yohei Sakamaki, Yusuke Nasu, Toshikazu Hashimoto, Kuninori Hattori, Takashi Saida, Hiroshi Takahashi
2007	J	`jnl`	Loss reduction of silica-based 8 × 8 optical matrix switch by optimizing waveguide crossings using WFM method. IEICE Electron. Express Yohei Sakamaki, Shunichi Sohma, Takashi Saida, Toshikazu Hashimoto, Hiroshi Takahashi, Tomohiro Shibata