Hitoshi Kawashima

45 papers Journal 13Unranked 32

Year	Rank	Type	Title / Venue / Authors
2025	—	`conf`	Enhancing Non-Volatile and Reversible Phase Shift in Si-Rich SiN Waveguide. ECOC Yuriko Maegami, Guangwei Cong, Rai Kou, Toshihiro Narushima, Tai Tsuchizawa, Hitoshi Kawashima, Noritsugu Yamamoto, Koji Yamada
2025	J	`jnl`	Improving ADME Prediction with Multitask Graph Neural Networks and Assessing Explainability in Lead Optimization. J. Chem. Inf. Model. Shoma Ito, Takuto Koyama, Shigeyuki Matsumoto, Ryosuke Kojima, Yuji Okamoto, Masataka Kuroda, Hitoshi Kawashima, Reiko Watanabe, Tomoki Yonezawa, Takaaki Sumiyoshi, Kazuyoshi Ikeda, Kenji Mizuguchi, Hiroaki Iwata, Yasushi Okuno
2022	—	`conf`	Design of a Hybrid Wavelength Selective Crossconnect Utilizing a Silicon Optical Switch Array. OECC/PSC Yuki Moriya, Fumi Nakamura, Kunio Kobayashi, Hitoshi Kawashima, Haoshuo Chen, Hiroyuki Tsuda
2022	—	`conf`	Progress and Future Prospect of Silicon Photonics Based Large Scale Optical Switches. OECC/PSC Kazuhiro Ikeda, Keijiro Suzuki, Ryotaro Konoike, Shu Namiki, Hitoshi Kawashima
2022	—	`conf`	Recent Advances in Large-scale Optical Switches Based on Silicon Photonics. OFC Keijiro Suzuki, Ryotaro Konoike, Hiroyuki Matsuura, Ryosuke Matsumoto, Takashi Inoue, Shu Namiki, Hitoshi Kawashima, Kazuhiro Ikeda
2021	—	`conf`	5.5%-Δ-PLC/Silicon Photonics Hybrid Wavelength MUX/DEMUX-and-Switch Device. OFC Kazuhiro Ikeda, Noritaka Matsubara, Junichi Hasegawa, Ryotaro Konoike, Hiroyuki Matsuura, Keijiro Suzuki, Hitoshi Kawashima
2020	—	`conf`	5.7-dB Fiber-to-Fiber Loss 8 × 8 Silicon Photonics Switch with Port-Alternated Switch-and-Select Architecture. OFC Ryotaro Konoike, Keijiro Suzuki, Hitoshi Kawashima, Kazuhiro Ikeda
2020	—	`conf`	O-Band Strictly Non-Blocking 8 × 8 Silicon-Photonics Switch. OFC Keijiro Suzuki, Ryotaro Konoike, Guangwei Cong, Koji Yamada, Shu Namiki, Hitoshi Kawashima, Kazuhiro Ikeda
2020	J	`jnl`	Strictly Non-Blocking Silicon Photonics Switches. IEICE Trans. Electron. Keijiro Suzuki, Ryotaro Konoike, Satoshi Suda, Hiroyuki Matsuura, Shu Namiki, Hitoshi Kawashima, Kazuhiro Ikeda
2019	—	`conf`	A 300-mm-wafer silicon photonics technology for advanced information systems. ISDCS Koji Yamada, Guangwei Cong, Makoto Okano, Yuriko Maegami, Morifumi Ohno, Keijiro Suzuki, Satoshi Suda, Ryotaro Konoike, Kazuhiro Ikeda, Hitoshi Kawashima, Tsuyoshi Horikawa, Shu Namiki, Masahiko Mori, Shota Kita, Kengo Nozaki, Akihiko Shinya, Masaya Notomi
2019	J	`jnl`	Computational Model To Predict the Fraction of Unbound Drug in the Brain. J. Chem. Inf. Model. Tsuyoshi Esaki, Rikiya Ohashi, Reiko Watanabe, Yayoi Natsume-Kitatani, Hitoshi Kawashima, Chioko Nagao, Kenji Mizuguchi
2019	J	`jnl`	Impact of quality trimming on the efficiency of reads joining and diversity analysis of Illumina paired-end reads in the context of QIIME1 and QIIME2 microbiome analysis frameworks. BMC Bioinform. Attayeb Mohsen, Jonguk Park, Yi-An Chen, Hitoshi Kawashima, Kenji Mizuguchi
2019	—	`conf`	Low-Crosstalk Bandwidth Expansion in $32\times 32$ Silicon Optical Switch with Port-Exchanged Mach-Zehnder Switch. OECC/PSC Keijiro Suzuki, Ryotaro Konoike, Satoshi Suda, Hiroyuki Matsuura, Shu Namiki, Hitoshi Kawashima, Kazuhiro Ikeda
2019	—	`conf`	Low-Loss, Low-Crosstalk, and Large-Scale Silicon Photonics Switch. OFC Keijiro Suzuki, Ryotaro Konoike, Satoshi Suda, Hiroyuki Matsuura, Shu Namiki, Hitoshi Kawashima, Kazuhiro Ikeda
2019	—	`conf`	Polarization-Diversity 32 × 32 Si Photonics Switch with Non-Duplicate Diversity Circuit in Double-Layer Platform. OFC Keijiro Suzuki, Ryotaro Konoike, Nobuyuki Yokoyama, Miyoshi Seki, Minoru Ohtsuka, Shigeru Saitoh, Satoshi Suda, Hiroyuki Matsuura, Koji Yamada, Shu Namiki, Hitoshi Kawashima, Kazuhiro Ikeda
2018	—	`conf`	32-Port 5.5%-Δ Silica-Based Connecting Device for Low-Loss Coupling between SMFs and Silicon Waveguides. OFC Junichi Hasegawa, Kazuhiro Ikeda, Keijiro Suzuki, Shintaro Yamasaki, Go Kobayashi, Masanori Takahashi, Hitoshi Kawashima
2018	—	`conf`	Fast Frequency Tuning of Silicon-Photonic Thermo-optic MZI Filters using "Turbo Pulse" Method. OFC Hiroyuki Matsuura, Keijiro Suzuki, Satoshi Suda, Kazuhiro Ikeda, Hitoshi Kawashima, Shu Namiki
2018	—	`conf`	Fast Optical Circuit Switch Using Monolithically Integrated Silicon-Photonic Space Switch and Wavelength-Tuneable Filter. ECOC Yojiro Mori, Mungun-Erdene Ganbold, Ryuta Shiraki, Keijiro Suzuki, Hiroyuki Matsuura, Hitoshi Kawashima, Shu Namiki, Kazuhiro Ikeda, Ken-ichi Sato
2018	—	`conf`	In-line Optical Amplification for Silicon Photonics Platform by Flip-Chip Bonded InP-SOAs. OFC Takeshi Matsumoto, Teruo Kurahashi, Ryotaro Konoike, Ken Tanizawa, Keijiro Suzuki, Ayahito Uetake, Kazumasa Takabayashi, Kazuhiro Ikeda, Hitoshi Kawashima, Suguru Akiyama, Shigeaki Sekiguchi
2018	—	`conf`	Lossless Operation of SOA-Integrated Silicon Photonics Switch for 8 × 32-Gbaud 16-QAM WDM Signals. OFC Ryotaro Konoike, Keijiro Suzuki, Takashi Inoue, Takeshi Matsumoto, Teruo Kurahashi, Ayahito Uetake, Kazumasa Takabayashi, Suguru Akiyama, Shigeaki Sekiguchi, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima
2018	—	`conf`	Low Insertion Loss and Power Efficient 32 × 32 Silicon Photonics Switch with Extremely-High-Δ PLC Connector. OFC Keijiro Suzuki, Ryotaro Konoike, Junichi Hasegawa, Satoshi Suda, Hiroyuki Matsuura, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima
2018	—	`conf`	Reconfigurable 3-Channel All-Optical MIMO Circuit on Silicon Based on Multi-Plane Light Conversion. OFC Rui Tang, Takuo Tanemura, Samir Ghosh, Keijiro Suzuki, Ken Tanizawa, Kazuhiro Ikeda, Hitoshi Kawashima, Yoshiaki Nakano
2018	J	`jnl`	Silicon photonics based 1 × 2 wavelength selective switch using fold-back arrayed-waveguide gratings. IEICE Electron. Express Fumi Nakamura, Hideaki Asakura, Keijiro Suzuki, Ken Tanizawa, Minoru Ohtsuka, Nobuyuki Yokoyama, Kazuyuki Matsumaro, Miyoshi Seki, Keiji Koshino, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima, Hiroyuki Tsuda
2018	—	`conf`	Ultra-Compact Silicon Photonics Switch with Ultra-Dense Thermo-Optic MZI Matrix and Multi-Layer Wiring. ECOC Ryotaro Konoike, Keijiro Suzuki, Shu Namiki, Hitoshi Kawashima, Kazuhiro Ikeda
2017	—	`conf`	2.5-dB loss, 100-nm Operating Bandwidth, and Low Power Consumption Strictly-Non-Blocking 8 × 8 Si Switch. ECOC Keijiro Suzuki, Ken Tanizawa, Satoshi Suda, Hiroyuki Matsuura, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima
2017	—	`conf`	Accelerating switching speed of thermo-optic MZI silicon-photonic switches with "turbo pulse" in PWM control. OFC Hiroyuki Matsuura, Satoshi Suda, Ken Tanizawa, Keijiro Suzuki, Kazuhiro Ikeda, Hitoshi Kawashima, Shu Namiki
2017	—	`conf`	Fully integrated non-duplicate polarization-diversity 8 × 8 Si-wire PILOSS switch. OFC Ken Tanizawa, Keijiro Suzuki, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima
2017	J	`jnl`	Polarization diversity circuit based on silica waveguides and photonic crystal waveplates for a 4×4 silicon optical switch. IEICE Electron. Express Koki Sugiyama, Takafumi Chiba, Ken Tanizawa, Keijiro Suzuki, Takayuki Kawashima, Shojiro Kawakami, Kazuhiro Ikeda, Hitoshi Kawashima, Hiroshi Takahashi, Hiroyuki Tsuda
2017	—	`conf`	Silicon-photonics polarization-insensitive broadband strictly-non-blocking 8 × 8 blade switch. OFC Keijiro Suzuki, Ken Tanizawa, Satoshi Suda, Hiroyuki Matsuura, Takashi Inoue, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima
2016	—	`conf`	In-line optical amplification for Si waveguides on 1×8 splitter and selector by flip-chip bonded InP-SOAs. OFC Takeshi Matsumoto, Teruo Kurahashi, Ken Tanizawa, Keijiro Suzuki, Ayahito Uetake, Kazumasa Takabayashi, Kazuhiro Ikeda, Hitoshi Kawashima, Suguru Akiyama
2016	—	`conf`	Multi-port optical switch based on silicon photonics. OFC Hitoshi Kawashima, Keijiro Suzuki, Ken Tanizawa, Satoshi Suda, Guangwei Cong, Hiroyuki Matsuura, Shu Namiki, Kazuhiro Ikeda
2016	—	`conf`	Novel PILOSS port assignment for compact polarization-diversity Si-wire optical switch. OFC Ken Tanizawa, Keijiro Suzuki, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima
2015	—	`conf`	32×32 strictly non-blocking Si-wire optical switch on ultra-small die of 11×25 mm OFC Ken Tanizawa, Keijiro Suzuki, Munehiro Toyama, Minoru Ohtsuka, Nobuyuki Yokoyama, Kazuyuki Matsumaro, Miyoshi Seki, Keiji Koshino, Toshio Sugaya, Satoshi Suda, Guangwei Cong, Toshio Kimura, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima
2015	J	`jnl`	Evaluation of the phase error in Si-wire arrayed-waveguide gratings fabricated by ArF-immersion photolithography. IEICE Electron. Express Kyosuke Muramatsu, Hideaki Asakura, Keijiro Suzuki, Ken Tanizawa, Munehiro Toyama, Minoru Ohtsuka, Nobuyuki Yokoyama, Kazuyuki Matsumaro, Miyoshi Seki, Keiji Koshino, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima, Hiroyuki Tsuda
2015	—	`conf`	In-band OSNR monitor based on 3 × 3 Si-wire MMI coupler. ECOC Ken Tanizawa, Keisuke Sorimoto, Keijiro Suzuki, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima
2015	—	`conf`	Power-efficient gray-scale control of silicon thermo-optic phase shifters by pulse width modulation using monolithically integrated MOSFET. OFC Guangwei Cong, Takashi Matsukawa, Keijiro Suzuki, Ken Tanizawa, Sang-Hun Kim, Tadashi Chiba, Hirofumi Tadokoro, Masashi Yanagihara, Morifumi Ohno, Haruhiko Kuwatsuka, Yasushi Igarashi, Meishoku Masahara, Hiroshi Ishikawa, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima
2014	J	`jnl`	Multiport optical switches integrated on Si photonics platform. IEICE Electron. Express Keijiro Suzuki, Guangwei Cong, Ken Tanizawa, Sang-Hun Kim, Kazuhiro Ikeda, Shu Namiki, Hitoshi Kawashima
2014	—	`conf`	Robust design of 3-dB directional coupler with weak gap sensitivity for silicon wire waveguide. OFC Guangwei Cong, Keijiro Suzuki, Sang-Hun Kim, Ken Tanizawa, Shu Namiki, Hitoshi Kawashima
2014	—	`conf`	Small-sized Mach-Zehnder interferometer optical switch using thin film Ge2Sb2Te5 phase-change material. OFC Takumi Moriyama, Hitoshi Kawashima, Masashi Kuwahara, Xiaomin Wang, Hideaki Asakura, Hiroyuki Tsuda
2014	J	`jnl`	Ultra-compact, self-holding asymmetric Mach-Zehnder interferometer switch using Ge IEICE Electron. Express Takumi Moriyama, Daiki Tanaka, Paridhi Jain, Hitoshi Kawashima, Masashi Kuwahara, Xiaomin Wang, Hiroyuki Tsuda
2013	—	`conf`	Implementation of a Grating-type Spatial Optical Switch based on Phase Change Material and its Static Measurement. PHOTOPTICS Xiaomin Wang, Masashi Kuwahara, Hitoshi Kawashima, Hiroyuki Tsuda
2013	J	`jnl`	MEMS mirror with slot structures suitable for flexible-grid WSS. IEICE Electron. Express Keisuke Sorimoto, Hitoshi Kawashima, Masahiko Mori, Toshifumi Hasama, Hiroshi Ishikawa, Hiroyuki Tsuda, Hisato Uetsuka
2012	J	`jnl`	Built-In Microplanar Lens for Light Coupling to Two-Dimensional Photonic Crystal Waveguide. IEICE Trans. Electron. Naoki Ikeda, Yu Tanaka, Hitoshi Kawashima, Yoshimasa Sugimoto, Toshifumi Hasama, Kiyoshi Asakawa, Hiroshi Ishikawa
2011	J	`jnl`	Phase error compensation for multilayered AWG in LCOS-based WSS. IEICE Electron. Express Keisuke Sorimoto, Kenji Kintaka, Hitoshi Kawashima, Masahiko Mori, Toshifumi Hasama, Hiroshi Ishikawa, Hiroyuki Tsuda, Hisato Uetsuka
2010	J	`jnl`	Fast aberration-correcting algorithm for an SLM-based optical switch. IEICE Electron. Express Keisuke Sorimoto, Kenji Kintaka, Hitoshi Kawashima, Masahiko Mori, Toshifumi Hasama, Hiroshi Ishikawa, Hiroyuki Tsuda, Hisato Uetsuka