Takeshi Fujisawa

Publication Activity (10 Years)

Years Active: 2003-2023
Publications (10 Years): 34

Top Topics

Power Consumption

Engineering Education

Top Venues

IEICE Electron. Express

Publications

Takeshi Fujisawa, Kunimasa Saitoh
Fabrication-tolerant, 2-mode, 4λ multiplexer based on Si waveguides for beyond Tbit/s optical Ethernet. OFC (2023)
Han Wang, Takeshi Fujisawa, Takanori Sato, Masaki Wada, Takayoshi Mori, Taiji Sakamoto, Ryota Imada, Takashi Matsui, Kazuhide Nakajima, Kunimasa Saitoh
and E-LP tapered mode converters using fast quasiadiabatic dynamics. IEICE Electron. Express 20 (23) (2023)
Gustavo Ocampo, Takanori Sato, Takeshi Fujisawa, Mayu Nakagawa, Kunimasa Saitoh
Relationship between Polarization Mode Dispersion and Crosstalk in Heterogeneous Multi-core Fibers with Different Cladding Diameters. OFC (2023)
Tadakazu Sakakura, Takeshi Fujisawa
Prototype of Visualization System for Discussion in Project-Based Learning Toward Education DX. ICEED (2023)
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
Silica-PLC based mode-dependent-loss equalizer for two LP mode transmission. OFC (2022)
Gustavo Ocampo, Takanori Sato, Takeshi Fujisawa, Yoshimichi Amma, Kunimasa Saitoh
Analysis of Crosstalk Dependence on Cladding Diameter in Heterogeneous Multi-core Fibers by Considering Polarization-mode Coupling Effects. OECC/PSC (2022)
Takuya Mitarai, Takeshi Fujisawa, Takuya Okimoto, Naoya Kono, Naoki Fujiwara, Yusuke Sawada, Taichi Muratsubaki, Takanori Sato, Kunimasa Saitoh, Hideki Yagi
Compact Power Splitters with Mosaic-based Structure Designed by Bayesian Direct-binary-search Method. OECC/PSC (2022)
Kodai Nakamura, Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh
High-tolerance CWDM4 wavelength multiplexer based on 2×2/2×1 MZ filters with polarization multiplexing. IEICE Electron. Express 18 (8) (2021)
Yusuke Sawada, Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh
Experimental Demonstration of Broadband Silicon 4-Mode (de)Multiplexer Designed by Wavefront-Matching Method. OFC (2021)
Takeshi Fujisawa, Taiji Sakamoto, Masashi Miyata, Takashi Matsui, Toshikazu Hashimoto, Ryoichi Kasahara, Kazuhide Nakajima, Kunimasa Saitoh
Wavefront-Matching-Method-Designed Six-Mode-Exchanger Based on Grating-Like Waveguide on Silica-PLC Platform. OFC (2020)
Naoto Sugawara, Takeshi Fujisawa, Kodai Nakamura, Yusuke Sawada, Taiji Sakamoto, Takashi Matsui, Kazuhide Nakajima, Kunimasa Saitoh
Modal Amplitude and Phase Estimation of NFP of Six-Mode FMF Based on Artificial Neural Network with the Help of Grey-Wolf-Optimizer. ECOC (2020)
Kodai Nakamura, Takeshi Fujisawa, Taiji Sakamoto, Takashi Matsui, Kazuhide Nakajima, Kunimasa Saitoh
A Tunable Mode Divider Based on Wavelength Insensitive Coupler using Thermo-Optic Effect for Gain-Equalization in MDM Network. OFC (2020)
Junya Takano, Takeshi Fujisawa, Yusuke Sawada, Kunimasa Saitoh
Low-Loss Silicon 2 × 4λ Multiplexers Composed of On-Chip Polarization-Splitter-Rotator and 2 × 2 and 2 × 1 Mach-Zehnder Filters for 400GbE. OFC (2020)
Naoto Sugawara, Misa Kudo, Takeshi Fujisawa, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima, Kunimasa Saitoh
3-Mode PLC-Based Mode Dependent Loss Equalizer in MDM Transmission. OECC/PSC (2019)
Junya Takano, Takeshi Fujisawa, Takanori Sato, Yusuke Sawada, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima, Kunimasa Saitoh
Low-Loss and Fabrication-Tolerant Si Four-Wavelength Multiplexer using Higher-Order Mode for 100/400GbE. OFC (2019)
Motoki Shirata, Misa Kudo, Takeshi Fujisawa, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima, Kunimasa Saitoh
A Design of Low MDL Scrambling-type PLC 6-mode Multiplexer. OECC/PSC (2019)
Kenta Nishimura, Takanori Sato, Takeshi Fujisawa, Yoshimichi Amma, Katsuhiro Takenaga, Kazuhiko Aikawa, Kunimasa Saitoh
Cladding Diameter Dependence of Inter-Core Crosstalk in Heterogeneous Multicore Fibers. OECC/PSC (2019)
Yusuke Sawada, Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh
First Experimental Demonstration of Wavefront-Matching-Method-Designed Silicon Mode Converters. OFC (2019)
Yusuke Sawada, Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh
CMOS-compatible Si-wire polarization beam splitter based on wavelength-insensitive coupler. IEICE Electron. Express 16 (8) (2019)
Misa Kudo, Takeshi Fujisawa, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima, Kunimasa Saitoh
A Broadband Mode Divider with Arbitrary Branching Ratio Based on Wavelength-Insensitive Coupler. OFC (2019)
Takanori Sato, Takeshi Fujisawa, Kunimasa Saitoh
Ultra-Robust Design of Mode (De)Multiplexer Based on Asymmetrical Directional Coupler Using Wire and One-Side Rib Waveguides. OECC/PSC (2019)
Tadakazu Sakakura, Norihisa Matsumoto, Akiko Nakatani, Takeshi Fujisawa
Digital teaching materials of Kosen fundamental mathematics for Bilingual Engineering Education. ICEED (2018)
Eri Taguchi, Takeshi Fujisawa, Yoko Yamashita, Shuntaro Makino, Nobutomo Hanzawa, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima, Fumihiko Yamamoto, Kunimasa Saitoh
A Review of PLC-Based Broadband Two-Mode Multi/Demultiplexer Designed by Wavefront Matching Method. IEICE Trans. Electron. (7) (2018)
Shuntaro Makino, Masahiro Suga, Takanori Sato, Takeshi Fujisawa, Kunimasa Saitoh
Ultimately low-loss and compact Si wire 90° waveguide bend composed of clothoid and normal curves for dense optical interconnect PICs. OFC (2017)
Shun Ohta, Takeshi Fujisawa, Shuntaro Makino, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Kazuhide Nakajima, Kunimasa Saitoh
Mach-Zehnder Mode/Wavelength (De)Multiplexer for WDM/MDM Optical Transmission. ECOC (2017)
Takeshi Fujisawa, Yoko Yamashita, Taiji Sakamoto, Takashi Matsui, Shuntaro Makino, Kyozo Tsujikawa, Kazuhide Nakajima, Kunimasa Saitoh
Scrambling-type three-mode multiplexer based on cascaded Y-branch waveguide with integrated mode rotator on PLC platform. OFC (2017)
Yuhei Ishizaka, Masaru Nagai, Takeshi Fujisawa, Kunimasa Saitoh
A photonic-plasmonic mode converter using mode-coupling-based polarization rotation for metal-inserted silicon platform. IEICE Electron. Express 14 (2) (2017)
Kazuki Yoshida, Takeshi Fujisawa, Takanori Sato, Kunimasa Saitoh
Group Delay Spread Analysis of Few-Mode, Coupled 3-Core Fibres: Optimum Index Profile and Maximum Transmission Distance for Strong Coupling Regime. ECOC (2017)
Takeshi Fujisawa, Eri Taguchi, Taiji Sakamoto, Takashi Matsui, Yoko Yamashita, Kyozo Tsujikawa, Kazuhide Nakajima, Kunimasa Saitoh
One chip, PLC three-mode exchanger based on symmetric and asymmetric directional couplers with integrated mode rotator. OFC (2017)
Takeshi Fujisawa, Ren Tojo, Shota Saitoh, Shoichiro Matsuo, Kunimasa Saitoh
Extremely small group delay spread six-core fiber with air-holes for mode-division-multiplexing: A principal mode analysis. OFC (2016)
Shigeru Kanazawa, Takeshi Fujisawa, Kiyoto Takahata, Yasuhiko Nakanishi, Hiroshi Yamazaki, Yuta Ueda, Wataru Kobayashi, Yoshifumi Muramoto, Hiroyuki Ishii, Hiroaki Sanjoh
56-Gbaud 4-PAM (112-Gbit/s) operation of flip-chip interconnection lumped-electrode EADFB laser module for equalizer-free transmission. OFC (2016)
Shigeru Kanazawa, Hiroshi Yamazaki, Yasuhiko Nakanishi, Takeshi Fujisawa, Kiyoto Takahata, Yuta Ueda, Wataru Kobayashi, Yoshifumi Muramoto, Hiroyuki Ishii, Hiroaki Sanjoh
Transmission of 214-Gbit/s 4-PAM signal using an ultra-broadband lumped-electrode EADFB laser module. OFC (2016)
Nobutomo Hanzawa, Kunimasa Saitoh, Taiji Sakamoto, Takashi Matsui, Kyozo Tsujikawa, Takeshi Fujisawa, Yuhei Ishizaka, Fumihiko Yamamoto
Demonstration of PLC-based six-mode multiplexer for mode division multiplexing transmission. ECOC (2015)
Shigeru Kanazawa, Takeshi Fujisawa, Kiyoto Takahata, Hiroaki Sanjoh, Ryuzo Iga, Yuta Ueda, Wataru Kobayashi, Hiroyuki Ishii
400-Gb/s operation of flip-chip interconnection EADFB laser array module. OFC (2015)
Wataru Kobayashi, M. Arai, Takeshi Fujisawa, Y. Shibata, Tomonari Sato, Toshio Ito, Koichi Hasebe, Takayuki Yamanaka, Hiroaki Sanjoh
40-Gbit/s EADFB laser integrated with short cavity SOA improving chirp characteristics with low power consumption. ECOC (2014)
Takeshi Fujisawa, Tsutomu Kitoh, Kei Watanabe, Kenya Suzuki, Masaki Kotoku, Hiroshi Takahashi
Wide-bandwidth, low-waveguide-width-sensitivity InP-based multimode interference coupler designed by wavefront matching method. IEICE Electron. Express 8 (24) (2011)
Takeshi Fujisawa, Kiyoto Takahata, Takashi Tadokoro, Wataru Kobayashi, Akira Ohki, Naoki Fujiwara, Shigeru Kanazawa, Takayuki Yamanaka, Fumiyoshi Kano
Long-Reach 100 Gbit Ethernet Light Source Based on 4×25-Gbit/s 1.3-µm InGaAlAs EADFB Lasers. IEICE Trans. Electron. (7) (2011)
Keiichi Morikawa, Takeshi Fujisawa, Kunimasa Saitoh, Masanori Koshiba
Transmission characteristics of laterally illuminated photonic crystal fibers. IEICE Electron. Express 3 (4) (2006)
Norman D. Cook, Takeshi Fujisawa, Kazuaki Takami
Evaluation of the affect of speech intonation using a model of the perception of interval dissonance and harmonic tension. INTERSPEECH (2003)