Takuro Fujii

59 papers A 1C 1Misc 1Journal 9Unranked 47
YearRankTypeTitle / Venue / Authors
2025 — conf
42-Gbps/ch x 4 ch Simultaneous Error-Free Operation with Low-Power Transmitter Flip-Chip-Bonded 1.3-μm LD-Array-on-Si.
OFC
Toshiki Kishi, Munehiko Nagatani, Shigeru Kanazawa, Takuro Fujii, Hidetaka Nishi, Tadashi Minotani, Norio Sato, Tomonari Sato, Shinji Matsuo
2025 — conf
A Japanese Language Model and Three New Evaluation Benchmarks for Pharmaceutical NLP.
IJCNLP-AACL (long papers)
Shinnosuke Ono, Issey Sukeda, Takuro Fujii, Kosei Buma, Shunsuke Sasaki
2025 J jnl
A Japanese Language Model and Three New Evaluation Benchmarks for Pharmaceutical NLP.
CoRR
Issey Sukeda, Takuro Fujii, Kosei Buma, Shunsuke Sasaki, Shinnosuke Ono
2025 — conf
High-Speed and High-Temperature-Operation III-V on Si Membrane DFB Lasers.
OFC
Koji Takeda, Takuro Fujii, Suguru Yamaoka, Tatsurou Hiraki, Yoshiho Maeda, Shinji Matsuo
2025 — conf
Integrated Optical Link on Si Wafer Using Low Energy Membrane InP-based Photonic Devices.
OFC
Tatsurou Hiraki, Koji Takeda, Takuro Fujii, Takuma Aihara, Yoshiho Maeda, Hiroki Sugiyama, Tomonari Sato, Shinji Matsuo
2025 — conf
Micro-transfer Printed Membrane Laser and Electroabsorption Modulator on Si waveguide Integrated with Polymer Spot-size Converter.
OFC
Yoshiho Maeda, Tatsurou Hiraki, Takuma Aihara, Hiroya Homma, Takuro Fujii, Koji Takeda, Tomonari Sato, Yasutomo Ota, Satoshi Iwamoto, Yasuhiko Arakawa, Shinji Matsuo
2025 — conf
Micro-transfer Printed Widely Tunable Membrane Laser on a SiN Platform.
ECOC
Takuma Aihara, Yoshiho Maeda, Tatsurou Hiraki, Takuro Fujii, Koji Takeda, Tomonari Sato, Shinji Matsuo
2025 — conf
Optical Chiplet with 0.75-pJ/bit Transmitter Using Membrane III-V Electro-Absorption Modulators on Si and Differential CMOS Driver.
ECOC
Tatsurou Hiraki, Tadashi Minotani, Yohei Saito, Takuma Aihara, Yoshiho Maeda, Toru Miura, Takuro Fujii, Tomonari Sato, Norio Sato, Shinji Matsuo
2024 A conf
Automated Sperm Assessment Framework and Neural Network Specialized for Sperm Video Recognition.
WACV
Takuro Fujii, Hayato Nakagawa, Teppei Takeshima, Yasushi Yumura, Tomoki Hamagami
2024 J jnl
Estimation of Multi-Expert Sperm Assessments Using Video Recognition Based Model Trained by EMD Loss.
IEEE Access
Hayato Nakagawa, Takuro Fujii, Yasushi Yumura, Tomoki Hamagami
2024 C conf
JAPAGEN: Efficient Few/Zero-shot Learning via Japanese Training Dataset Generation with LLM.
PACLIC
Takuro Fujii, Satoru Katsumata
2024 J jnl
JAPAGEN: Efficient Few/Zero-shot Learning via Japanese Training Dataset Generation with LLM.
CoRR
Takuro Fujii, Satoru Katsumata
2024 — conf
Process-tolerant III-V/Si Membrane Distributed Reflector Lasers and 50-Gb/s Direct Modulation at 80°C.
OFC
Koji Takeda, Takuro Fujii, Yoshiho Maeda, Toru Segawa, Shinji Matsuo
2024 — conf
Uncooled Operation of Directly Modulated Membrane Laser with Buried Sapphire Layer on Si Substrate.
OFC
Tatsurou Hiraki, Yoshiho Maeda, Takuro Fujii, Koji Takeda, Takuma Aihara, Toru Segawa, Yasutomo Ota, Satoshi Iwamoto, Yasuhiko Arakawa, Shinji Matsuo
2023 — conf
30-Gbps/ch x 4 ch Simultaneous Error-Free Transmission with A Low-Power Transmitter Flip-Chip-Bonded 1.3-μm LD-Array-on-Si.
OFC
Toshiki Kishi, Munehiko Nagatani, Shigeru Kanazawa, Kota Shikama, Takuro Fujii, Hidetaka Nishi, Tadashi Minotani, Norio Sato, Toru Segawa, Shinji Matsuo
2023 J jnl
Automated Sperm Assessment Framework and Neural Network Specialized for Sperm Video Recognition.
CoRR
Takuro Fujii, Hayato Nakagawa, Teppei Takeshima, Yasushi Yumura, Tomoki Hamagami
2023 — conf
BiLMa: Bidirectional Local-Matching for Text-based Person Re-identification.
ICCV (Workshops)
Takuro Fujii, Shuhei Tarashima
2023 J jnl
BiLMa: Bidirectional Local-Matching for Text-based Person Re-identification.
CoRR
Takuro Fujii, Shuhei Tarashima
2023 — conf
How do different tokenizers perform on downstream tasks in scriptio continua languages?: A case study in Japanese.
ACL (student)
Takuro Fujii, Koki Shibata, Atsuki Yamaguchi, Terufumi Morishita, Yasuhiro Sogawa
2023 J jnl
How do different tokenizers perform on downstream tasks in scriptio continua languages?: A case study in Japanese.
CoRR
Takuro Fujii, Koki Shibata, Atsuki Yamaguchi, Terufumi Morishita, Yasuhiro Sogawa
2023 — conf
Uncooled Operation of Si Mach-Zehnder Modulator Integrated with Membrane Semiconductor Optical Amplifiers inside Interferometer Arms.
OFC
Takuma Aihara, Tatsurou Hiraki, Takuro Fujii, Koji Takeda, Hiroshi Fukuda, Takaaki Kakitsuka, Tai Tsuchizawa, Shinji Matsuo
2022 — conf
Over-67-GHz-bandwidth Membrane InGaAlAs EADFB Laser on Si Platform.
OFC
Tatsurou Hiraki, Takuma Aihara, Yoshiho Maeda, Takuro Fujii, Tomonari Sato, Tai Tsuchizawa, Shinji Matsuo, Kiyoto Takahata, Takaaki Kakitsuka
2021 — conf
2-channel 112-Gbps NRZ Short-Reach Transmission Based on 60-GHz-Bandwidth Directly-Modulated Membrane Laser Array on Si.
ECOC
Nikolaos-Panteleimon Diamantopoulos, Takuro Fujii, Suguru Yamaoka, Hidetaka Nishi, Koji Takeda, Tai Tsuchizawa, Toru Segawa, Takaaki Kakitsuka, Shinji Matsuo
2021 — conf
8-ch, 160-nm-Wavelength-Range Membrane Laser Array Using Selective Epitaxy on InP-on-Insulator Substrate.
OFC
Takuro Fujii, Tomonari Sato, Nikolaos-Panteleimon Diamantopoulos, Koji Takeda, Hidetaka Nishi, Takuma Tsurugaya, Tai Tsuchizawa, Shinji Matsuo
2020 — conf
4×56-GBaud PAM-4 SDM Transmission over 5.9-km 125-µm-Cladding MCF using III-V-on-Si DMLs.
OFC
Nikolaos-Panteleimon Pandelis Diamantopoulos, Hidetaka Nishi, Takuro Fujii, Kota Shikama, Takashi Matsui, Koji Takeda, Takaaki Kakitsuka, Kazuhide Nakajima, Shinji Matsuo
2020 — conf
50-GHz-bandwidth Electro-absorption Modulator with Membrane InGaAsP Lateral p-i-n Diode on Si Platform.
ECOC
Tatsurou Hiraki, Takuma Aihara, Yoshiho Maeda, Takuro Fujii, Tai Tsuchizawa, Kiyoto Takahata, Takaaki Kakitsuka, Shinji Matsuo
2020 — conf
A 0.57-mW/Gbps, 2ch × 53-Gbps Low-Power PAM4 Transmitter Front-End Flip-Chip-Bonded 1.3-µm LD-Array-on-Si.
OFC
Toshiki Kishi, Munehiko Nagatani, Shigeru Kanazawa, Kota Shikama, Takuro Fujii, Hidetaka Nishi, Hiroshi Yamazaki, Norio Sato, Hideyuki Nosaka, Shinji Matsuo
2020 — conf
Femto-Farad Nanophotonic Devices for fJ/Bit Signal Conversion.
OFC
Kengo Nozaki, Shinji Matsuo, Takuro Fujii, Koji Takeda, Eiichi Kuramochi, Akihiko Shinya, Masaya Notomi
2020 — conf
Heterogeneously Integrated Membrane DFB Laser and Si Mach-Zehnder Modulator on Si Photonics Platform.
ECOC
Takuma Aihara, Tatsurou Hiraki, Takuro Fujii, Koji Takeda, Tai Tsuchizawa, Takaaki Kakitsuka, Hiroshi Fukuda, Shinji Matsuo
2020 — conf
Mach-Zehnder Modulator using Membrane InGaAsP Phase Shifters and SOAs inside Interferometer Arms on Si Photonics Platform.
OFC
Takuma Aihara, Tatsurou Hiraki, Takuro Fujii, Koji Takeda, Takaaki Kakitsuka, Tai Tsuchizawa, Shinji Matsuo
2020 — conf
Net 113-Gbps PAM-4 Transmission Using Membrane DML-on-Si with 0.34 pJ/bit at 50 °C.
ECOC
Nikolaos-Panteleimon Diamantopoulos, Suguru Yamaoka, Takuro Fujii, Hidetaka Nishi, Koji Takeda, Tai Tsuchizawa, Takaaki Kakitsuka, Shinji Matsuo
2020 — conf
Net 321.24-Gb/s IMDD Transmission Based on a >100-GHz Bandwidth Directly-Modulated Laser.
OFC
Nikolaos-Panteleimon Diamantopoulos, Hiroshi Yamazaki, Suguru Yamaoka, Munehiko Nagatani, Hidetaka Nishi, Hiromasa Tanobe, Ryo Nakao, Takuro Fujii, Koji Takeda, Takaaki Kakitsuka, Hitoshi Wakita, Minoru Ida, Hideyuki Nosaka, Fumio Koyama, Yutaka Miyamoto, Shinji Matsuo
2020 — conf
Si-waveguide-coupled Membrane InGaAsP-multiple-quantum-well Photodetector with Large Bandwidth at High Optical Input Power.
OFC
Yoshiho Maeda, Tatsurou Hiraki, Takuma Aihara, Takuro Fujii, Koji Takeda, Tai Tsuchizawa, Shinji Matsuo
2019 — conf
56-Gbit/s Operations of Mach-Zehnder Modulators using 300-μm-Long Membrane InGaAsP Phase Shifters and SiN waveguides on Si.
OFC
Takuma Aihara, Tatsurou Hiraki, Takuro Fujii, Koji Takeda, Tai Tsuchizawa, Takaaki Kakitsuka, Hiroshi Fukuda, Shinji Matsuo
2019 — conf
A 25-Gbps × 4 ch, Low-Power Compact Wire-Bond-Free 3D-Stacked Transmitter Module with 1.3-μm LD-Array-on-Si for On-Board Optics.
OFC
Toshiki Kishi, Hitoshi Wakita, Kota Shikama, Munehiko Nagatani, Shigeru Kanazawa, Takuro Fujii, Hidetaka Nishi, Hiroshi Ishikawa, Yuko Kawajiri, Atsushi Aratake, Hideyuki Nosaka, Hiroshi Fukuda, Shinji Matsuo
2019 — conf
ANN Equalizer for Performance Improvement of PAM-M Signals Using $1.3-\mu \mathrm{m}$ Membrane DML-on-Silicon.
OECC/PSC
Nikolaos-Panteleimon Diamantopoulos, Takuro Fujii, Hidetaka Nishi, Koji Takeda, Takaaki Kakitsuka, Shinji Matsuo
2019 — conf
Ultra-High Bandwidth InP IQ Modulator for Beyond 100-GBd Transmission.
OFC
Yoshihiro Ogiso, Josuke Ozaki, Yuta Ueda, Hitoshi Wakita, Munehiko Nagatani, Hiroshi Yamazaki, Masanori Nakamura, Takayuki Kobayashi, Shigeru Kanazawa, Takuro Fujii, Yasuaki Hashizume, Hiromasa Tanobe, Nobuhiro Nunoya, Minoru Ida, Yutaka Miyamoto, Mitsuteru Ishikawa
2018 — conf
1-fJ/bit Direct Modulation of Photonic-Crystal Lasers.
ECOC
Koji Takeda, Takuro Fujii, Akihiko Shinya, Masaya Notomi, Takaaki Kakitsuka, Shinji Matsuo
2018 — conf
A 137-mW, 4 ch × 25-Gbps Low-Power Compact Transmitter Flip-Chip-Bonded 1.3-μm LD-Array-on-Si.
OFC
Toshiki Kishi, Munehiko Nagatani, Shigeru Kanazawa, Shinsuke Nakano, Hiroaki Katsurai, Takuro Fujii, Hidetaka Nishi, Takaaki Kakitsuka, Koichi Hasebe, Kota Shikama, Yuko Kawajiri, Atsushi Aratake, Hideyuki Nosaka, Hiroshi Fukuda, Shinji Matsuo
2018 Misc conf
Energy-Efficient 100-Gbps PAM Transmissions Using a 1.3-µm Membrane DML-on-Silicon.
PSC
Nikolaos-Panteleimon Diamantopoulos, Takuro Fujii, Hidetaka Nishi, Koji Takeda, Takaaki Kakitsuka, Shinji Matsuo
2018 — conf
Energy-Efficient 120-Gbps DMT Transmission Using a 1.3-μm Membrane Laser on Si.
OFC
Nikolaos-Panteleimon Pandelis Diamantopoulos, Takuro Fujii, Hidetaka Nishi, Koji Takeda, Takaaki Kakitsuka, Shinji Matsuo
2018 — conf
Energy-Efficient 400G SDM Transmitter Based on DMT and a 1.3-sµm Membrane DML-Array-on-Si.
ECOC
Nikolaos-Panteleimon Diamantopoulos, Kota Shikama, Hidetaka Nishi, Takuro Fujii, Toshiki Kishi, Koji Takeda, Yoshiteru Abe, Takashi Matsui, Takaaki Kakitsuka, Hiroshi Fukuda, Kazuhide Nakajima, Shinji Matsuo
2018 — conf
Heterogeneously Integrated III-V Lasers Fabricated Using Epitaxial Growth on an InP/SiO2/Si Substrate.
OFC
Takuro Fujii, Koji Takeda, Hidetaka Nishi, Shinji Matsuo
2018 — conf
Heterogeneously Integrated Mach-Zehnder Modulator Using Membrane InGaAsP Phase Shifter and Hydrogen-Free SiN Waveguide on Si Platform.
ECOC
Tatsurou Hiraki, Takuma Aihara, Takuro Fujii, Koji Takeda, Tai Tsuchizawa, Takaaki Kakitsuka, Hiroshi Fukuda, Shinji Matsuo
2018 — conf
Lateral Current Injection Membrane Buried Heterostructure Lasers Integrated on 200-nm-thick Si Waveguide.
OFC
Takuma Aihara, Tatsurou Hiraki, Koji Takeda, Koichi Hasebe, Takuro Fujii, Tai Tsuchizawa, Takaaki Kakitsuka, Shinji Matsuo
2018 — conf
Monolithic Integration of an 8-channel Directly Modulated Membrane-laser Array and a SiN AWG Filter on Si.
OFC
Hidetaka Nishi, Takuro Fujii, Nikolaos-Panteleimon Diamantopoulos, Koji Takeda, Erina Kanno, Takaaki Kakitsuka, Tai Tsuchizawa, Hiroshi Fukuda, Shinji Matsuo
2018 — conf
Multicore-Fiber LC Receptacle with Compact Fan-in/Fan-out for Short-Reach Transceivers.
OFC
Kota Shikama, Yoshiteru Abe, Toshiki Kishi, Koji Takeda, Takuro Fujii, Hidetaka Nishi, Takashi Matsui, Atsushi Aratake, Kazuhide Nakajima, Shinji Matsuo
2018 — conf
Ultra-High Bandwidth InP IQ Modulator co-assembled with Driver IC for Beyond 100-GBd CDM.
OFC
Yoshihiro Ogiso, Hitoshi Wakita, Munehiko Nagatani, Hiroshi Yamazaki, Masanori Nakamura, Takayuki Kobayashi, Johsuke Ozaki, Yuta Ueda, S. Nakano, Shigeru Kanazawa, Takuro Fujii, Yasuaki Hashizume, Hiromasa Tanobe, Nobuhiro Nunoya, Minoru Ida, Yutaka Miyamoto, Nobuhiro Kikuchi
2017 — conf
32-Gbit/s Heterogeneously Integrated Mach-Zehnder Modulator with 250μm-long III-V/Si MOS-capacitor Phase Shifter.
ECOC
Tatsurou Hiraki, Takuma Aihara, Koichi Hasebe, Takuro Fujii, Koji Takeda, Takaaki Kakitsuka, Tai Tsuchizawa, Hiroshi Fukuda, Shinji Matsuo
2017 J jnl
Evaluation of Device Parameters for Membrane Lasers on Si Fabricated with Active-Layer Bonding Followed by Epitaxial Growth.
IEICE Trans. Electron.
Takuro Fujii, Koji Takeda, Erina Kanno, Koichi Hasebe, Hidetaka Nishi, Tsuyoshi Yamamoto, Takaaki Kakitsuka, Shinji Matsuo
2017 — conf
Heterogeneously integrated InP/Si metal-oxide-semiconductor capacitor Mach-Zehnder modulator.
OFC
Tatsurou Hiraki, Takuma Aihara, Koichi Hasebe, Takuro Fujii, Koji Takeda, Tai Tsuchizawa, Takaaki Kakitsuka, Hiroshi Fukuda, Shinji Matsuo
2017 — conf
High Performance Epitaxially Grown III-V Membrane Lasers on Si.
ECOC
Takuro Fujii, Koji Takeda, Hidetaka Nishi, Shinji Matsuo
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 J jnl
Sub-fF-Capacitance Photonic-Crystal Photodetector Towards fJ/bit On-Chip Receiver.
IEICE Trans. Electron.
Kengo Nozaki, Shinji Matsuo, Koji Takeda, Takuro Fujii, Masaaki Ono, Abdul Shakoor, Eiichi Kuramochi, Masaya Notomi
2015 — conf
Membrane distributed-reflector laser integrated with SiOx-based spot-size converter on Si platform.
ECOC
Hidetaka Nishi, Takuro Fujii, Koji Takeda, Koichi Hasebe, Takaaki Kakitsuka, Tai Tsuchizawa, Tsuyoshi Yamamoto, Koji Yamada, Shinji Matsuo
2014 — conf
25-Gbit/s direct modulation of photonic-crystal lasers with a 10.5-fJ/bit energy cost for on/off-chip optical interconnects.
ECOC
Koji Takeda, Tomonari Sato, Takuro Fujii, Akihiko Shinya, Eiichi Kuramochi, Masaya Notomi, Koichi Hasebe, Takaaki Kakitsuka, Shinji Matsuo
2014 — conf
50-Gbit/s operation of lateral pin diode structure electro-absorption modulator integrated DFB laser.
ECOC
Koichi Hasebe, Tomonari Sato, Koji Takeda, Takuro Fujii, Takaaki Kakitsuka, Shinji Matsuo
2014 — conf
Ultralow operating energy of directly modulated DFB laser on SiO2/Si substrate.
ECOC
Shinji Matsuo, Takuro Fujii, Koichi Hasebe, Koji Takeda, Tomonari Sato, Takaaki Kakitsuka
2011 J jnl
A Fusion-Spliced Near-Field Optical Fiber Probe Using Photonic Crystal Fiber for Nanoscale Thermometry Based on Fluorescence-Lifetime Measurement of Quantum Dots.
Sensors
Takuro Fujii, Yoshihiro Taguchi, Toshiharu Saiki, Yuji Nagasaka