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ORCIDToshihiko Hirooka
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Journal Articles
- 2023
[j19]Masato Yoshida, Kosuke Kimura, Toshihiko Hirooka, Keisuke Kasai, Masataka Nakazawa:
Demodulation Performance Comparison of High-Speed Coherent Nyquist Pulse Signal with Analog and Digital Demultiplexing Schemes. IEICE Trans. Commun. 106(11): 1059-1064 (2023)- 2022
- [j18]Masato Yoshida, Kozo Sato, Toshihiko Hirooka, Keisuke Kasai, Masataka Nakazawa:
Precise Measurements and their Analysis of GAWBS-Induced Depolarization Noise in Multi-Core Fiber for Digital Coherent Transmission. IEICE Trans. Commun. 105-B(2): 151-158 (2022) - [j17]Kosuke Kimura, Masato Yoshida, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa:
Experimental and Numerical Analysis of Ultrahigh-Speed Coherent Nyquist Pulse Transmission with Low-Nonlinearity Dispersion Compensator. IEICE Trans. Commun. 105-B(9): 1014-1022 (2022) - 2021
- [j16]Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka:
Recent progress and challenges toward ultrahigh-speed transmission beyond 10 Tbit/s with optical Nyquist pulses. IEICE Electron. Express 18(7): 20212001 (2021) - 2019
- [j15]Ryoya Hirata, Toshihiko Hirooka, Masato Yoshida, Masataka Nakazawa:
Wavelength-tunable sub-picosecond optical switch over entire C-band using nonlinear optical loop mirror. IEICE Electron. Express 16(23): 20190664 (2019) - 2017
- [j14]Koudai Harako, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa:
A 40 GHz, 770 fs regeneratively mode-locked erbium fiber laser operating at 1.6 µm. IEICE Electron. Express 14(19): 20170829 (2017) - 2016
- [j13]Tamotsu Yajima, Jun Yamamoto, Yusuke Kinoshita, Futoshi Ishii, Toshihiko Hirooka, Masato Yoshida, Masataka Nakazawa:
Fabrication of OH-free, single-mode fiber by using slurry casting and rod-in-tube method. IEICE Electron. Express 13(1): 20151005 (2016) - [j12]Masatoshi Nakao, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa:
A 1.55 µm, 271 fs and 1.07 µm, 294 fs simultaneously mode-locked Er- and Yb-doped fiber laser with a single SWNT/PVA saturable absorber. IEICE Electron. Express 13(14): 20160515 (2016) - 2015
- [j11]Toshihiko Hirooka, Keisuke Kasai, Yixin Wang, Masataka Nakazawa, Masaki Shiraiwa, Yoshinari Awaji, Naoya Wada:
First demonstration of digital coherent transmission in a deployed ROADM network with a 120 Gbit/s polarization-multiplexed 64 QAM signal. IEICE Electron. Express 12(23): 20150884 (2015) - 2014
- [j10]Toshihiko Hirooka, Masataka Nakazawa, Tetsuro Komukai, Toshikazu Sakano:
100 Gbit/s real-time digital coherent transmission over a 32 km legacy multi-mode graded-index fiber. IEICE Electron. Express 11(15): 20140563 (2014) - [j9]Tetsuro Komukai, Hirokazu Kubota
, Toshikazu Sakano, Toshihiko Hirooka, Masataka Nakazawa:
Plug-and-Play Optical Interconnection Using Digital Coherent Technology for Resilient Network Based on Movable and Deployable ICT Resource Unit. IEICE Trans. Commun. 97-B(7): 1334-1341 (2014) - [j8]Tomokazu Kobayashi, Toshihiko Hirooka, Atsushi Hakotani, Ryuta Sato, Keiichi Shirase:
Tool Motion Control Referring to Voxel Information of Removal Volume Voxel Model to Achieve Autonomous Milling Operation. Int. J. Autom. Technol. 8(6): 792-800 (2014) - 2013
- [j7]Toshihiko Hirooka, Tomokazu Kobayashi, Atsushi Hakotani, Ryuta Sato, Keiichi Shirase:
Surface Roughness Control Based on Digital Copy Milling Concept to Achieve Autonomous Milling Operation. Int. J. Autom. Technol. 7(4): 401-409 (2013) - 2011
- [j6]Pengyu Guan, Hans Christian Hansen Mulvad, Yutaro Tomiyama, Toshiyuki Hirano, Toshihiko Hirooka, Masataka Nakazawa:
Single-Channel 1.28 Tbit/s-525 km DQPSK Transmission Using Ultrafast Time-Domain Optical Fourier Transformation and Nonlinear Optical Loop Mirror. IEICE Trans. Commun. 94-B(2): 430-436 (2011) - 2009
- [j5]Kengo Koizumi, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa:
10Gbit/s photonic crystal fiber transmissions with 1.1µm directly-modulated single-mode VCSEL. IEICE Electron. Express 6(22): 1615-1620 (2009) - 2007
- [j4]Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka:
Ultra-Stable Regeneratively Mode-Locked Laser as an Opto-Electronic Microwave Oscillator and Its Application to Optical Metrology. IEICE Trans. Electron. 90-C(2): 443-449 (2007) - 2006
- [j3]Masataka Nakazawa, Toshihiko Hirooka:
ABCD matrix formalism of time-domain optical Fourier transformation for distortion-free pulse transmission. IEICE Electron. Express 3(4): 74-79 (2006) - [j2]Hideaki Hasegawa, Yosuke Oikawa, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa:
10Gb/s transmission over 5km at 850nm using single-mode photonic crystal fiber, single-mode VCSEL, and Si-APD. IEICE Electron. Express 3(6): 109-114 (2006) - [j1]Toshihiko Hirooka, Takashi Kumakura, Kou Osawa, Masataka Nakazawa:
Comparison of 40GHz optical demultiplexers using SMZ switch and EA modulator in 160Gbit/s-500km OTDM transmission. IEICE Electron. Express 3(17): 397-403 (2006)
Conference and Workshop Papers
- 2024
- [c41]Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka:
Mode Division Multiplexed Coherent Optical Transmission in Time Domain by Using Higher-order Hermite-Gaussian Pulses. OFC 2024: 1-3 - [c40]Masato Yoshida, Takaaki Hirai, Shohei Beppu, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa, Yuta Wakayama, Noboru Yoshikane:
New GAWBS Noise Interacting with Longitudinally Propagating Acoustic Waves in Few-mode Fibers. OFC 2024: 1-3 - 2022
- [c39]Aoi Watanabe, Aoto Ishikawa, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa:
10.2 Tbit/s (1.28 Tbit/s/ch x 8 ch) WDM Nyquist Pulse Transmission over 2100 km. OECC/PSC 2022: 1-3 - [c38]Masato Yoshida, Kosuke Kimura, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa:
Demodulation Performance Comparison of 160 Gbaud Coherent Nyquist Pulse Signal with Analog and Digital DEMUX Schemes. OECC/PSC 2022: 1-3 - 2021
- [c37]Takashi Kan, Keisuke Kasai, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa:
Broadband Dynamic Injection-Locking Performance of Fabry-Perot LD and Its Application to Coherent Homodyne Receiver. OFC 2021: 1-3 - [c36]Keisuke Kasai, Taisei Sato, Toshihiko Hirooka, Masato Yoshida, Masataka Nakazawa:
64 Gbit/s, 256 QAM Transmission Through Coherent Optical-Wireless Link at 61 GHz Using Simple and High OSNR Carrier Frequency Converter. OFC 2021: 1-3 - [c35]Kozo Sato, Masato Yoshida, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa:
GAWBS Noise Correlation Between Cores in Four-Core Fiber. OFC 2021: 1-3 - 2020
- [c34]Keisuke Kasai, Toshihiko Hirooka, Masato Yoshida, Masataka Nakazawa:
64 Gbit/s, 256 QAM Coherently-Linked Optical and Wireless Transmission in 61 GHz Band Using Novel Injection-Locked Carrier Frequency Converter. ECOC 2020: 1-3 - [c33]Naoya Takefushi, Masato Yoshida, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa:
Experimental and Theoretical Analyses of GAWBS Phase Noise in Multi-Core Fiber for Digital Coherent Transmission. OFC 2020: 1-3 - [c32]Masato Yoshida, Takashi Kan, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa:
10 Tbit/s QAM Quantum Noise Stream Cipher Coherent Transmission over 160 km. OFC 2020: 1-3 - 2019
- [c31]Masato Yoshida, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa:
Dual-Polarization On-Line 256 and 512 QAM Digital Coherent Transmission. OFC 2019: 1-3 - [c30]Ryoya Hirata, Toshihiko Hirooka, Masato Yoshida, Masataka Nakazawa:
Sub-Picosecond Optical Switch over Entire C-Band by Using Nonlinear Optical Loop Mirror. OECC/PSC 2019: 1-3 - [c29]Naoya Takefushi, Masato Yoshida, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa:
GAWBS Noise Characteristics in Digital Coherent Transmission in Various Optical Fibers. OECC/PSC 2019: 1-3 - [c28]Masato Yoshida, Takashi Kan, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa:
Real-Time 256 QAM Bi-directional Coherent Transmission in Next Generation Mobile Fronthaul. OECC/PSC 2019: 1-3 - 2018
- [c27]Toshihiko Hirooka, Ryoya Hirata, Jianping Wang, Masato Yoshida, Masataka Nakazawa:
Single-Channel 10.2 Tbit/s PDM-DQPSK Nyquist Pulse Transmission over 300 km. ECOC 2018: 1-3 - [c26]Keisuke Kasai, Masato Yoshida, Toshihiko Hirooka, Katsumi Iwatsuki, Masataka Nakazawa:
Backward-Rayleigh-Scattering Suppressed 160 Gbit/s 256 QAM Injection-Locked Bidirectional Coherent Transmission for Next Generation Mobile Fronthaul. ECOC 2018: 1-3 - [c25]Keisuke Kasai, Yixin Wang, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa:
Injection-locked Homodyne Detection for Higher-order QAM Transmission. OFC 2018: 1-3 - [c24]Masataka Nakazawa, Masaki Terayama, Seiji Okamoto, Masato Yoshida, Keisuke Kasai, Toshihiko Hirooka:
Observation of Guided Acoustic-Wave Brillouin Scattering and its Digital Compensation in Coherent QAM Transmission. OFC 2018: 1-3 - [c23]Seiji Okamoto, Masaki Terayama, Masato Yoshida, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa:
Experimental and Numerical Comparison of Probabilistically-Shaped 4096 QAM and Uniformly-Shaped 1024 QAM in All-Raman Amplified 160 km Transmission. OFC 2018: 1-3 - 2017
- [c22]Keisuke Kasai, Toshihiko Hirooka, Masato Yoshida, Masataka Nakazawa, Masaki Shiraiwa, Yoshinari Awaji, Naoya Wada:
Single-carrier 552 Gbit/s, 46 Gbaud 64 QAM Coherent Transmission over 100 km with Co-propagating 10 Gbit/s-OOK Signals Through a Deployed ROADM Network. ECOC 2017: 1-3 - [c21]Keisuke Kasai, Yixin Wang, Masato Yoshida, Toshihiko Hirooka, Katsumi Iwatsuki, Masataka Nakazawa:
80 Gbit/s/ch, 256 QAM Digital Coherent Optical Transmission System with Injection-Locking for Next Generation Mobile Fronthaul Network. ECOC 2017: 1-3 - [c20]Kosuke Kimura, Junpei Nitta, Masato Yoshida, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa:
A New Optical Phase-Locked System Between Ultrashort Pulses for 640 Gbaud Nyquist OTDM Coherent QAM Transmission. ECOC 2017: 1-3 - [c19]Jun Yamamoto, Tamotsu Yajima, Yusuke Kinoshita, Futoshi Ishii, Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa:
Fabrication of multi core fiber by using slurry casting method. OFC 2017: 1-3 - [c18]Masato Yoshida, Junpei Nitta, Kosuke Kimura, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa:
Single-channel 3.84 Tbit/s, 64 QAM coherent Nyquist pulse transmission over 150 km with frequency-stabilized and mode-locked laser. OFC 2017: 1-3 - 2016
- [c17]Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa:
Fused type fan-out device for multi-core fiber based on bundled structure. OFC 2016: 1-3 - [c16]Masato Yoshida, Toshihiko Hirooka, Masataka Nakazawa:
Mode coupling measurement at a splice point between few-mode fibers using a synchronous multi-channel OTDR. OFC 2016: 1-3 - 2015
- [c15]Masato Yoshida, Toshihiko Hirooka, Keisuke Kasai, Masataka Nakazawa:
QAM quantum noise stream cipher using digital coherent optical transmission. ACSSC 2015: 1007-1011 - [c14]Masato Yoshida, Toshihiko Hirooka, Keisuke Kasai, Masataka Nakazawa:
Real-time adaptive 4-64 QAM, 20-60 Gbit/s quantum noise stream cipher transmission over 320 km with FPGA-based transmitter and receiver. ECOC 2015: 1-3 - [c13]David Odeke Otuya, Koudai Harako, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa:
Single-channel 1.92 Tbit/s, 64 QAM coherent orthogonal TDM transmission of 160 Gbaud optical Nyquist pulses with 10.6 bit/s/Hz spectral efficiency. OFC 2015: 1-3 - [c12]Toshikazu Sakano, Tetsuro Komukai, Atsushi Takahara, Toshihiko Hirooka, Masataka Nakazawa:
Ad-hoc photonic network based on movable and deployable ICT resource unit to meet rapidly changing service demands. OFC 2015: 1-3 - [c11]Masato Yoshida, Toshihiko Hirooka, Keisuke Kasai, Masataka Nakazawa:
Real-time 10 Gbit/s-16 QAM quantum stream cipher transmission over 320 km with FPGA-based transmitter and receiver. OFC 2015: 1-3 - 2014
- [c10]Koudai Harako, David Odeke Otuya, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa:
Novel ultrafast TDM demultiplexing scheme using orthogonality in coherent Nyquist pulses. ECOC 2014: 1-3 - [c9]David Odeke Otuya, Koudai Harako, Keisuke Kasai, Toshihiko Hirooka, Masataka Nakazawa:
A single-channel 960 Gbit/s 64 QAM orthogonal TDM transmission with a spectral efficiency of 10.0 bit/s/Hz using coherent Nyquist pulses. ECOC 2014: 1-3 - [c8]Tamotsu Yajima, Jun Yamamoto, Yusuke Kinoshita, Futoshi Ishii, Toshihiko Hirooka, Masato Yoshida, Masataka Nakazawa:
OH-free low loss single-mode fibre fabricated by slurry casting / rod-in-tube method. ECOC 2014: 1-3 - [c7]Masato Yoshida, Toshihiko Hirooka, Keisuke Kasai, Masataka Nakazawa:
Real-time adaptive 4-64 QAM coherent optical transmission over 320 km with FPGA-based transmitter and receiver. ECOC 2014: 1-3 - [c6]Toshihiko Hirooka, Masataka Nakazawa, Tetsuro Komukai, Toshikazu Sakano:
100 Gbit/s DP-QPSK transmission over a 32 km legacy multi-mode GI fiber using a real-time digital coherent transceiver. OFC 2014: 1-3 - [c5]Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka:
Measurement of mode coupling distribution along a few-mode fiber using a synchronous multi-channel OTDR. OFC 2014: 1-3 - [c4]David Odeke Otuya, Keisuke Kasai, Toshihiko Hirooka, Masato Yoshida, Masataka Nakazawa:
1.92 Tbit/s, 64 QAM coherent Nyquist pulse transmission over 150 km with a spectral efficiency of 7.5 bit/s/Hz. OFC 2014: 1-3 - [c3]Daiki Seya, Koudai Harako, Toshihiko Hirooka, Masataka Nakazawa:
All-optical high-performance demultiplexing using optical Nyquist pulse sampling. OFC 2014: 1-3 - 2013
- [c2]Koudai Harako, Peng Ruan, Toshihiko Hirooka, Masataka Nakazawa:
Large PMD tolerant 1.28 Tbit/s/ch transmission over 525 km with 640 Gbaud optical Nyquist pulses. OFC/NFOEC 2013: 1-3 - [c1]David Odeke Otuya, Keisuke Kasai, Toshihiko Hirooka, Masato Yoshida, Masataka Nakazawa, Tokutaka Hara, Satoshi Oikawa:
A single-channel, 1.6 Tbit/s 32 QAM coherent pulse transmission over 150 km with RZ-CW conversion and FDE techniques. OFC/NFOEC 2013: 1-3
Coauthor Index
[j19] [j18] [j17] [j16] [j15] [j14] [j13] [j12] [j11] [j10] [j9] [j6] [j5] [j4] [j3] [j2] [j1] [c41] [c40] [c39] [c38] [c37] [c36] [c35] [c34] [c33] [c32] [c31] [c30] [c29] [c28] [c27] [c26] [c25] [c24] [c23] [c22] [c21] [c20] [c19] [c18] [c17] [c16] [c15] [c14] [c13] [c12] [c11] [c10] [c9] [c8] [c7] [c6] [c5] [c4] [c3] [c2] [c1]
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