Masato Yoshida

Masataka Nakazawa, Masato Yoshida, Keisuke Kasai, 2008, OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference.

Measurement of mode coupling distribution along a few-mode fiber using a synchronous multi-channel OTDR

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2014, OFC 2014.

Nondestructive measurement of mode couplings along a multi-core fiber using a synchronous multi-channel OTDR.

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2012, Optics express.

1024 QAM, 7-core (60 Gbit/s x 7) fiber transmission over 55 km with an aggregate potential spectral efficiency of 109 bit/s/Hz.

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2015, Optics express.

1024 QAM (60 Gbit/s) single-carrier coherent optical transmission over 150 km.

Masataka Nakazawa, Masato Yoshida, Kazushi Toyoda, 2012, Optics express.

320 Gbit/s, 256 QAM LD-based coherent transmission over 160 km with an injection-locked homodyne detection technique

M. Nakazawa, Masato Yoshida, K. Kasai, 2014, 2016 21st OptoElectronics and Communications Conference (OECC) held jointly with 2016 International Conference on Photonics in Switching (PS).

A single-channel, 1.6 Tbit/s 32 QAM coherent pulse transmission over 150 km with RZ-CW conversion and FDE techniques

M. Nakazawa, Masato Yoshida, K. Kasai, 2013, 2013 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference (OFC/NFOEC).

A single-channel 1.92 Tbit/s, 64 QAM coherent optical pulse transmission over 150 km using frequency-domain equalization.

M. Nakazawa, Masato Yoshida, K. Kasai, 2013, Optics express.

Low-loss and reflection-free fused type fan-out device for 7-core fiber based on a bundled structure.

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2017, Optics express.

10.16-Peta-B/s Dense SDM/WDM Transmission Over 6-Mode 19-Core Fiber Across the C+L Band

M. Nakazawa, T. Tsuritani, Masato Yoshida, 2018, Journal of Lightwave Technology.

24 Gbit/s, 64 QAM-OFDM coherent transmission with a bandwidth of 2.5 GHz

M. Nakazawa, Masato Yoshida, Hiroki Goto, 2009, 2009 35th European Conference on Optical Communication.

160 Gbit/s-300 km single-channel transmission in the 1.1 μm band with a precise GVD and slope compensation.

M. Nakazawa, Masato Yoshida, T. Hirooka, 2013, Optics express.

A single-channel 1.28 Tbit/s-58 km transmission in the 1.1 μm band with wideband GVD and slope compensation.

M. Nakazawa, Masato Yoshida, T. Hirooka, 2013, Optics express.

A 10 GHz 2.5 ps regeneratively mode-locked Yb fiber laser in the 1.1 μm band

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2011, CLEO: 2011 - Laser Science to Photonic Applications.

Single-channel 15.3 Tbit/s, 64 QAM coherent Nyquist pulse transmission over 150 km with a spectral efficiency of 8.3 bit/s/Hz.

M. Nakazawa, Masato Yoshida, K. Kasai, 2019, Optics express.

Single-Channel 7.68 Tbit/s, 64 QAM Coherent Nyquist Pulse Transmission over 150 km with a Spectral Efficiency of 9.7 bit/s/Hz

M. Nakazawa, Masato Yoshida, K. Kasai, 2018, 2018 23rd Opto-Electronics and Communications Conference (OECC).

Single-channel 3.84 Tbit/s, 64 QAM coherent Nyquist pulse transmission over 150 km with a spectral efficiency of 10.6 bit/s/Hz.

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2014, Optics express.

A 40 GHz , 770 fs regeneratively mode-locked erbium fi ber laser operating at 1

M. Nakazawa, Masato Yoshida, T. Hirooka, 2017 .

1.55 μm hydrogen cyanide optical frequency-stabilized and 10 GHz repetition-rate-stabilized mode-locked fiber laser.

Masataka Nakazawa, Masato Yoshida, Keisuke Kasai, 2016, Optics express.

A 440 fs, 9.2 GHz hybrid mode-locked erbium fiber laser with a combination of higher-order solitons and a SESAM saturable absorber

M. Nakazawa, Masato Yoshida, T. Hirooka, 2016, 2016 Conference on Lasers and Electro-Optics (CLEO).

A 0.95 ps, 10 GHz, 60 mW HCN frequency-stabilized and mode-locked fiber laser at 1.55 μm

M. Nakazawa, Masato Yoshida, K. Kasai, 2016, 2016 Conference on Lasers and Electro-Optics (CLEO).

440 fs, 9.2 GHz regeneratively mode-locked erbium fiber laser with a combination of higher-order solitons and a SESAM saturable absorber.

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2016, Optics express.

Generation of 10 W, 100 fs, 10 GHz pulse train using high power EDFA-MOPA system with cascaded Raman pumping

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2015, 2015 Conference on Lasers and Electro-Optics (CLEO).

A 380 fs, 40 GHz mode-locked erbium fiber laser with an MQW nonlinear PM/AM modulator using the pockels effect and the QCSE

M. Nakazawa, Masato Yoshida, K. Tsuzuki, 2014, 2014 Conference on Lasers and Electro-Optics (CLEO) - Laser Science to Photonic Applications.

Optical frequency-tunable Cs atomic clock with a mode-hop-free fiber laser

M. Nakazawa, Masato Yoshida, T. Morisaki, 2010, CLEO/QELS: 2010 Laser Science to Photonic Applications.

Scheme for independently stabilizing the repetition rate and optical frequency of a laser using a regenerative mode-locking technique.

M. Nakazawa, Masato Yoshida, 2008, Optics letters.

New scheme for independently stabilizing the repetition rate and optical frequency of a laser using a regenerative mode-locking technique

Masataka Nakazawa, Masato Yoshida, M. Nakazawa, 2008 .

Mode-locked laser-type optical atomic clock with an optically pumped Cs gas cell.

Masataka Nakazawa, Masato Yoshida, Ken Hagimoto, 2007, Optics letters.

Optimization of a 40 GHz regeneratively and harmonically mode-locked fiber laser under PLL operation and its longitudinal mode characteristics

M. Nakazawa, Masato Yoshida, T. Yaguchi, 2005 .

Precise and Wideband Compensation of Inter-Channel Cross-Phase Modulation Noise in WDM Coherent Transmission Using Injection Locking

M. Nakazawa, Masato Yoshida, K. Kasai, 2020, 2020 Opto-Electronics and Communications Conference (OECC).

Numerical Investigation of Mutually Injection-Locked Semiconductor Lasers for Direct IQ-Signal Generation

Hiroshi Yasaka, Masato Yoshida, Nobuhide Yokota, 2019, IEEE Photonics Journal.

A single-channel 1.92 Tbit/s, 64 QAM coherent pulse OTDM transmission over 150 km

M. Nakazawa, Masato Yoshida, K. Kasai, 2013, 2013 18th OptoElectronics and Communications Conference held jointly with 2013 International Conference on Photonics in Switching (OECC/PS).

256 QAM (64 Gbit/s) coherent optical transmission over 160 km with an optical bandwidth of 5.4 GHz

Masataka Nakazawa, Masato Yoshida, Keisuke Kasai, 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

20 Msymbol/s, 128 QAM Coherent Optical Transmission over 500 km Using Heterodyne Detection with Frequency-stabilized Laser

Masataka Nakazawa, Masato Yoshida, Keisuke Kasai, 2006, 2006 European Conference on Optical Communications.

20 msymbol/s, 64 and 128 QAM coherent optical transmission over 525km using heterodyne detection with frequency-stabilised laser

Masataka Nakazawa, Masato Yoshida, Keisuke Kasai, 2006 .

PMD measurement based on delayed self-heterodyne OFDR and experimental comparison with ITU-T round robin measurements

Yoshinori Namihira, Masato Yoshida, N. Zou, 2002 .

A new technique for measuring dispersion of optical fibers using a frequency-shifted feedback fiber laser. part I: Measurement of group velocity dispersion

Masato Yoshida, Hiromasa Ito, Koichiro Nakamura, 2002 .

Numerical investigations into a fiber laser based dielectric reverse dual-grating accelerator

M. Uesaka, Masato Yoshida, K. Koyama, 2014 .

frequency-stabilized fiber laser

M. Nakazawa, Masato Yoshida, K. Kasai, 2006 .

1.92 Tbit/s, 64 QAM coherent Nyquist pulse transmission over 150 km with a spectral efficiency of 7.5 bit/s/Hz

Masataka Nakazawa, Toshihiko Hirooka, Keisuke Kasai, 2014, OFC 2014.

Performance and operation results of the RF systems at the KEK B-Factory

Masato Yoshida, M. Nishiwaki, K. Hara, 2013 .

A 40 GHz, 770 fs regeneratively mode-locked erbium fiber laser operating at 1.6 µm

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2017, IEICE Electron. Express.

A New Optical Phase-Locked System Between Ultrashort Pulses for 640 Gbaud Nyquist OTDM Coherent QAM Transmission

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2017, 2017 European Conference on Optical Communication (ECOC).

The Nyquist laser

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2014 .

C 2 H 2 absolutely optical frequency-stabilized and 40 GHz repetition-rate-stabilized, regeneratively mode-locked picosecond erbium fiber laser at 1.53 µm

M. Nakazawa, Masato Yoshida, K. Kasai, 2009 .

C2H2 absolutely optical frequency-stabilized and 40 GHz repetition-rate-stabilized, regeneratively mode-locked picosecond erbium fiber laser at 1.53 µm

Masataka Nakazawa, Masato Yoshida, Keisuke Kasai, 2008, 2009 Conference on Lasers and Electro-Optics and 2009 Conference on Quantum electronics and Laser Science Conference.

A 40 GHz Regeneratively and Harmonically Mode-Locked Erbium-Doped Fiber Laser and Its Longitudinal-Mode Characteristics

Masataka Nakazawa, Masato Yoshida, Taro Yaguchi, 2004 .

Performance improvement of an acetylene (C2H2) frequency-stabilized fiber laser

Masataka Nakazawa, Masato Yoshida, Keisuke Kasai, 2006, IEICE Electron. Express.

Application of M-type cathodes to high-power cw klystrons

Masato Yoshida, S. Isagawa, K. Ohya, 1999 .

Achievements of KEKB

Noboru Yamamoto, Toshihiro Mimashi, Naoko Iida, 2013 .

Performance of KEKB with crab cavities

Toshihiro Mimashi, Naoko Iida, Norihito Ohuchi, 2008 .

Optical Fiber Transmission of Standard Signals Using Optical Combs

M. Nakazawa, Masato Yoshida, T. Hirooka, 2007 .

An 11.6 W output, 6 kHz linewidth, single-polarization EDFA-MOPA system with a (13)C(2)H(2) frequency stabilized fiber laser.

M. Nakazawa, Masato Yoshida, K. Kasai, 2015, Optics express.

Polymer saturable absorber materials in the 1.5 microm band using poly-methyl-methacrylate and polystyrene with single-wall carbon nanotubes and their application to a femtosecond laser.

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2006, Optics letters.

Positron separators in Superomega muon beamline at J-PARC

Takashi U. Ito, Y. Makida, A. Yamamoto, 2013 .

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

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2016, IEICE Electron. Express.

A 31 mW, 280 fs passively mode-locked fiber soliton laser using a high heat-resistant SWNT/P3HT saturable absorber coated with siloxane.

M. Nakazawa, Masato Yoshida, J. Tsukamoto, 2012, Optics express.

GAWBS phase noise characteristics in multi-core fibers for digital coherent transmission.

M. Nakazawa, Masato Yoshida, K. Kasai, 2020, Optics Express.

GAWBS Noise in Digital Coherent Transmission

M. Nakazawa, Masato Yoshida, T. Hirooka, 2023, Journal of Lightwave Technology.

Progress of SuperKEKB

S. Michizono, T. Miura, T. Ishibashi, 2015 .

Commissioning of KEKB

T. Miura, O. Tajima, S. Uno, 2003 .

An acetylene (13 C2H2) stabilized single‐polarization fiber laser

M. Nakazawa, Masato Yoshida, K. Kasai, 2006 .

Fused type fan-out device for multi-core fiber based on bundled structure

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2016, 2016 Optical Fiber Communications Conference and Exhibition (OFC).

Injection-locked 256 QAM WDM coherent transmissions in the C- and L-bands.

M. Nakazawa, Masato Yoshida, K. Kasai, 2020, Optics express.

Linewidth and relative intensity noise measurements of longitudinal modes in ultrahigh-speed mode-locked laser diodes.

Yoh Ogawa, Hiroyuki Yokoyama, Masataka Nakazawa, 2005, Optics letters.

Detailed comparison between mode couplings along multi-core fibers and structural irregularities using a synchronous multi-channel OTDR system with a high dynamic range.

Ryuichi Sugizaki, Masataka Nakazawa, Masato Yoshida, 2013, Optics express.

Novel measurement method of PMD in single-mode fiber based on optical frequency domain reflectometry technique

Nianyu Zou, Hiromasa Ito, Masato Yoshida, 2001, SPIE/OSA/IEEE Asia Communications and Photonics.

Average atmosphere temperature measurement by a frequency-shifted feedback laser

Hiromasa Ito, Takefumi Hara, Masato Yoshida, 2001, SPIE Asia-Pacific Remote Sensing.

256 QAM Digital Coherent Optical Transmission Using Raman Amplifiers

Masataka Nakazawa, Masato Yoshida, Keisuke Kasai, 2011, IEICE Trans. Commun..

10 Tbit/s QAM Quantum Noise Stream Cipher Coherent Transmission Over 160 Km

Masataka Nakazawa, Toshihiko Hirooka, Keisuke Kasai, 2020, Journal of Lightwave Technology.

QAM quantum stream cipher using digital coherent optical transmission.

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2014, Optics express.

QAM Quantum Noise Stream Cipher Transmission Over 100 km With Continuous Variable Quantum Key Distribution

Ryo Namiki, Masato Yoshida, Toshihiko Hirooka, 2017, IEEE Journal of Quantum Electronics.

10 Tbit/s QAM Quantum Noise Stream Cipher Coherent Transmission over 160 km

Masataka Nakazawa, Toshihiko Hirooka, Keisuke Kasai, 2020, 2020 Optical Fiber Communications Conference and Exhibition (OFC).

Dual-Polarization On-Line 256 and 512 QAM Digital Coherent Transmission

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2019, 2019 Optical Fiber Communications Conference and Exhibition (OFC).

Adaptive 4~64 QAM real-time coherent optical transmission over 320 km with FPGA-based transmitter and receiver.

Masataka Nakazawa, Masato Yoshida, Toshihiko Hirooka, 2014, Optics express.

10 Channel WDM 80 Gbit/s/ch, 256 QAM Bi-Directional Coherent Transmission for a High Capacity Next-Generation Mobile Fronthaul

M. Nakazawa, Masato Yoshida, K. Kasai, 2021, Journal of Lightwave Technology.

KEKB Accelerator Performance and Operation Results of the RF Systems for the KEK B-Factory

Masato Yoshida, M. Nishiwaki, K. Hara, 2013 .

295 mW output, frequency-stabilized erbium silica fiber laser with a linewidth of 5 kHz and a RIN of -120 dB/Hz.

M. Nakazawa, Masato Yoshida, K. Kasai, 2016, Optics express.

64 Gbit/s, 256 QAM Coherently-Linked Optical and Wireless Transmission in 61 GHz Band Using Novel Injection-Locked Carrier Frequency Converter

M. Nakazawa, Masato Yoshida, K. Kasai, 2020, 2020 European Conference on Optical Communications (ECOC).

Optical and Wireless Linked Fully Coherent Access System toward Next Generation RAN

M. Nakazawa, Masato Yoshida, K. Kasai, 2022 .