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Optics Express|September 15, 2015
1024 QAM, 7-core (60 Gbit/s x 7) fiber transmission over 55 km with an aggregate potential spectral efficiency of 109 bit/s/HzMasato Yoshida, Shohei Beppu, Keisuke Kasai, et al.
Optics Express|September 15, 2015
Ultrafast Nyquist OTDM demultiplexing using optical Nyquist pulse sampling in an all-optical nonlinear switchToshihiko Hirooka, Daiki Seya, Koudai Harako, et al.
Optics Express|March 4, 2020
Theoretical and experimental analyses of GAWBS phase noise in various optical fibers for digital coherent transmissionNaoya Takefushi, Masato Yoshida, Keisuke Kasai, et al.
Optics Express|November 13, 2015
80 Gbit/s, 256 QAM coherent transmission over 150 km with an injection-locked homodyne receiverKeisuke Kasai, Yixin Wang, Shohei Beppu, et al.
Optics Letters|May 24, 2005
Linewidth and relative intensity noise measurements of longitudinal modes in ultrahigh-speed mode-locked laser diodesKentaro Haneda, Masato Yoshida, Masataka Nakazawa, et al.
Optics Express|December 25, 2015
2.56 Tbit/s/ch (640 Gbaud) polarization-multiplexed DQPSK non-coherent Nyquist pulse transmission over 525 kmKoudai Harako, Daiki Seya, Daiki Suzuki, et al.
Optics Express|November 13, 2020
Precise measurements and their analysis of GAWBS-induced depolarization noise in various optical fibers for digital coherent transmissionMasato Yoshida, Naoya Takefushi, Keisuke Kasai, et al.
Optics Express|April 27, 2022
Broadband injection-locked homodyne receiver for digital coherent transmission using a low Q Fabry-Perot LDKeisuke Kasai, Takashi Kan, Masato Yoshida, et al.
Optics Express|August 6, 2020
GAWBS phase noise characteristics in multi-core fibers for digital coherent transmissionNaoya Takefushi, Masato Yoshida, Keisuke Kasai, et al.
Optics Express|October 10, 2013
A single-channel 1.92 Tbit/s, 64 QAM coherent optical pulse transmission over 150 km using frequency-domain equalizationDavid Odeke Otuya, Keisuke Kasai, Masato Yoshida, et al.
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