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Optics Express|November 13, 2020
Injection-locked 256 QAM WDM coherent transmissions in the C- and L-bandsTakashi Kan, Keisuke Kasai, Masato Yoshida, 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 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.
Optics Express|October 17, 2014
Single-channel 1.92 Tbit/s, Pol-Mux-64 QAM coherent Nyquist pulse transmission over 150 km with a spectral efficiency of 7.5 bit/s/HzDavid Odeke Otuya, Keisuke Kasai, Masato Yoshida, et al.
Optics Express|November 13, 2015
448 Gbit/s, 32 Gbaud 128 QAM coherent transmission over 150 km with a potential spectral efficiency of 10.7 bit/s/HzKeisuke Kasai, Yixin Wang, David Odeke Otuya, et al.
Optics Express|January 22, 2015
High-performance TDM demultiplexing of coherent Nyquist pulses using time-domain orthogonalityKoudai Harako, David Odeke Otuya, Keisuke Kasai, et al.
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