Koudai Harako

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.

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

Masataka Nakazawa, Toshihiko Hirooka, Keisuke Kasai, 2015, 2015 Optical Fiber Communications Conference and Exhibition (OFC).

All-optical high-performance demultiplexing using optical Nyquist pulse sampling

Masataka Nakazawa, Toshihiko Hirooka, Koudai Harako, 2014, OFC.

Roll-off factor dependence of Nyquist pulse transmission.

Masataka Nakazawa, Toshihiko Hirooka, Daiki Suzuki, 2016, Optics express.

2.56 Tbit/s/ch polarization-multiplexed DQPSK transmission over 300 km using time-domain optical fourier transformation

Masataka Nakazawa, Toshihiko Hirooka, Koudai Harako, 2011, 2011 37th European Conference and Exhibition on Optical Communication.

Ultrafast Nyquist OTDM demultiplexing using optical Nyquist pulse sampling in an all-optical nonlinear switch.

Masataka Nakazawa, Toshihiko Hirooka, Daiki Suzuki, 2015, Optics express.

640 Gbaud (1.28 Tbit/s/ch) optical Nyquist pulse transmission over 525 km with substantial PMD tolerance.

Masataka Nakazawa, Toshihiko Hirooka, Koudai Harako, 2013, Optics express.

High-performance TDM demultiplexing of coherent Nyquist pulses using time-domain orthogonality.

Masataka Nakazawa, Toshihiko Hirooka, Keisuke Kasai, 2014, Optics express.

Novel ultrafast TDM demultiplexing scheme using orthogonality in coherent Nyquist pulses

Masataka Nakazawa, Toshihiko Hirooka, Keisuke Kasai, 2014, 2014 The European Conference on Optical Communication (ECOC).

Single-channel 5.12 Tbit/s (1.28 Tbaud) DQPSK transmission over 300 km using non-coherent Nyquist pulses.

Masataka Nakazawa, Toshihiko Hirooka, Daiki Suzuki, 2016, Optics express.