Single-channel 384 Tbit/s, 64 QAM coherent Nyquist pulse transmission over 150 km with a spectral efficiency of 106 bit/s/Hz | Zendy

Junpei Nitta | Zendy; Masato Yoshida | Zendy; Kosuke Kimura | Zendy; Keisuke Kasai | Zendy; Toshihiko Hirooka | Zendy; Masataka Nakazawa | Zendy

Open Access

Single-channel 384 Tbit/s, 64 QAM coherent Nyquist pulse transmission over 150 km with a spectral efficiency of 106 bit/s/Hz

Author(s) -

Junpei Nitta,

Masato Yoshida,

Kosuke Kimura,

Keisuke Kasai,

Toshihiko Hirooka,

Masataka Nakazawa

Publication year - 2017

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.25.015199

Subject(s) - optics , bit error rate , transmission (telecommunications) , pulse shaping , nyquist–shannon sampling theorem , polarization mode dispersion , terabit , quadrature amplitude modulation , physics , spectral efficiency , channel (broadcasting) , telecommunications , computer science , laser , wavelength division multiplexing , dispersion (optics) , wavelength , computer vision

We report a polarization-multiplexed 320 Gbaud, 64 QAM coherent Nyquist pulse transmission with a frequency-stabilized mode-locked laser and a modified digital back-propagation method for pulse transmission. Using a combination consisting of a mode-locked laser and a pulse shaper, we obtained a Nyquist pulse with a high OSNR of 51 dB. We achieved error free operation under a back-to-back condition with the OSNR improvement. By developing a new digital back-propagation method for pulse propagation, we achieved a bit error rate below the 7% forward error correction limit of 2x10 -3 for all the tributaries of the OTDM signal data after a 150 km transmission. As a result, single-channel 3.84 Tbit/s data were successfully transmitted over 150 km with a spectral efficiency of 10.6 bit/s/Hz.

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