Open Access256 Tbit/s/ch (640 Gbaud) polarization-multiplexed DQPSK non-coherent Nyquist pulse transmission over 525 km
Author(s) -
Koudai Harako,
Daiki Seya,
Daiki Suzuki,
Toshihiko Hirooka,
Masataka Nakazawa
Publication year - 2015
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.030801
Subject(s) - optics , polarization mode dispersion , physics , multiplexing , phase shift keying , nyquist–shannon sampling theorem , polarization (electrochemistry) , pulse shaping , dispersion (optics) , bit error rate , channel (broadcasting) , telecommunications , laser , electronic engineering , chemistry , computer science , engineering
We demonstrate a single-channel 2.56 Tbit/s polarization-multiplexed DQPSK transmission using 640 Gbaud non-coherent optical Nyquist pulses. By virtue of a large tolerance to polarization-mode dispersion, the detrimental depolarization-induced crosstalk was reduced by 3.8 dB compared with RZ pulses. As a result, the transmission distance was substantially extended to 525 km compared with the distance of 300 km obtained with a Gaussian pulse.