Title :
256-QAM (64 Gb/s) Coherent Optical Transmission Over 160 km With an Optical Bandwidth of 5.4 GHz
Author :
Nakazawa, Masataka ; Okamoto, Seiji ; Omiya, Tatsunori ; Kasai, Keisuke ; Yoshida, Masato
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
Abstract :
We report a polarization-multiplexed (Pol-Mux) 4-Gsymbol/s 256 quadrature amplitude modulation (QAM) coherent optical transmission over 160 km. A 64-Gb/s data signal was successfully transmitted with an optical bandwidth of 5.4 GHz. We also describe a Pol-Mux, 10-Gsymbol/s, 128- and 64-QAM (140 and 120 Gb/s) transmission over 150 km.
Keywords :
light coherence; light polarisation; multiplexing; optical communication equipment; optical fibre communication; optical modulation; quadrature amplitude modulation; Pol-Mux; QAM; bandwidth 5.4 GHz; bit rate 120 Gbit/s; bit rate 140 Gbit/s; bit rate 64 Gbit/s; coherent optical transmission; polarization multiplexing; quadrature amplitude modulation; standard single-mode fiber; Coherent transmission; frequency-stabilized laser; optical phase-locked loop (PLL); quadrature amplitude modulation (QAM); spectral efficiency (SE);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2037238
