Title :
Transmission of Mixed 224-Gb/s and 112-Gb/s PDM-QPSK at 50-GHz Channel Spacing Over 1200-km Dispersion-Managed LEAF® Spans and Three ROADMs
Author :
Xie, Chongjin ; Raybon, Gregory ; Winzer, Peter J.
Author_Institution :
Bell Labs., Alcatel-Lucent, Holmdel, NJ, USA
Abstract :
By using asymmetric interleavers, carrier-suppressed polarization-division-multiplexed quadrature-phase-shift-keying (CSRZ-PDM-QPSK), and coherent detection, we successfully transmit a mix of 224-Gb/s and 112-Gb/s PDM-QPSK channels at a 50-GHz channel spacing and 3-b/s/Hz spectral efficiency over 1200-km dispersion-managed LEAF® spans with three ROADMs and over 2000 km without ROADMs.
Keywords :
channel spacing; interleaved codes; multiplexing; optical fibre communication; optical fibre dispersion; optical modulation; quadrature phase shift keying; CSRZ-PDM-QPSK; PDM-QPSK; ROADM; asymmetric interleavers; bit rate 112 Gbit/s; bit rate 224 Gbit/s; carrier-suppressed polarization-division-multiplexed quadrature-phase-shift-keying; channel spacing; coherent detection; dispersion-managed LEAF spans; distance 1200 km; frequency 50 GHz; spectral efficiency; Bandwidth; Optical add-drop multiplexers; Optical fiber amplifiers; Optical fiber dispersion; Phase shift keying; Stimulated emission; Coherent detection; ROADM; fiber nonlinearities; filtering; modulation formats; optical communications;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2011.2176313
