Title :
400-Gb/s PDM-4PAM WDM System Using a Monolithic 2×4 VCSEL Array and Coherent Detection
Author :
Chongjin Xie ; Spiga, Silvia ; Po Dong ; Winzer, Peter ; Bergmann, Michael ; Kögel, Benjamin ; Neumeyr, Christian ; Amann, Markus-Christian
Author_Institution :
Bell Labs., Alcatel-Lucent, Holmdel, NJ, USA
Abstract :
We generate a 400-Gb/s line rate signal using a directly modulated 2 × 4 monolithic vertical-cavity-surface-emitting-laser array. The signal consists of four wavelength-division-multiplexed channels at a 100-GHz channel spacing and each channel carries a 100-Gb/s polarization-division-multiplexed four-level pulse-amplitude-modulation signal. Using digital coherent detection, we successfully transmit the 400-Gb/s signal over 5 × 80-km standard-single-mode-fiber spans with erbium-doped fiber amplifiers at 20% overhead soft-decision forward-error correction, achieving a net information bit rate of 333 Gb/s.
Keywords :
amplitude modulation; channel spacing; error statistics; forward error correction; optical communication equipment; optical fibre communication; pulse amplitude modulation; semiconductor laser arrays; surface emitting lasers; wavelength division multiplexing; PDM-4PAM WDM; bit rate 100 Gbit/s; bit rate 333 Gbit/s; bit rate 400 Gbit/s; channel spacing; digital coherent detection; direct modulation; erbium-doped fiber amplifiers; monolithic 2×4 VCSEL array; monolithic vertical-cavity-surface-emitting-laser array; polarization-division-multiplexing; pulse-amplitude-modulation; soft-decision forward-error correction; wavelength-division-multiplexed channels; Arrays; Coherence; Optical modulation; Optical polarization; Vertical cavity surface emitting lasers; Wavelength division multiplexing; Coherent detection; Optical communications; VCSLEs; coherent detection; optical communications; pulse-amplitude modulation; vertical cavity-surface-emitting lasers;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2014.2363017
