Title :
Digital coherent superposition for performance improvement of spatially multiplexed 676-Gb/s OFDM-16QAM superchannels
Author :
Liu, Xindong ; Chandrasekhar, S. ; Gnauck, A.H. ; Winzer, P.J. ; Randel, S. ; Corteselli, S. ; Zhu, Benpeng ; Taunay, Thierry F. ; Fishteyn, M.
Author_Institution :
Bell Labs., Alcatel-Lucent, Holmdel, NJ, USA
Abstract :
We demonstrate the use of digital coherent superposition to improve the performance of space-division-multiplexed (SDM) 676-Gb/s OFDM-16QAM superchannels, achieving ~4 dB improvement in OSNR by using two SDM copies and 1075-km (14×76.8km) transmission over a seven-core-fiber with an effective aggregate spectral efficiency of 23.7 b/s/Hz.
Keywords :
OFDM modulation; optical communication; quadrature amplitude modulation; space division multiplexing; telecommunication channels; OSNR; SDM; bit rate 676 Gbit/s; digital coherent superposition; seven-core-fiber; space-division-multiplexed OFDM-16QAM superchannels; spatially multiplexed OFDM-16QAM superchannels; Adaptive optics; Optical fibers; Optical noise; Optical polarization; Optical switches; Signal to noise ratio;
Conference_Titel :
Optical Communications (ECOC), 2012 38th European Conference and Exhibition on
Conference_Location :
Amsterdam
