Title :
Comparison of RZ and NRZ formats in 112-Gb/s PDM-QPSK long haul coherent transmission systems
Author :
Xie, Chongjin ; Raybon, Greg ; Chandrasekhar, S.
Author_Institution :
Bell Labs., Alcatel-Lucent, Holmdel, NJ, USA
Abstract :
We show that 112-Gb/s PDM-QPSK coherent transmission systems with RZ pulse shape have better tolerance to ROADM filtering than NRZ, and time-interleaved RZ-PDM-QPSK outperform NRZ-PDM-QPSK in nonlinear transmission even with tight filtering.
Keywords :
quadrature phase shift keying; NRZ format; PDM-QPSK coherent transmission system; ROADM filtering; RZ pulse shape; bit rate 112 Gbit/s; nonlinear transmission; Filtering; Nonlinear optics; Optical add-drop multiplexers; Optical fibers; Optical filters; Phase shift keying;
Conference_Titel :
Optical Fiber Communication Conference and Exposition (OFC/NFOEC), 2011 and the National Fiber Optic Engineers Conference
Conference_Location :
Los Angeles, CA
Print_ISBN :
978-1-4577-0213-6
