title: Analysis of dispersion-enhanced phase noise in CO-OFDM systems with RF-pilot phase compensation.
abstract: We show that dispersion-enhanced phase noise (DEPN) induces performance degradations in both conventional CO-OFDM systems and reduced-guard-interval (RGI) CO-OFDM systems employing RF-pilot phase compensation. After analytically studying DEPN, we show that DEPN causes a 2 to 6 dB optical signal-to-noise ratio (OSNR) penalty at transmission distances of 3200 km and 1600 km for 28 and 56 Gbaud QPSK systems, respectively, using lasers with 2 MHz linewidths. At such distances, DEPN reduces the linewidth tolerance at 1 dB OSNR penalty to 250-500 kHz while in the back-to-back case the tolerance is 1-3 MHz for both systems. When fiber nonlinearity is included, we observe similar performance degradations.
authors: Department of Electrical and Computer Engineering, McGill University, Montreal, QC, H3A 2A7, Canada. qunbi.zhuge@mail.mcgill.ca
authors: Qunbi
authors: Q
authors: Zhuge
authors: Mohamed
authors: M
authors: Morsy-Osman
authors: David V
authors: DV
authors: Plant
mesh_terms: D016477:Artifacts; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008027:Light; D008962:Models, Theoretical; D055096:Optical Devices; D012542:Scattering, Radiation; D013685:Telecommunications / Q000295:instrumentation*