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Impact of phase to amplitude noise conversion in coherent optical systems with digital dispersion compensation

Fatadin, I; Savory, SJ; (2010) Impact of phase to amplitude noise conversion in coherent optical systems with digital dispersion compensation. OPT EXPRESS , 18 (15) 16273 - 16278. Gold open access

Abstract

The impact of phase to amplitude noise conversion for QPSK, 16-QAM, and 64-QAM coherent optical systems are investigated with electronically-compensated chromatic dispersion (CD). The electronic equalizer is shown to convert the phase noise from the local oscillator (LO) to amplitude noise, limiting the amount of CD that can ideally be compensated digitally. The simulation results demonstrate that the performance of coherent systems can significantly be degraded with digitally compensated CD and LO phase noise. The maximum tolerable LO linewidth is also investigated for the different modulation formats and found to become increasingly stringent for longer transmission distance and higher symbol rate. (C) 2010 Optical Society of America

Type:Article
Title:Impact of phase to amplitude noise conversion in coherent optical systems with digital dispersion compensation
Open access status:An open access publication
Publisher version:http://www.opticsexpress.org
Keywords:FEEDFORWARD CARRIER RECOVERY, CHROMATIC DISPERSION, RECEIVER CONCEPT, EQUALIZATION, TOLERANCE
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering

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