Open AccessAmplified-spontaneous noise limit of optical OFDM lightwave systems
Author(s) -
Arthur J. Lowery
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.000860
Subject(s) - optics , orthogonal frequency division multiplexing , laser linewidth , optical filter , optical communication , phase noise , laser , dispersion (optics) , physics , optical amplifier , computer science , telecommunications , channel (broadcasting)
Optical Orthogonal Frequency Division Multiplexing (O-OFDM) systems use electronic digital computation to provide dispersion compensation that can be rapidly adapted to changes in the optical link or optical network. Recent demonstrations have shown compensation of several thousand kilometers. Earlier simulations and analysis showed better sensitivities than non-return to zero systems; however, they assumed optical filters with very narrow bandwidths and narrow-linewidth lasers. This paper explores the effect of the optical filter bandwidths and laser linewidths for both coherent and direct-detection systems using analysis and simulations.