Analytical Expressions for Nonlinear Transmission Performance of Coherent Optical OFDM Systems With Frequency Guard Band

Author

Gao, G. ; Chen, Xia ; Shieh, William

Author_Institution

State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, China

Volume

30

Issue

15

fYear

2012

Firstpage

2447

Lastpage

2454

Abstract

Closed-form expressions for nonlinear transmission performance of coherent optical OFDM systems (CO-OFDM) with frequency guard band are derived. The analytical expressions have been substantiated by numerical simulations using split-step method for various frequency spacings and fiber dispersion maps. The analytical solution shows good estimation accuracy, and the average absolute difference of Q factor between analytical results and numerical simulations are below 0.3 dB for the three typical systems simulated. Using this expression, the dependence of system performance for CO-OFDM on the frequency guard band spacing and fiber dispersion is also investigated analytically to provide insights for system design.

Keywords

Bandwidth; Modulation; OFDM; Optical fiber dispersion; Signal to noise ratio; Coherent communications; nonlinear transmission performance; orthogonal frequency-division multiplexing (OFDM); wavelength-division multiplexing (WDM);

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2012.2200652

Filename

6211389