Crosstalk in fiber Raman amplification for WDM systems

Author

Jiang, Weijian ; Ye, Peida

Author_Institution

Beijing Univ. of Posts & Telecommun., China

Volume

7

Issue

9

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

1407

Lastpage

1411

Abstract

The crosstalk between channels in Raman amplification for two-channel WDM system is calculated. Theory shows that severe crosstalk can occur even in the linear amplification (or pump undepletion) region. To ensure small crosstalk, the signal gain and injected pump power should be limited to values well below the threshold of Raman amplification. As a numerical example, a 30-dB gain penalty and 3-dB pump power penalty occur when a 30-dB signal-to-interference ratio (SIR) is required. Thus, the conversion efficiency of Raman amplification in WDM systems is very low

Keywords

crosstalk; frequency division multiplexing; optical fibres; optical links; stimulated Raman scattering; Raman amplification; Raman amplification threshold; conversion efficiency; crosstalk; gain penalty; injected pump power; linear amplification region; pump power penalty; pump undepletion region; signal gain; signal-to-interference ratio; two-channel WDM system; Crosstalk; Estimation theory; Gain; Optical amplifiers; Optical fiber communication; Optical fiber polarization; Optical scattering; Raman scattering; Stimulated emission; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.50721

Filename

50721