Reduction of four-wave mixing crosstalk in WDM systems using unequally spaced channels

Author

Forghieri, Fabrizio ; Tkach, R.W. ; Chraplyvy, A.R. ; Marcuse, D.

Author_Institution

Dept. of Electr. Eng., Princeton Univ., NJ, USA

Volume

6

Issue

6

fYear

1994

fDate

6/1/1994 12:00:00 AM

Firstpage

754

Lastpage

756

Abstract

Crosstalk due to four-wave mixing (FWM) is the dominant nonlinear effect in long-haul multichannel optical communication systems employing dispersion-shifted fiber. A technique to design the channel frequency allocation in order to minimize the crosstalk due to FWM is presented. It is shown that suitable unequal channel separations can be found for which no four-wave mixing product term is superimposed on any of the transmitted channels. This is obtained at the expense of some expansion of the system bandwidth. Simulations are presented to show the effectiveness of this technique in a 10-channel, 10-Gb/s per channel, system.<>

Keywords

crosstalk; frequency allocation; multiwave mixing; optical fibres; optical links; wavelength division multiplexing; 10-channel; WDM systems; channel frequency allocation; crosstalk; dispersion-shifted fiber; four-wave mixing crosstalk; long-haul multichannel optical communication systems; nonlinear effect; system bandwidth; transmitted channels; unequal channel separations; unequally spaced channels; Bandwidth; Fiber nonlinear optics; Four-wave mixing; Frequency; Optical crosstalk; Optical distortion; Optical fiber dispersion; Optical mixing; Radio spectrum management; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.300184

Filename

300184