Phase-matched four-wave mixing between pumps and signals in a copumped Raman amplifier

Author

Wong, William S. ; Chen, Chien-Jen ; Ho, Min-Chen ; Lee, Hak Kyu

Author_Institution

Onetta Inc., Sunnyvale, CA, USA

Volume

15

Issue

2

fYear

2003

Firstpage

209

Lastpage

211

Abstract

We observe four-wave mixing (FWM) between copropagating pumps and signals in a Raman amplifier when the zero-dispersion wavelength of the transmission fiber lies symmetrically between the pump and the signal wavelengths. The resultant FWM products, which grow as they experience Raman gain along the fiber, can degrade the signal´s optical signal-to-noise ratio by as much as 10 dB for a Raman ON-OFF gain of 15 dB.

Keywords

Raman lasers; laser noise; multiwave mixing; optical fibre amplifiers; optical fibre dispersion; optical phase matching; optical pumping; FWM products; Raman ON-OFF gain; Raman gain; chromatic dispersion; copropagating pumps; copumped Raman amplifier; optical fiber amplifiers; optical fiber dispersion; optical signal-to-noise ratio; phase-matched four-wave mixing; pump wavelength; signal wavelength; split-step Fourier simulations; transmission fiber; zero-dispersion wavelength; Degradation; Fiber nonlinear optics; Four-wave mixing; Frequency conversion; Optical amplifiers; Optical fiber amplifiers; Optical frequency conversion; Optical mixing; Optical pumping; Stimulated emission;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2002.806074

Filename

1174122