Cross modulation of pump-signals in distributed Raman amplifiers, theory and experiment

Author

Song, Kai ; Dods, Sarah D.

Author_Institution

Dept. of Electr. & Electron. Eng., Melbourne Univ., Parkville, Vic., Australia

Volume

13

Issue

11

fYear

2001

Firstpage

1173

Lastpage

1175

Abstract

Cross modulation of the pump and signal in a backward pumped distributed Raman amplifier (DRA) is investigated theoretically and experimentally. An analytical theory describing the frequency response of cross modulation in a DRA with pump perturbation is developed for the first time. The corner frequency of this response is simply determined by the walkoff parameter of the two counterpropagation lights and the loss coefficient of the Raman fiber. This theory was confirmed by the agreement of theoretical results and experimental measurements.

Keywords

Raman lasers; frequency response; laser theory; optical communication equipment; optical fibre amplifiers; optical fibre losses; optical modulation; optical pumping; Raman fiber; analytical theory; backward pumped distributed Raman fibre amplifier; corner frequency; counterpropagation lights; cross modulation; distributed Raman amplifiers; frequency response; loss coefficient; pump perturbation; pump-signals; walkoff parameter; Distributed amplifiers; Equations; Frequency; Optical amplifiers; Optical fiber polarization; Optical fibers; Optical noise; Photonics; Signal to noise ratio; Stimulated emission;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.959354

Filename

959354