Raman-induced polarization-dependent gain in parametric amplifiers pumped with orthogonally polarized lasers

Author

Lin, Q. ; Yaman, F. ; Agrawal, Govind P.

Author_Institution

Inst. of Opt., Univ. of Rochester, NY, USA

Volume

18

Issue

2

fYear

2006

Firstpage

397

Lastpage

399

Abstract

Fiber-optic parametric amplifiers are often pumped using two orthogonally polarized lasers. We show that, contrary to a common belief, such amplifiers exhibit polarization-dependent gain (PDG) because of the contribution of Raman scattering to the underlying four-wave mixing (FWM) process. Such PDG results not only from Raman gain/loss on the signal/idlers imposed by the pumps, but also from variations of FWM efficiency caused by Raman-induced refractive index changes.

Keywords

Raman spectra; multiwave mixing; optical fibre amplifiers; optical parametric amplifiers; optical pumping; refractive index; Raman scattering; fiber-optic parametric amplifiers; four-wave mixing; orthogonally polarized lasers pumping; polarization-dependent gain; refractive index changes; Fiber nonlinear optics; Frequency; Laser excitation; Optical amplifiers; Optical fiber polarization; Optical pumping; Optical scattering; Optical signal processing; Pump lasers; Stimulated emission; Nonlinear optics; Raman scattering; optical fibers; optical parametric amplifiers; polarization;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2005.862365

Filename

1564167