Continuous-wave Raman amplification in silicon waveguides: beyond the undepleted pump approximation

被引：24

作者：

Rukhlenko, Ivan D. ^{[1
]}

Premaratne, Malin ^{[1
]}

Dissanayake, Chethiya ^{[1
]}

Agrawal, Govind P. ^{[2
]}

机构：

[1] Monash Univ, Adv Comp & Simulat Lab, Clayton, Vic 3800, Australia

[2] Univ Rochester, Inst Opt, Rochester, NY 14627 USA

来源：

OPTICS LETTERS | 2009年 / 34卷 / 04期

基金：

澳大利亚研究理事会; 美国国家科学基金会;

关键词：

NONLINEAR ABSORPTION; SCATTERING;

D O I：

10.1364/OL.34.000536

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present approximate analytical expressions describing nonlinear interaction of two optical waves co-propagating inside a silicon waveguide in the presence of linear losses, stimulated Raman scattering, and free-carrier absorption. Our approach avoids the undepleted-pump approximation, which we show to be inadequate to describe accurately the Raman-gain process. Based on our calculations, we propose a new generalized definition for the effective length and show that it provides better insight into the impact of nonlinear absorption on Raman amplification in silicon waveguides. (C) 2009 Optical Society of America

引用

页码：536 / 538

页数：3

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