Roy, Samudra and Bhadra, Shyamal Kumar (2008) Effect of two photon absorption on nonlinear pulse propagation in gain medium. Communications in Nonlinear Science and Numerical Simulation, 13 (10). pp. 2157-2166. ISSN 1007-5704

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Abstract

The effects of two photon absorption (TPA) and gain dispersion on soliton propagation in amplified medium are investigated. For finite gain bandwidth, the effect of gain dispersion becomes significant along with TPA and is treated as perturbation in fundamental soliton propagation. Including these perturbing effects an analytical expression of integrated intensity is formulated applying a completely new methodology by adopting Rayleigh's dissipation function in the framework of variational approach. With classical analogy, the Euler-Lagrange equation in non-conservative system is used to solve the problem analytically. In order to justify the analytical prediction a numerical verification is made by split-step beam propagation method following Ginzburg-Landau equation. (c) 2007 Elsevier B.V. All rights reserved.

Item Type:	Article
Uncontrolled Keywords:	Ginzburg-Landau equation; variational method; Rayleigh dissipation function; soliton perturbation theory; soliton amplification
Subjects:	Processing Science
Divisions:	Fiber Optics and Photonics
Depositing User:	Bula Ghosh
Date Deposited:	20 Jan 2012 05:23
Last Modified:	01 Apr 2016 10:27
URI:	http://cgcri.csircentral.net/id/eprint/405

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