Modeling of the spectrum in a random distributed feedback fiber laser within the power balance modes


The simplest model for a description of the random distributed feedback (RDFB) Raman fiber laser is a power balance model describing the evolution of the intensities of the waves over the fiber length. The model predicts well the power performances of the RDFB fiber laser including the generation threshold, the output power and pump and generation wave intensity distributions along the fiber. In the present work, we extend the power balance model and modify equations in such a way that they describe now frequency dependent spectral power density instead of integral over the spectrum intensities. We calculate the generation spectrum by using the depleted pump wave longitudinal distribution derived from the conventional power balance model. We found the spectral balance model to be sufficient to account for the spectral narrowing in the RDFB laser above the threshold of the generation.

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Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: Ilya D. Vatnik and Dmitry V. Churkin. "Modeling of the spectrum in a random distributed feedback fiber laser within the power balance modes ", Proc. SPIE 9135, Laser Sources and Applications II, 91351Z (May 1, 2014). Copyright 2014 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. DOI:
Event Title: Laser sources and applications II
Event Type: Other
Event Dates: 2014-04-14 - 2014-04-17
Uncontrolled Keywords: balance model,Raman laser,random laser,Rayleigh backscattering,Applied Mathematics,Computer Science Applications,Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials,Condensed Matter Physics
ISBN: 978-1-6284-1083-9
Last Modified: 04 Jan 2024 18:53
Date Deposited: 03 Mar 2015 13:05
Full Text Link: http://proceedi ... ticleid=1867889
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference contribution
Published Date: 2014
Authors: Vatnik, Ilya D.
Churkin, Dmitry V.



Version: Published Version

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