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Optical Engineering

Simple but accurate method to compute LP11 mode cutoff frequency of nonlinear optical fibers by Chebyshev technique
Author(s): Debarup Roy; Somenath Sarkar
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Paper Abstract

We propose a simple method to compute the first higher order mode cutoff frequency of a single-mode fiber in the presence of optical nonlinearity. We consider optical Kerr-type nonlinearity for these fibers having dispersion-shifted and dispersion-flattened profiles. Our analysis involves the Chebyshev method but introduces a linearization of cubic terms of fields due to Kerr-type nonlinearity. Our results are shown to match excellently with the available exact numerical values. Thus, this formulation and stepwise algorithm should be considered as a simple but accurate alternative to deeply involved numerical technique and used as a guideline in calculating and minimizing the modal noise in single-mode nonlinear fibers.

Paper Details

Date Published: 12 August 2016
PDF: 6 pages
Opt. Eng. 55(8) 084105 doi: 10.1117/1.OE.55.8.084105
Published in: Optical Engineering Volume 55, Issue 8
Show Author Affiliations
Debarup Roy, Univ. of Calcutta (India)
Vidyasagar College (India)
Bhawanipur Education Society College (India)
Somenath Sarkar, Univ. of Calcutta (India)

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