Simple but accurate method to compute LP11 mode cutoff frequency of nonlinear optical fibers by Chebyshev technique

Debarup Roy; Somenath Sarkar

doi:10.1117/1.OE.55.8.084105

12 August 2016 Simple but accurate method to compute LP₁₁ mode cutoff frequency of nonlinear optical fibers by Chebyshev technique

Debarup Roy, Somenath Sarkar

Author Affiliations +

Optical Engineering, Vol. 55, Issue 8, 084105 (August 2016). https://doi.org/10.1117/1.OE.55.8.084105

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.

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Debarup Roy and Somenath Sarkar "Simple but accurate method to compute LP₁₁ mode cutoff frequency of nonlinear optical fibers by Chebyshev technique," Optical Engineering 55(8), 084105 (12 August 2016). https://doi.org/10.1117/1.OE.55.8.084105

Published: 12 August 2016

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