12 August 2016 Simple but accurate method to compute LP11 mode cutoff frequency of nonlinear optical fibers by Chebyshev technique
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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.
© 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)
Debarup Roy, 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 . Submission:
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