Instrumentation, Techniques, and Measurement

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

[+] Author Affiliations
Debarup Roy

University of Calcutta, Department of Electronic Science, 92, Acharya Prafulla Chandra Road, Kolkata 700009, India

Vidyasagar College, Department of Electronics, 39 Sankar Ghosh Lane, Kolkata 700006, India

Bhawanipur Education Society College, Department of Physics, 5 Lala Lajpat Rai Sarani, Kolkata 700020, India

Somenath Sarkar

University of Calcutta, Department of Electronic Science, 92, Acharya Prafulla Chandra Road, Kolkata 700009, India

University of Calcutta, Centre for Research in Nanoscience and Nanotechnology, JD-2 Salt Lake City, Kolkata 700098, India

Opt. Eng. 55(8), 084105 (Aug 12, 2016). doi:10.1117/1.OE.55.8.084105
History: Received April 28, 2016; Accepted July 22, 2016
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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.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

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


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