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1 March 2011 Lorentzian approximation of the fundamental mode in single mode linear and nonlinear fiber
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Abstract
In this paper, we approximate the fundamental mode in single mode step and graded index optical fiber by a single parameter Lorentzian function within scalar variational framework. We show that it works in a low V region, a region important for evanescent wave coupling, more accurately in terms of propagation constant in comparison to single parameter Gaussian for linear and nonlinear fibers. Furthermore, we show that the low V variations of normalized propagation constant b(V), group delay d(V), and waveguide dispersion g(V) with V based on Lorentzian approximation match more accurately with the results for linear optical fiber in comparison to Gaussian approximation in the low V region.
©(2011) Society of Photo-Optical Instrumentation Engineers (SPIE)
Pratap K. Bandyopadhyay and Somenath N. Sarkar "Lorentzian approximation of the fundamental mode in single mode linear and nonlinear fiber," Optical Engineering 50(3), 035004 (1 March 2011). https://doi.org/10.1117/1.3556715
Published: 1 March 2011
JOURNAL ARTICLE
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