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Equivalent step index (ESI) model for elliptic core fibers

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3 Author(s)
Thyagarajan, K. ; Indian Institute of Technology, New Delhi, India ; Sarkar, S. ; Pal, B.P.

We present empirical relations describing the spectral dependence of the spot sizes of the fundamental mode (along the major and minor axes) in a homogeneous elliptic core fiber. These relations are obtained by modeling the fundamental mode by a Gaussian distribution. Using these relations, we present a method for the determination of the equivalent step index (ESI) parameters of a monomode elliptic Core fiber. The applicability of the proposed method is shown through a) calculation of the cutoff wavelengths of a parabolic index elliptic core fiber and b) calculations of various fiber parameters like the core radii and index difference of an elliptic core fiber from recently reported experimental data.

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Lightwave Technology, Journal of  (Volume:5 ,  Issue: 8 )