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Optical Engineering

Empirical relations to determine the normalized spot size of a single-mode trapezoidal index fiber and computation of its propagation characteristics
Author(s): Aswini Kumar Mallick; Somenath N. Sarkar
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Paper Abstract

Simple and complete empirical relations are presented here to determine a normalized spot size in terms of normalized frequencies over a long range and aspect ratio of a trapezoidal index single-mode fiber considering Gaussian approximation of the fundamental mode following the Marcuse method for the first time. After verification of their validity for arbitrary values of aspect ratio and normalized frequency, we calculate various propagation characteristics viz. dispersion and splice loss by using our formulations. Upon comparison, we observe an excellent match and the validity of our results with exact values and other results available in the literature. These formulas should attract the attention of experimentalists as a simple alternative to the rigorous methods of estimating the propagation characteristics of such fibers.

Paper Details

Date Published: 16 July 2014
PDF: 7 pages
Opt. Eng. 53(7) 076103 doi: 10.1117/1.OE.53.7.076103
Published in: Optical Engineering Volume 53, Issue 7
Show Author Affiliations
Aswini Kumar Mallick, Univ. of Calcutta (India)
Vidyasagar Univ. (India)
Somenath N. Sarkar, Univ. of Calcutta (India)

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