MODAL ANALYSIS AND DISPERSION CURVES OF A BRAGG FIBER HAVING ASYMMETRIC LOOP BOUNDARY
Author(s) -
Yogendra Kumar Prajapati,
Vivek Singh,
J. P. Saini
Publication year - 2008
Publication title -
electromagnetic waves
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 89
eISSN - 1559-8985
pISSN - 1070-4698
DOI - 10.2528/pier08090102
Subject(s) - loop (graph theory) , materials science , dispersion (optics) , modal , fiber bragg grating , boundary (topology) , fiber , optics , physics , composite material , mathematics , mathematical analysis , optical fiber , combinatorics
An analysis of the modal propagation characteristics of a Bragg fiber having asymmetric loop boundary is made, using a simple matrix method. The boundary condition is replaced by matrix equation andthe modal eigen value equation is obtainedunder weak guidance condition. The computed results are shown in the form of d ispersion curves andcutoff frequencies andare comparedwith the dispersion curves of a standard Bragg fiber having circular core cross section. It is seen that the proposedBragg fiber with a small number of claddings (two of four) shows comparable or even better performance than the standard Bragg fiber with respect to a few mode-guidance properties.
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