Ghosh, Debashri and Roy, Samudra and Bhadra, Shyamal Kumar (2010) Determination of modal effective indices and dispersion of microstructured fibers with different configurations: a variational approach. Journal of Modern Optics, 57 (8). pp. 607-620. ISSN 0950-0340

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A simple semi-analytical model based on the variational method is developed for determining the effective indices of the fundamental modes and consecutively the dispersion properties of microstructured optical fibers (MOFs) with different lattice geometries without resorting to any numerical tool. We consider an equivalent step-index (ESI) profile of the MOF and the fundamental mode shape is approximated as a simple Gaussian function in the core. Effective index data and dispersion obtained from the proposed variational method offer reasonable agreement with numerically derived data using the Finite Element Method (FEM). The proposed model offers an alternative and swift way for reasonably precise determination of the effective index of the fundamental mode and dispersion properties of MOF designs with different lattice geometries. Finally, as a major application, the dispersion property of a fabricated MOF, derived through the proposed variational method, is directly used in order to model experimental supercontinuum (SC) spectra with satisfactory agreement.

Item Type: Article
Uncontrolled Keywords: microstructured fiber; variational method; dispersion
Subjects: Processing Science
Divisions: Fiber Optics and Photonics
Depositing User: Bidhan Chaudhuri
Date Deposited: 10 Feb 2012 10:51
Last Modified: 28 Mar 2016 17:43

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