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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/739

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dc.contributor.authorJagneet Kaur-
dc.contributor.authorThyagarajan, K-
dc.contributor.authorPal, B P-
dc.identifier.citationOptics Communications, 170(4-6), 355–359en
dc.description.abstractA new empirical relation is proposed describing spectral variation of mode-field radius MFR as inferred from measurements in the far-field of the fiber. It is shown that using this relation, it is possible to estimate the cut-off wavelength of the fiber. The proposed technique is successfully tested through measurements made on two standard step index c single-mode fibers, as well as on an erbium doped fiber EDF having falling within its strong absorption band around c 980 nm. This empirical formula is more accurate than the widely used Marcuse’s formula to describe spectral dependence of MFR determined through measurements made in the fiber’s far-field. The proposed technique is especially suited for estimation of l of doped fibers in which l falls within an absorption band.en
dc.format.extent771017 bytes-
dc.subjectDoped fibersen
dc.subjectSingle-mode fibersen
dc.subjectmode-field radiusen
dc.subjectcut-off wavelengthen
dc.subjecterbium doped fiberen
dc.subjectMarcuse's formulaen
dc.titleEstimation of cut-off wavelength of rare earth doped single-mode fibersen
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