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

Title: Estimation of cut-off wavelength of rare earth doped single-mode fibers
Authors: Jagneet Kaur
Thyagarajan, K
Pal, B P
Keywords: Doped fibers
Single-mode fibers
mode-field radius
cut-off wavelength
erbium doped fiber
Marcuse's formula
Issue Date: 1999
Citation: Optics Communications, 170(4-6), 355–359
Abstract: A 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.
URI: http://eprint.iitd.ac.in/dspace/handle/2074/739
Appears in Collections:Physics

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