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30 October 2007 Modelling of elliptical core D-fibers for determination of cladding thickness
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Proceedings Volume 6796, Photonics North 2007; 67963M (2007)
Event: Photonics North 2007, 2007, Ottawa, Canada
Cladding-reduced fibers with elliptical cores can be used in the fabrication of fiber-optic sensors. Here we analyze the power transmission ratio in cladding reduced D-shaped optical fibers for the purpose of determining the cladding thickness, in a non-destructive manner, when the fibers have been etched to reduce their cladding thicknesses to allow interaction of the optical evanescent field with an external medium having a refractive index greater than the mode effective index of the fiber. Parameters needed to determine the cladding thickness are determined empirically using the measured power transmission ratio of a few calibration fibers. We show that one can estimate the cladding thickness by fitting the measured transmission ratio curves for the fiber of interest to the curves generated for the calibration fibers.
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Sameer M. Chandani and Nicolas A. F. Jaeger "Modelling of elliptical core D-fibers for determination of cladding thickness", Proc. SPIE 6796, Photonics North 2007, 67963M (30 October 2007);

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