5 May 2015 Optical sensing of rainbow for non-contact gauging of diameter and refractive index of an axisymmetric transparent fiber
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Abstract
In the present paper an optical technique is described to measure non-invasively the diameter and refractive index of a transparent (glass or polymer) fiber that possess a circular cross-section. The method is based on an inverse analysis of the rainbow, which is formed by light scattering of low temporal coherency. This enables to achieve unambiguous mathematical relationships between fringe structure of the rainbow and the fiber.
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Grzegorz Świrniak, "Optical sensing of rainbow for non-contact gauging of diameter and refractive index of an axisymmetric transparent fiber", Proc. SPIE 9506, Optical Sensors 2015, 95061Q (5 May 2015); doi: 10.1117/12.2177993; https://doi.org/10.1117/12.2177993
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