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A method for the exact determination of the remaining cladding thickness (h) of a polished single-mode fiber, from the measurement of the throughput attenuation, is shown. Experimental loss variations with h are verified with the theoretical expression of the loss coefficient, which depends on the fiber parameters, source wavelength, and refractive index of the liquid placed over the polished fiber.
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Das et al. (1994) studied this question.
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