Precise measurement of the refractive index profile of optical fibers by a nondestructive interference method

概要

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In this paper, the accuracy of the transverse interference method has been raised up by fully correcting a probing ray refraction due to the index gradient of the fiber. A simulation shows that the error is in principle within 0.3% of the index difference between the core center and the cladding. The index profiles of some fibers were practically measured and it was confirmed that this method can be used for a precise, nondestructive, and fast measurement.
電子通信学会の論文