Abstract

A spatial coherence analysis of light propagation in optical fibers illuminated with a laser source is presented. Modulus and phase of the complex degree of spatial coherence across the end cross section are measured by means of Michelson-type wave-front-reversing interferometry. Interference fringe patterns of a laser beam emerging from the output end of optical fibers are also photographed. Comparison of the measurement with theory enables us to characterize the modal content in a quasi-single-mode fiber.

© 1986 Optical Society of America

Complex degree of spatial coherence in an optical fiber: theory and experiment

M. Imai, S. Satoh, and Y. Ohtsuka
J. Opt. Soc. Am. A 3(1) 86-93 (1986)

Partial coherence of light modulated by progressive periodic ultrasonic waves

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Source of light with spatially periodic coherence and its uses in image addition or subtraction

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Modulation of optical coherence by ultrasonic waves

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Spatial coherence at the output of multimode optical fibers

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