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Coherence length modulation of a multimode laser diode in a dual Michelson interferometer configuration

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Abstract

The use of a multimode (compact-disk type) laser diode in a dual Michelson interferometer arrangement is investigated, both theoretically and experimentally, by using the technique of coherence length modulation. A reproducible way of shifting the interference regions is considered for the potential use of the technique in optical sensors, for flow or distance measurement.

© 1992 Optical Society of America

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