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Fiber-optic interferometer using frequency-modulated laser diodes

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Abstract

This paper describes an electrically passive fiber-optic interferometer which uses dual frequency-modulated laser diodes. Experimental results show that this type of interferometer can attain a displacement range of 100 μm with subnanometer resolution. This technique can serve as the basis for a number of high-precision fiber-optic sensors.

© 1986 Optical Society of America

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