Abstract

A stabilized fiber-optic interferometer was developed for vibration measurement by using two laser diodes of different wavelengths and one polarization-maintaining fiber. Passive signal processing of two signals in quadrature is used to obtain the vibration amplitude with a resolution of approximately 0.1 nm. An extension of the signal-processing scheme is proposed that provides compensation for bending or temperature-induced transmission losses of the two propagation modes of the fiber.

© 1991 Optical Society of America

Passive demodulation of miniature fiber-optic-based interferometric sensors using a time-multiplexing technique

J. L. Santos and D.A. Jackson
Opt. Lett. 16(15) 1210-1212 (1991)

Bistable fiber-optic Michelson interferometer that uses wavelength control

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Fiber-optic interferometer for surface profile measurement with vibration suppression

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Fiber-optic sensor for simultaneous and independent measurement of vibration and temperature in electric generators

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Interrogation of a conventional current transformer by a fiber-optic interferometer

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