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Optimization of phase detectability in a free-running homodyne fiber interferometer

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Abstract

Fiber-optic interferometric fiber sensors have been developed for the detection of a range of physical parameters, such as acoustic and magnetic fields. A considerable amount of research effort in this area has been directed at the development of demodulation techniques which provide linearization of the cosine transfer function of the basic two beam interferometric system. Furthermore, a number of approaches for improving the phase shift detection sensitivity of fiber interferometers based on intensity noise cancellation,1 and phase noise suppression2 have been developed.

© 1991 Optical Society of America

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