Abstract

A multimode fiber-optic pressure sensor is described that is based on the photoelastic effect. The device was shown to be able to detect pressures as small as 95 Pa, to have a dynamic range of 86 dB, and to have hysteresis less than 0.01. Device sensitivity may easily be modified to coincide with required measurement sensitivity through careful choice of the active photoelastic material. The device is simple, rugged, electrically passive, and compatible with existing multimode technology.

© 1982 Optical Society of America

Multimode fiber-optic hydrophone based on the photoelastic effect

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