Interferometric Sensors For Dc Measurands -A New Class Of Fiber Sensors

A D Kersey; F Bucholtz; K Sinansky; A Dandridge

doi:10.1117/12.937516

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28 April 1987 Interferometric Sensors For Dc Measurands -A New Class Of Fiber Sensors

A D Kersey, F Bucholtz, K Sinansky, A Dandridge

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Proceedings Volume 0718, Fiber Optic and Laser Sensors IV; (1987) https://doi.org/10.1117/12.937516
Event: Cambridge Symposium-Fiber/LASE '86, 1986, Cambridge, MA, United States

Abstract

Fiber optic interferometric sensors are typically susceptible to environmentally induced thermo/mechanical perturbations at low frequencies, which preclude their use as dc sensors. However, by using a fiber/transducer configuration in which strain in a linear transducing element is converted nonlinearly into strain in the fiber, the measurement frequency can be up-converted from dc to a frequency where near shot noise limited performance can be obtained. This technique is applicable to the dc or low frequency measurement of any field variable for which a suitable non-linear displacement to strain configuration can be constructed. In this paper the operation of a dc displacement, acceleration and pressure sensor is described, as well as the multiplexing of these sensors.

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A D Kersey, F Bucholtz, K Sinansky, and A Dandridge "Interferometric Sensors For Dc Measurands -A New Class Of Fiber Sensors", Proc. SPIE 0718, Fiber Optic and Laser Sensors IV, (28 April 1987); https://doi.org/10.1117/12.937516

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