Frequency-Coded Optical-Actuator Pressure Sensing

Mark Johnson

doi:10.1117/12.941105

14 October 1987 Frequency-Coded Optical-Actuator Pressure Sensing

Mark Johnson

Proceedings Volume 0798, Fiber Optic Sensors II; (1987) https://doi.org/10.1117/12.941105
Event: Fourth International Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, The Hague, Netherlands

Abstract

A hollow glass tube is configured both as an oscillating cantilever and, by way of distortions of the tube walls, as a transducer of fluid pressure. Excitation of the vibration, whose frequency is a representation of pressure, and readout of the resultant motion, is carried out over long, multimode fibers. The excitation process is thermal via differential expansion effects between tube and a deposited layer. The device constitutes an all-optical, frequency-coded fiber pressure sensor.

Citation Download Citation

Mark Johnson "Frequency-Coded Optical-Actuator Pressure Sensing", Proc. SPIE 0798, Fiber Optic Sensors II, (14 October 1987); https://doi.org/10.1117/12.941105

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