A Fibre Optic Pressure Transducer Using A Wavelength Modulation Sensor

J. D. Place

doi:10.1117/12.946245

22 August 1985 A Fibre Optic Pressure Transducer Using A Wavelength Modulation Sensor

J. D. Place

Proceedings Volume 0522, Fibre Optics '85; (1985) https://doi.org/10.1117/12.946245
Event: Sira/Fibre Optics '85, 1985, London, United Kingdom

Abstract

This paper describes the development of a fibre optic pressure transducer based on the combination of an optical displacement sensor with a conventional pressure sensing mechanism. The fibre optic displacement sensor utilised was of the wavelength modulation type and had previously been demonstrated to have a resolution of 6.5um over a range of 10mm when illuminated by a white light sourcel. In the work described here the source was replaced by a near-infra-red light emitting diode whose spectral bandwidth provided a displacement range of lmm. This sensor was fitted to a conventional pressure sensing mechanism which produced a displacement of lmm in response to an applied pressure of 30mbar. This paper reports on the evaluation of the transducer and gives the results of the performance in terms of hysteresis and linearity.

Citation Download Citation

J. D. Place "A Fibre Optic Pressure Transducer Using A Wavelength Modulation Sensor", Proc. SPIE 0522, Fibre Optics '85, (22 August 1985); https://doi.org/10.1117/12.946245

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