Optical pressure sensor

Details Optical pressure sensor Optical pressure sensor

1982-12-23

1985-01-29

Woodiel, Donald O.

Measuring and testing

Fluid pressure gauge

Photoelectric

73800, G01L 900

Patent

active

044958196

ABSTRACT:
An optical device for monitoring pressure is described. The device is capable of monitoring pressure in relatively hostile high temperature, high pressure environments through the use of a pressure-sensitive means having an all-glass housing. The subject optical device relies on the photoelastic effect produced when a material is subjected to a uniaxial stress to produce birefringent banding. In the subject device, polychromatic light is modified to produce a signal having wavelength-dependent intensity variations to allow the pressure-sensitive device to monitor pressure over a relatively wide range.

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Wickersheim, K. A. et al., "Optical Temperature Measurement", Industrial Research/Development, Dec. 1979.
Spillman, Jr. W. B., "Multimode Fiber-Optic Pressure Sensor Based on the Photoelastic Effect" Optic Letters, vol. 7, No. 8, Aug. 1982 (pp. 388-390).

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