Optic sensor for determining environmental conditions

Details Optic sensor for determining environmental conditions Optic sensor for determining environmental conditions

1992-07-17

1994-03-01

Chilcot, Jr., Richard E.

Measuring and testing

Fluid pressure gauge

Photoelectric

73708, 25023119, G01L 900

Patent

active

052897206

ABSTRACT:
A sensor for use in an optic system to detect current conditions in an environment. The sensor has a crystal member with a first waveguide extending from a top surface and a second waveguide extending from a bottom surface of a core member. Polarized light waves from a source are simultaneously communicated to the first and second waveguides. A first pressure is communicated to the top surface of the crystal member and an unknown pressure corresponding to the pressure of the environment is communicated to the bottom surface of the crystal member. The first pressure and the unknown pressure develop a pressure differential which acts on the crystal member to deform the first and second waveguides. The deformation of the first and second waveguides modifies the polarized light waves to create first and second output waves which are communicated to an optical interface where differences therebetween are extracted. The differences are analyzed by a computer to identify the current pressure and temperature of the environment.

REFERENCES:
patent: 3950987 (1976-04-01), Slezinger et al.
patent: 4367040 (1983-01-01), Goto
patent: 4495411 (1985-01-01), Rashleigh
patent: 4495819 (1985-01-01), Tekippe
patent: 4757195 (1988-07-01), Katagiri
patent: 4932263 (1990-06-01), Wlodarczyk
patent: 5187983 (1993-02-01), Bock et al.

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