Optical waveguides – Optical waveguide sensor
Patent
1997-12-30
2000-02-29
Palmer, Phan T. H.
Optical waveguides
Optical waveguide sensor
385 32, 385 30, G02B 600
Patent
active
060319445
ABSTRACT:
A very high temperature microbeam sensor of a resonant integrated microstructure having an electrostatic beam driver and an optical fiber pick-up for sensed light from the beam. The high temperature sensor has no components that are vulnerable to temperatures up to 600 degrees C. Associated components for detection, processing and driving are remote from the sensor environment. By using different materials in the beam assembly, such as tungsten for the beam, and sapphire for the substrate and the shell, the sensor can withstand temperatures up to 1000 degrees C. Also, optical fiber may be used for long distance connections between processing electronics and the driver in the sensing device, by locating a photo detector just outside the very or ultra high temperature sensing environment, and then using optical fiber for sending long distance signals from the processor to the driver photo detector, for eliminating electrical signal-to-noise problems.
REFERENCES:
patent: 5417115 (1995-05-01), Burns
patent: 5458000 (1995-10-01), Burns et al.
patent: 5511427 (1996-04-01), Burns
patent: 5550516 (1996-08-01), Burns et al.
patent: 5559358 (1996-09-01), Burns et al.
Honeywell Inc.
Palmer Phan T. H.
Shudy Jr. John G.
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