Optics: measuring and testing – By light interference – Using fiber or waveguide interferometer
Patent
1998-12-31
2000-12-26
Turner, Samuel A.
Optics: measuring and testing
By light interference
Using fiber or waveguide interferometer
25022727, G01B 902
Patent
active
061668168
ABSTRACT:
A combination fiber optic current and voltage sensor having a common source and other components. One other common component for certain configurations is the detector. Voltage sources are necessarily designed to avoid coherence and intensity problems when sharing a broadband source with a current sensor. An embodiment of a combination voltage/current sensor shares a birefringence modulator, polarizer, source, detector and electronics. A multitude of fiber optic current sensors and another multitude of fiber optic voltage sensors can share a common fiber light source.
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Rao et al, Spatially-multiplexed fiberoptic Bragg grating strain and temperature sensor system based on interferometric wavelength-shift detection, Electronics Letters, Jun. 1995, pp. 1009-1010.
Frosio et al, Reciprocal Reflection Interferometer for a Fiber Optic Faraday Current Sensor, Applied Optics, Sep. 1994, pp. 6111-6122.
Bohnert et al, Field Test of Interferometric Optical Fiber High-Voltage and Current Sensors, SPIE, Oct. 1994, pp. 16-19.
Pajak Robert A.
Turner Samuel A.
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