US Seismic Systems, Inc.

US Sensor Systems, Inc.

William Morey

Eric Lee Goldner

Agop Hygasov Cherbettchian

Gerald Robert Baker

James Kengo Andersen

Ira Jeffrey Bush

Leo K Lam

An optical sensor in which acceleration, acoustic velocity, or displacement (vibration) causes a corresponding shift in the center wavelength of the sensor output. The sensor can be coupled to a high-speed interferometric interrogator through an unbalanced fiber interferometer. The unbalanced interferometer functions to translate optical wavelength shift into phase shift, which is easily demodulated by the interrogator. A method of measuring acceleration uses the sensor.

Fiber optic particle motion sensor and measuring method using the sensor

A sensor apparatus combines an optical sensor in which acceleration, acoustic velocity, or displacement (vibration) causes a corresponding shift in the center wavelength of the sensor output, coupled to a high speed interferometric interrogator, through an unbalanced fiber interferometer. The unbalanced interferometer functions to translate optical wavelength shift into phase shift, which is easily demodulated by the interrogator.

Fiber optic particle motion sensor system

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Chatsworth, CA, United States of America

William Morey