Fiber grating-based sensing system with interferometric waveleng

Optics: measuring and testing – By particle light scattering – With photocell detection

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25022727, G01B 902

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active

053611306

ABSTRACT:
A system for sensing a measurand field, the system comprising a source of broadband light, a sensor, an unbalanced optical interferometric apparatus, and a signal processor. The sensor produces an optical return signal having a wavelength functionally dependent on the measurand field. The interferometric apparatus produces an electrical interference output signal having a phase shift functionally dependent on the wavelength of the return signal, and the processor develops a processing signal indicative of the measurand field value.

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