Fiber Optic Sensors With Internal Referencing

Grigory Adamovsky; Duncan J. Maitland IV

doi:10.1117/12.947645

16 January 1989 Fiber Optic Sensors With Internal Referencing

Grigory Adamovsky, Duncan J. Maitland IV

Proceedings Volume 0954, Optical Testing and Metrology II; (1989) https://doi.org/10.1117/12.947645
Event: SPIE International Symposium on Optical Engineering and Industrial Sensing for Advance Manufacturing Technologies, 1988, Dearborn, MI, United States

Abstract

The main problem with amplitude modulating type sensors is that any variation in the intensity of the optical signal which occurs throughout the sensing system is interpreted by the photodetector as resulting from the sensor itself and is reflected as an error in the sensed parameter. To account for these errors, a referencing technique with the signal and reference channels separated in the time domain over the same fiber link can be used. Selected sensing and signal processing techniques involving temporally separated signal and referencing channels are described. A transition from the time into the frequency domain is also discussed. Experimental data are presented.

Citation Download Citation

Grigory Adamovsky and Duncan J. Maitland IV "Fiber Optic Sensors With Internal Referencing", Proc. SPIE 0954, Optical Testing and Metrology II, (16 January 1989); https://doi.org/10.1117/12.947645

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