Evanescent Wave Fiber Optic Chemical Sensor

C. A. Villarruel; D. D. Dominguez; A. Dandridge

doi:10.1117/12.941110

14 October 1987 Evanescent Wave Fiber Optic Chemical Sensor

C. A. Villarruel, D. D. Dominguez, A. Dandridge

Proceedings Volume 0798, Fiber Optic Sensors II; (1987) https://doi.org/10.1117/12.941110
Event: Fourth International Symposium on Optical and Optoelectronic Applied Sciences and Engineering, 1987, The Hague, Netherlands

Abstract

Fiber Optic intensity sensors based on the interaction between an external medium and t he evanescent wave of unclad and tapered multimode and single mode fibers have been developed to measure refractive index, temperature and liquid level. Here we describe an intensity bio-chemical fiber optic sensor (BCFOS) where absorption of t he evanescent wave by a dye-labeled solution is used to modulate, attenuate, t he intensity of t he signal in t he core of the fiber. The fabrication and performance is described for laboratory prototype sensors using etched multimode and tapered single mode fibers.

Citation Download Citation

C. A. Villarruel, D. D. Dominguez, and A. Dandridge "Evanescent Wave Fiber Optic Chemical Sensor", Proc. SPIE 0798, Fiber Optic Sensors II, (14 October 1987); https://doi.org/10.1117/12.941110

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