Evanescent Field Spectroscopy With Optical Fibers For Chemical Sensing

Marek T Wlodarczyk; Deborah J Vickers; Samuel P Kozaitis

doi:10.1117/12.937515

28 April 1987 Evanescent Field Spectroscopy With Optical Fibers For Chemical Sensing

Marek T Wlodarczyk, Deborah J Vickers, Samuel P Kozaitis

Proceedings Volume 0718, Fiber Optic and Laser Sensors IV; (1987) https://doi.org/10.1117/12.937515
Event: Cambridge Symposium-Fiber/LASE '86, 1986, Cambridge, MA, United States

Abstract

A simple fiber optic chemical sensor is reported which may be used to detect in situ and in real time concentrations of gases and liquids. The sensor, comprised of a single LED source and a cladding-free multimode fiber, operates on the principle of evanescent field and differential spectroscopy. Exhibiting a linear response to relative humidity, this sensor selectively detects water vapor while remaining insensitive to source power fluctuations.

Citation Download Citation

Marek T Wlodarczyk, Deborah J Vickers, and Samuel P Kozaitis "Evanescent Field Spectroscopy With Optical Fibers For Chemical Sensing", Proc. SPIE 0718, Fiber Optic and Laser Sensors IV, (28 April 1987); https://doi.org/10.1117/12.937515

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