Share Email Print
cover

Proceedings Paper

Evanescent wave sensor for detecting volatile organic compounds
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

This work evaluates the usefulness of an intracore long period grating (LPG) structure on optical fiber for constructing a fiber-optic chemical sensor. The sensor response relies on the evanescent field interaction of core- guided light with volatile organic compounds (VOCs) surrounding the long period gratings. The LPGs were coated with proprietary chemical indicators having strong affinities for VOCs. The feasibility of this approach was tested by using representative hydrocarbons and halohydrocarbons in parts per thousand to parts per million concentrations. Test results demonstrate that LPGs offer the promise for sensitively detecting VOCs in air, water, and soil matrices.

Paper Details

Date Published: 23 February 1999
PDF: 8 pages
Proc. SPIE 3540, Chemical, Biochemical, and Environmental Fiber Sensors X, (23 February 1999); doi: 10.1117/12.339787
Show Author Affiliations
Kisholoy Goswami, Intelligent Optical Systems, Inc. (United States)
John D. Prohaska, Spectran Speciality Optics Co. (United States)
Anil Menon, Intelligent Optical Systems, Inc. (United States)
Edgar A. Mendoza, Intelligent Optical Systems, Inc. (United States)
Robert A. Lieberman, Intelligent Optical Systems, Inc. (United States)


Published in SPIE Proceedings Vol. 3540:
Chemical, Biochemical, and Environmental Fiber Sensors X
Robert A. Lieberman, Editor(s)

© SPIE. Terms of Use
Back to Top