Share Email Print

Proceedings Paper

Self-calibrated fiber optic transflection probe for NO2 detection
Format Member Price Non-Member Price
PDF $17.00 $21.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The paper describes an optical fiber based sensor (FOS) for the detection of the pollutant gas, NO2, in a mixture of gases. The design comprises of a fiber optic transflection probe with a sensor element placed at one end. In the present FOS, the transducing component is prepared by sol-gel process. An equal quantity of a diazotizing reagent together with a coupling reagent is immobilized in the sol-gel matrix, which forms an azo dye in the presence of NO2. The sensor relies on the coloration reaction occurring at the micropores of this sol-gel film in the NO2 environment and offers a consequent variation in the optical absorption at a specific wavelength. The current sensor design gives more than 85% of variation in the output intensity at a NO2 concentration of few parts per million in air sample.

Paper Details

Date Published: 8 March 2004
PDF: 6 pages
Proc. SPIE 5272, Industrial and Highway Sensors Technology, (8 March 2004); doi: 10.1117/12.516204
Show Author Affiliations
Shelly John Mechery, Mississippi State Univ. (United States)
Jagdish P. Singh, Mississippi State Univ. (United States)

Published in SPIE Proceedings Vol. 5272:
Industrial and Highway Sensors Technology
Brian Culshaw; Samuel David Crossley; Helmut E. Knee; Michael A. Marcus; John P. Dakin, Editor(s)

© SPIE. Terms of Use
Back to Top