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Proceedings Paper

Fiber optic sensor for broad range pH detection
Author(s): Jan Rayss; Grzegorz Sudolski
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Paper Abstract

In the paper the hybrid optical fibre pH sensor based on absorption and refraction is presented. As an optical transducer pH-sensitive metyl orange dye was exploited. Additionally, variations of the refractive index of the porous silica film with the pH of solution were also utilized. The film, in which the dye was encapsulated, was prepared by means of the sol-gel method and deposited onto the fibre core. It was found that the sensitivity for acidic (2÷6) and basic (7÷10) ranges were 1,0 dB/pH and 3,5 dB/pH, respectively.

Paper Details

Date Published: 22 September 2003
PDF: 5 pages
Proc. SPIE 5124, Optoelectronic and Electronic Sensors V, (22 September 2003); doi: 10.1117/12.517050
Show Author Affiliations
Jan Rayss, Maria Curie-Sklodowska Univ. (Poland)
Grzegorz Sudolski, Maria Curie-Sklodowska Univ. (Poland)

Published in SPIE Proceedings Vol. 5124:
Optoelectronic and Electronic Sensors V
Wlodzimierz Kalita, Editor(s)

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