Fiber optic sensor for broad range pH detection

Jan Rayss; Grzegorz Sudolski

doi:10.1117/12.517050

22 September 2003 Fiber optic sensor for broad range pH detection

Jan Rayss, Grzegorz Sudolski

Proceedings Volume 5124, Optoelectronic and Electronic Sensors V; (2003) https://doi.org/10.1117/12.517050
Event: Optoelectronic and Electronic Sensors V, 2002, Rzeszow, Poland

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.

Citation Download Citation

Jan Rayss and Grzegorz Sudolski "Fiber optic sensor for broad range pH detection", Proc. SPIE 5124, Optoelectronic and Electronic Sensors V, (22 September 2003); https://doi.org/10.1117/12.517050

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