Optical Fibre Sensor For Measuring pH In Physiological Range

Witold Golunski; Ryszard Hypszer; Jerzy Plucinski

doi:10.1117/12.952991

30 January 1990 Optical Fibre Sensor For Measuring pH In Physiological Range

Witold Golunski, Ryszard Hypszer, Jerzy Plucinski

Proceedings Volume 1085, Optical Fibres and Their Applications V; (1990) https://doi.org/10.1117/12.952991
Event: Optical Fibers and Their Applications V, 1989, Warsaw, Poland

Abstract

The principle of fibre optic pH sensor operation is given in this paper. PH measurement in 7.0-7.5 range is based on changing of optical property of a indicator. The indicator is sensitive to the hydrogen ion concentration in the water solution. Microspheres of the polymer XAD-2 (a styrene-divinylbenzene copolymer) containing bound phenol red were used as a indicator. Such prepared indicator was inserted in optrode. The optrode was connected with transmitter and receiver by a bundle of glass fibres (multicomponent glass). Transmitter was done by using green LED while receiver construction was based on pin photodiode.

Citation Download Citation

Witold Golunski, Ryszard Hypszer, and Jerzy Plucinski "Optical Fibre Sensor For Measuring pH In Physiological Range", Proc. SPIE 1085, Optical Fibres and Their Applications V, (30 January 1990); https://doi.org/10.1117/12.952991

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