Fiber optic pH sensor for gastric measurements: preliminary results

Eden Januario Netto; John I. Peterson; Binseng Wang

doi:10.1117/12.144828

21 May 1993 Fiber optic pH sensor for gastric measurements: preliminary results

Eden Januario Netto, John I. Peterson, Binseng Wang

Proceedings Volume 1886, Fiber Optic Sensors in Medical Diagnostics; (1993) https://doi.org/10.1117/12.144828
Event: OE/LASE'93: Optics, Electro-Optics, and Laser Applications in Scienceand Engineering, 1993, Los Angeles, CA, United States

Abstract

This paper describes preliminary results on the development of a fiber optic pH sensor for gastric measurements. As the pH values in the gastric system vary from approximately 1 to 7, a combination of appropriate dyes to cover this broad range should be used. pH colorimetric indicators bound in polyacrylamide microspheres and light scattering particles are packed in a cellulosic dialysis tubing at the end of a pair of plastic optical fibers. The experimental setup uses a CCD spectrometer as a detector and a 386 compatible personal computer. All parameters can be set by software. Results with both one-dye and two-dye pH sensors are presented.

Citation Download Citation

Eden Januario Netto, John I. Peterson, and Binseng Wang "Fiber optic pH sensor for gastric measurements: preliminary results", Proc. SPIE 1886, Fiber Optic Sensors in Medical Diagnostics, (21 May 1993); https://doi.org/10.1117/12.144828

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