A novel fiber optic sensor for the measurement of pH of blood based on colorimetry

A. L. Chaudhari; D. D. Patil; Arvind D. Shaligram

doi:10.1117/12.621490

12 April 2005 A novel fiber optic sensor for the measurement of pH of blood based on colorimetry

A. L. Chaudhari, D. D. Patil, Arvind D. Shaligram

Proceedings Volume 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics; (2005) https://doi.org/10.1117/12.621490
Event: Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, 2004, -, Singapore

Abstract

Fiber optic sensors designed to the date are largely based on monitoring the absorption change of several immobilized indicators or change in fluorescence of fluorometric indicators. The present paper reports a new type of fiber optic sensor for the measurement of blood pH based on Colorimetric principle. The sensor consists of two multimode step index fibers, mirror as reflector and blood serum with universal indicator as medium. LED is used as source and photodiode as detector. The intensity of color produced due to addition of indicator to blood serum depends upon hydrogen ion concentration. The output intensity from receiving fiber is measured as a function of pH of blood. The developed sensor is calibrated against the standard pH meter. The design, construction and calibration details are presented in paper.

Citation Download Citation

A. L. Chaudhari, D. D. Patil, and Arvind D. Shaligram "A novel fiber optic sensor for the measurement of pH of blood based on colorimetry", Proc. SPIE 5852, Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, (12 April 2005); https://doi.org/10.1117/12.621490

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