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Proceedings Paper

pH-responsive hydrogel coated fiber Bragg grating-based chemo mechanical sensor bioreactor applications
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Paper Abstract

This paper describes a fiber optics based pH sensor by using wavelength modulated techniques. Fiber Bragg grating (FBG) is functionalized with a stimulus responsive hydrogel which induces a strain on FBG due to mechanical expansion of the gel in response to ambient pH changes. The gel is synthesized from the blends of Poly (vinyl alcohol)/Poly (acrylic acid). The induced strain results in a shift of FBG reflected peak which is monitored by an interrogator. The sensor system shows a good linearity in acidic pH range of 3 to 7 with a sensitivity of 12.16pm/pH. Besides that it shows good repeatability which proves it to be fit for pH sensing applications.

Paper Details

Date Published: 18 April 2017
PDF: 4 pages
Proc. SPIE 10251, Biomedical Imaging and Sensing Conference, 1025120 (18 April 2017); doi: 10.1117/12.2270474
Show Author Affiliations
V. N. Kishore P., National Institute of Technology, Warangal (India)
Sai Shankar M., National Institute of Technology, Warangal (India)

Published in SPIE Proceedings Vol. 10251:
Biomedical Imaging and Sensing Conference
Toyohiko Yatagai; Yoshihisa Aizu; Osamu Matoba; Yasuhiro Awatsuji, Editor(s)

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