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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 6 — May. 25, 2012

Polymer optical fiber Bragg grating acting as an intrinsic biochemical concentration sensor

Wei Zhang, David Webb, and Gangding Peng  »View Author Affiliations

Optics Letters, Vol. 37, Issue 8, pp. 1370-1372 (2012)

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We demonstrate an intrinsic biochemical concentration sensor based on a polymer optical fiber Bragg grating. The water content absorbed by the polymer fiber from a surrounding solution depends on the concentration of the solution because of the osmotic effect. The variation of water content in the fiber causes a change in the fiber dimensions and a variation in refractive index and, therefore, a shift in the Bragg wavelength. Saline solutions with concentration from 0% to 22% were used to demonstrate the sensing principle, resulting in a total wavelength shift of 0.9 nm, allowing high-resolution concentration measurements to be realized.

© 2012 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(250.5460) Optoelectronics : Polymer waveguides

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: January 19, 2012
Revised Manuscript: February 22, 2012
Manuscript Accepted: February 22, 2012
Published: April 12, 2012

Virtual Issues
Vol. 7, Iss. 6 Virtual Journal for Biomedical Optics

Wei Zhang, David Webb, and Gangding Peng, "Polymer optical fiber Bragg grating acting as an intrinsic biochemical concentration sensor," Opt. Lett. 37, 1370-1372 (2012)

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