Alteration in the response of fluorescein immobilized in sol-gel thin films as an optical fiber sensing mechanism for pH

Yatao Yang*, Peter A. Wallace, Michael Campbell, A. Sheila Holmes-Smith

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Chemical dye immobilization is very commonly used for optical fiber chemical sensors development. The dye may behave differently in aqueous state and in immobilized state. This paper describes the experimental results on absorption, emission and pH response of chemical indicator sodium fluorescein, both as dissolved in water and immobilized in sol-gel thin film, for optical fiber pH sensors development. It was found that in the sol-gel immobilized state, by altering the dye concentration and excitation/emission wavelength, a wide range of measurements from pH 0.5 to pH 10 is possible.

Original languageEnglish
Title of host publicationProceedings Volume 2895, Fiber Optic Sensors V
EditorsKim D. Bennett, Byoung Yoon Kim, Yanbiao Liao
PublisherSPIE
Pages237-242
Number of pages6
ISBN (Print)0819422967, 9780819422965
DOIs
Publication statusPublished - 24 Sept 1996
EventPhotonics China '96 - Beijing, China
Duration: 6 Nov 19967 Nov 1996

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2895
ISSN (Print)0277-786X

Conference

ConferencePhotonics China '96
Country/TerritoryChina
CityBeijing
Period6/11/967/11/96

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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