A distributed optical fibre fluorosensor for pH measurement

P. A. Wallace*, M. Campbell, Y. Yang, A. S. Holmes-Smith, M. Uttamlal

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)

Abstract

A novel distributed optical fibre pH sensor is reported. The principle of operation of the system is based on the detection of time-resolved fluorescence originating at spatially separated sensor sites. Sodium Fluorescein is used as the pH indicator. The fluorophor is immobilised in porous sol-gel films laid over the fibre core. The distributed system has a spatial range of 100 m and a resolution of the order of 1 m. The pH range of the system is observed to be pH 7-11.

Original languageEnglish
Pages (from-to)1017-1019
Number of pages3
JournalJournal of Luminescence
Volume72-74
DOIs
Publication statusPublished - Jun 1997

Keywords

  • Distributed sensor
  • Fluorescence
  • Optical fibre
  • pH

ASJC Scopus subject areas

  • Biophysics
  • Atomic and Molecular Physics, and Optics
  • General Chemistry
  • Biochemistry
  • Condensed Matter Physics

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