Optical fiber humidity sensor with a fast response time using the ionic self-assembly method

  • Francisco J. Arregui*
  • , Kristie L. Cooper
  • , Yanjing Liu
  • , Ignacio R. Matias
  • , Richard O. Claus
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

58 Citations (Scopus)

Abstract

An optical fiber humidity sensor was fabricated forming a nanometer-scale Fabry-Perot interferometer by using the Ionic Self-Assembly Monolayer (ISAM) method. The materials used were Poly R-478 and poly(diallyldimethyl ammonium chloride). Taking advantage of the precision that the ISAM method can achieve in controlling the length of the nano cavity, the length was fit to obtain a maximum variation of 8. 7 dB of reflected optical power between 11. 3% and 85% RH. The sensor exhibited a fast response time and was able to monitor the human breathing.

Original languageEnglish
Pages (from-to)360-364
Number of pages5
JournalIEICE Transactions on Electronics
VolumeE83-C
Issue number3
DOIs
Publication statusPublished - 2000
Externally publishedYes

Keywords

  • Fabry-Perot
  • Humidity sensor
  • Ionic self-assembly monolayer
  • Optical fiber

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