Sensitivity-enhanced fiber optic temperature sensor with strain response suppression

Jianghai Wo, Qizhen Sun, Hai Liu*, Xiaolei Li, Jiejun Zhang, Deming Liu, Perry Ping Shum

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

A temperature sensor based on a multimode-singlemode-multimode (MSM) fiber structure has been proposed and experimentally demonstrated. By utilizing the interference between fiber core and cladding modes, temperature measurement is exploited by monitoring the selected resonant dips shift of the transmission spectrum. A high temperature sensitivity of 50.65 pm/ºC is achieved at a certain resonant dip, accompanied by a suppressed strain sensitivity of only 0.587 pm/με. The sensor reveals the advantages of easy fabrication and interrogation, low cost and small axial strain response.

Original languageEnglish
Pages (from-to)289-292
Number of pages4
JournalOptical Fiber Technology
Volume19
Issue number4
Early online date6 Apr 2013
DOIs
Publication statusPublished - Aug 2013

Keywords

  • fiber sensors
  • modal interference
  • multimode-singlemode-multimode
  • strain
  • temperature

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