Highly sensitive long period fibre grating temperature sensor

S. Y. Liu, Hwa Yaw Tam, M. S. Demokan

Research output: Journal article publicationConference articleAcademic researchpeer-review

3 Citations (Scopus)


A novel technique to increase the temperature sensitivity of LPGs by exploiting the relatively large thermal coefficient of index-matching fluid to induce a large spectral shift of the LPG is reported in this paper. It is shown that the wavelength shift with temperature for such a LPG sensor can be as much as 1,500 times larger than that of sensors made of fibre Bragg gratings. A LPG-based temperature sensor with a resolution of about 0.03°C is reported.
Original languageEnglish
Pages (from-to)282-286
Number of pages5
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1 Dec 2001
EventPhotonic Systems and Applications - Singapore, Singapore
Duration: 27 Nov 200130 Nov 2001


  • Highly sensitive temperature sensor
  • Long period fiber grating
  • Thermal index fluid

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


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