Highly sensitive temperature sensor using long period fibre grating

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

Research output: Journal article publicationConference articleAcademic researchpeer-review

3 Citations (Scopus)


In this paper, we report a novel technique to increase the temperature sensitivity of a LPG by nearly two hundred times by exploiting the extremely large dependence of the spectral shift of an LPG on its ambient refractive index. The temperature coefficient of the packaged LPG sensor was measured to be 8.8 nm/°C from 16°C to 20°C which is about 180 times higher than an unpackaged LPG. Correspondingly, it is about 800 times more sensitive than a fibre Bragg grating sensor which has a typical temperature coefficient of 0.011 nm/°C.
Original languageEnglish
Pages (from-to)229-236
Number of pages8
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 1 Jan 2000
EventApplications of Optical Fiver Sensor - Glasgow, United Kingdom
Duration: 22 May 200024 May 2000

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


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