A cheap and practical FBG temperature sensor utilizing a long-period grating in a photonic crystal fiber

Chun Liu Zhao, M. S. Demokan, Wei Jin, Limin Xiao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

53 Citations (Scopus)


A whole temperature sensor in one package utilizing a fiber Bragg grating (FBG) made in a conventional single-mode fiber and which uses a long-period grating (LPG) made in a photonic crystal fiber is proposed and experimentally demonstrated. The function of the interrogation is that the wavelength change of the FBG with environmental temperature is transferred to the intensity of the output via the LPG. Utilizing the temperature-insensitivity of the LPG in the PCF, the interrogation is stable and enables a cheap and practical temperature measurement system with a wide dynamic range.
Original languageEnglish
Pages (from-to)242-245
Number of pages4
JournalOptics Communications
Issue number2
Publication statusPublished - 15 Aug 2007


  • Fiber Bragg grating
  • Fiber sensor
  • Interrogation
  • Long-period grating
  • Photonic crystal fiber

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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