Temperature independent strain sensor based on intensity measurement using a highly biréfringent photonic crystal fiber loop mirror

Chun Liu Zhao, Xingyong Dong, Shuqin Zhang, Wei Jin

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


A fiber-optic strain sensor is demonstrated by using a short length of highly birefringent photonic crystal fiber (PCF) as the sensing element inserted in a fiber loop mirror (FLM). Due to the ultralow thermal sensitivity of the PCF, the proposed strain sensor is inherently insensitive to temperature. When a DFB laser passes through the FLM, the output power will only be affected by the transmission spectral change of the FLM caused by the strain applied on the PCF. Based on intensity measurement, an optical power meter is adequate to deduce the strain information and an expensive optical spectrum analyzer (OSA) would not be needed.
Original languageEnglish
Title of host publicationOptical Sensors and Biophotonics
Publication statusPublished - 1 Dec 2009
EventOptical Sensors and Biophotonics - Shanghai, China
Duration: 2 Nov 20096 Nov 2009


ConferenceOptical Sensors and Biophotonics


  • Fiber loop mirror (FLM)
  • Highly birefringent photonic crystal fiber (HiBi-PCF)
  • Intensity measurement
  • Strain senor

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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