BirefringentMicrofiber-Based Fiber LoopMirrors for Tunable Filters and Refractive Index Sensors

Wa Jin, Haifeng Xuan, Wei Jin

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

2 Citations (Scopus)


Highly birefringent (Hi-Bi) microfiber-based fiber loop mirrors (FLMs) were studied for tunable comb filters and refractive index (RI) sensors. RI sensitivity of up to 15,441 nm/RIU was experimentally demonstrated for the RI sensors and, for the tunable filter a thermal tuning coefficient of ∼-2.35nm/ was obtained for temperature from 20 to 90 when it was immersed into water. The use of two cascaded Hi-Bi micro-tapers within a Sagnac loop allows more flexibility in controlling the transmission/reflection spectraums of the FLM. The length of the tapered Hi-Bi microfibers is on the order of centimeters, two orders of magnitude shorter than the conventional Hi-Bi fiber-based devices.
Original languageEnglish
Title of host publicationFifth European Workshop on Optical Fibre Sensors
Publication statusPublished - 24 Sep 2013
Event5th European Workshop on Optical Fibre Sensors, EWOFS 2013 - Krakow, Poland
Duration: 19 May 201322 May 2013


Conference5th European Workshop on Optical Fibre Sensors, EWOFS 2013


  • Comb-filter
  • Microfibers
  • Optical fiber sensor
  • Refractive index sensor
  • Sagnac loop mirror

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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