Intensity-modulated micro-displacement sensor with an embedded fiber dual cladding modes interferometer

Bo Dong, Yixin Wang, Changyuan Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

5 Citations (Scopus)


We propose a novel fiber micro-displacement sensor based on an embedded fiber dual cladding modes interferometer. This type of interferometer has a very high extinction ratio (ER) of 27.7 dB, with only one very deep resonance dip within C and L bands, enabling it to be used as an intensity-modulated sensor. With it embedded in a cured carbon fiber composites based beam, it shows a high sensitivity response to micro-displacement in ER variation. Experimental results show that there is a quasi-linear relationship between the micro-displacement and its ER variation, with the measurement resolution of 4.67 μm, and the dynamic measurement range of 0∼200 Hz.
Original languageEnglish
Pages (from-to)334-337
Number of pages4
JournalSensors and Actuators, A: Physical
Publication statusPublished - 1 Dec 2015
Externally publishedYes


  • Fiber dual cladding modes interferometer
  • Fiber interferometer
  • Key words Fiber sensor
  • Micro-displacement sensor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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