Magnetostrictive composite-fiber Bragg grating (MC-FBG) magnetic field sensor

Heliang Liu, Siu Wing Or, Hwa Yaw Tam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

62 Citations (Scopus)


We report a magnetostrictive composite-fiber Bragg grating (MC-FBG) magnetic field sensor based on the direct coupling of the magnetostrictive strain in an epoxy-bonded Terfenol-D particle pseudo-1-3 MC actuator with a FBG strain sensor. The MC-FBG sensor exhibits a large and fairly linear quasistatic peak wavelength shift of 0.68 nm under an applied magnetic field of 146 kA/m and a wide extrinsic magneto-optical signal frequency range up to at least 60 kHz. These quasistatic and dynamic characteristics, together with the electromagnetic interference immunity, large-scale multiplexing potential and self-reference capability, enable the application of the MC-FBG sensor in distributed magnetic field sensing over long distances.
Original languageEnglish
Pages (from-to)122-126
Number of pages5
JournalSensors and Actuators, A: Physical
Issue number1
Publication statusPublished - 1 Jan 2012


  • Fiber Bragg grating
  • Long-distance distributed sensing
  • Magnetic field sensor
  • Magnetostrictive composite
  • Terfenol-D

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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