Tilted fiber Bragg grating-based accelerometer

Tuan Guo, Liyang Shao, Hoyin Au, Hwa Yaw Tam, Jacques Albert

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


A power-referenced fiber-optic accelerometer is proposed by using a weakly tilted fiber Bragg grating (TFBG) combined with a lateral-misaligned splice structure. The recoupling of lower-order cladding modes (ghost modes), excited by the TFBG, to the fiber core via a slightly lateral-offset slice is sensitive to vibration and can be unambiguously determined by monitoring the power change in reflection, avoiding complex wavelength interrogation. However, the Bragg resonance is virtually unaffected by fiber bending and it can be used as a power reference to cancel out any light source fluctuations. Combining with a polymer tube package, the novel sensing configuration presents a linear and reproducible response for acceleration measurement.
Original languageEnglish
Title of host publication20th International Conference on Optical Fibre Sensors
Publication statusPublished - 17 Nov 2009
Event20th International Conference on Optical Fibre Sensors - Edinburgh, United Kingdom
Duration: 5 Oct 20099 Oct 2009


Conference20th International Conference on Optical Fibre Sensors
Country/TerritoryUnited Kingdom


  • Accelerometer
  • Tilted fiber Bragg gratings
  • Vibration

ASJC Scopus subject areas

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


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