Highly sensitive compact force sensor based on microfiber bragg grating

Kit Man Chung, Zhengyong Liu, Chao Lu, Hwa Yaw Tam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

38 Citations (Scopus)


We present and demonstrate a miniature contact force sensor based on a 30-$\mu{\rm m}$ diameter microfiber Bragg grating. The microfiber Bragg grating packaged in a conforming elastomer material features an extremely high sensitivity of 1.37 mN and excellent linearity up to a contact force of 0.65 N. The performances were experimentally characterized and meet all the essential specifications as minimally invasive surgery devices for catheters' applications. The novel force sensor is easy to fabricate and thus potentially low cost.
Original languageEnglish
Article number6146402
Pages (from-to)700-702
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number8
Publication statusPublished - 18 Apr 2012


  • Fiber Bragg grating
  • force sensor
  • optical fiber sensor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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