K. M. Chung, Z. Liu, C. Lu, and H. Tam, "Contact force sensor based on microfiber Bragg grating,"
in National Fiber Optic Engineers Conference,
OSA Technical Digest
(Optical Society of America, 2012), paper JW2A.29.
We demonstrate a miniature contact force sensor based on a 30-µm diameter microfiber Bragg grating packaged with a conforming elastomer material features extremely high sensitivity up to 0.8-mN to contract force.