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Proceedings Paper

Ultra-small microfiber Bragg grating force sensor with greater sensitivity
Author(s): Wei Luo; Fei Xu; Yan-Qing Lu
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Paper Abstract

We experimentally demonstrate a compact microfiber Bragg grating (MFBG) force sensor that offers greater sensitivity under load. The FBG is fabricated by focused ion beam (FIB) milling a microfiber tapered from nonphotosensitive standard single-mode fiber. It is only ~58μm in length. The force sensitivity of the MFBG is as high as ~4133nm/N around the resonant wavelength of 1550nm, which is three orders of magnitude larger than that recorded in FBGs inscribed in untapered fibers.

Paper Details

Date Published: 26 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 8421CF (26 October 2012); doi: 10.1117/12.2012447
Show Author Affiliations
Wei Luo, Nanjing Univ. (China)
Fei Xu, Nanjing Univ. (China)
Yan-Qing Lu, Nanjing Univ. (China)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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