High-sensitivity force measurement using optical tapered fiber with optical frequency-domain reflectometry

Xiaozhen Wang; Wenhai Li; Liang Chen; Xiaoyi Bao

doi:10.1117/12.975074

17 October 2012 High-sensitivity force measurement using optical tapered fiber with optical frequency-domain reflectometry

Xiaozhen Wang, Wenhai Li, Liang Chen, Xiaoyi Bao

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84211F (2012) https://doi.org/10.1117/12.975074
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

Optical fiber taper is proposed to be a high-sensitivity force sensor by using high-resolution, high-sensitivity optical frequency-domain reflectometry technique. The cross-correlation wavelength shift in the uniform region of taper is related to the refractive index change of the fundamental mode. The wavelength-force sensitivity of a fiber taper is dramatically improved due to its reduced waist diameter. It was demonstrated that that a taper with a waist diameter of ~6μm has a force resolution of 6.35μN and a force sensitivity of 620.83nm/N, which is about 500 times higher than that of SMF, over its uniform taper range with a spatial resolution of 3.85mm.

Citation Download Citation

Xiaozhen Wang, Wenhai Li, Liang Chen, and Xiaoyi Bao "High-sensitivity force measurement using optical tapered fiber with optical frequency-domain reflectometry", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84211F (17 October 2012); https://doi.org/10.1117/12.975074

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