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Proceedings Paper

Temperature-independent displacement sensor based on the chirped grating in a microfiber taper
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Paper Abstract

We demonstrate a temperature-independent displacement sensor by inscribing a periodic grating in a microfiber taper with assistance of the 193-nm ultraviolet exposure technique. The obtained bandwidth is as large as 29.64nm for the grating with diameter of 3.8~6.38μm and length of 6.2mm, respectively. When the displacement is increased from 0 to 1.08mm, the reflecting bandwidth reduces to 3.38nm gradually, producing an average sensitivity of around −22.8nm/mm. The minimum displacement of measurement is ~4.39×10−4mm considering the wavelength resolution of 10pm in the optical spectrum analyzer. Moreover, the temperature-cross sensitivity is suppressed.

Paper Details

Date Published: 15 October 2013
PDF: 4 pages
Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 89242V (15 October 2013); doi: 10.1117/12.2034191
Show Author Affiliations
Xiang Shen, Jinan Univ. (China)
Jie Li, Jinan Univ. (China)
Li-Peng Sun, Jinan Univ. (China)
Yang Ran, Jinan Univ. (China)
Long Jin, Jinan Univ. (China)
Bai-ou Guan, Jinan Univ. (China)

Published in SPIE Proceedings Vol. 8924:
Fourth Asia Pacific Optical Sensors Conference
Minghong Yang; Dongning Wang; Yun-Jiang Rao, Editor(s)

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