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Proceedings Paper

Laser-machined cascaded micro cavities for simultaneous measurement of dual parameters
Author(s): Zengling Ran; Cheng Li; Min Ni; En Lu; Yunjiang Rao
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Paper Abstract

Fiber-optic cascaded micro Fabry-Perot (F-P) cavities fabricated by 157-nm laser micromachining is demonstrated, for simultaneous measurement of high temperature and refractive index, or high temperature and strain, respectively. The sensor head consists of a short air extrinsic F-P cavity and an intrinsic single-mode fiber F-P cavity. These two micro cavities possess different response coefficients to temperature, stain and refractive index, which are ultilized for dual parameters measurement. Experimental results shows dual parameters meausurement could been achived from 50℃ ~380℃ based on such a sensing structure.

Paper Details

Date Published: 7 November 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842187 (7 November 2012); doi: 10.1117/12.975253
Show Author Affiliations
Zengling Ran, Univ. of Electronic Science and Technology of China (China)
Cheng Li, Univ. of Electronic Science and Technology of China (China)
Min Ni, Univ. of Electronic Science and Technology of China (China)
En Lu, Univ. of Electronic Science and Technology of China (China)
Yunjiang Rao, Univ. of Electronic Science and Technology of China (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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