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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Editor: Zhizhan Xu
  • Vol. 10, Iss. 3 — Mar. 1, 2012
  • pp: 030605–

Simultaneous temperature and refractive index measurement of liquid using a local micro-structured fiber Bragg grating

Ye Cao, Yinfei Yang, Xiufeng Yang, and Zhengrong Tong  »View Author Affiliations


Chinese Optics Letters, Vol. 10, Issue 3, pp. 030605- (2012)


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Abstract

An alternative solution for the simultaneous measurement of temperature and refractive index is presented. A local micro-structured fiber Bragg grating (LMSFBG) is formed as the sensing head, in which a standard grating is etched by HF. According to the phase shift theory, the main spectral change of the LMSFBG is the formation of a narrow allowed band, which is strongly dependent on the etching features and the surrounding refractive index. As such, the temperature and refractive index measurements can be achieved by the shifts of the double peaks and narrow allowed band, and their fitting linearity coefficients are 0.996 and 0.994, respectively. Thus, the reflection and transmission peaks of the LMSFBG have a good linear relationship with temperature and refractive index.

© 2012 Chinese Optics Letters

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2390) Fiber optics and optical communications : Fiber optics, infrared

ToC Category:
Fiber Optics and Optical Communications

Citation
Ye Cao, Yinfei Yang, Xiufeng Yang, and Zhengrong Tong, "Simultaneous temperature and refractive index measurement of liquid using a local micro-structured fiber Bragg grating," Chin. Opt. Lett. 10, 030605- (2012)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-10-3-030605


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