Temperature sensing capacity of fiber Bragg grating at liquid nitrogen temperature

doi:10.1007/s12200-008-0054-9

Front Optoelec Chin

2008, Vol. 1

Issue (3-4) : 223-225 https://doi.org/10.1007/s12200-008-0054-9

Research Article

Temperature sensing capacity of fiber Bragg grating at liquid nitrogen temperature

Guoli CAI¹(

), Wei JIAN²

1. State Intellectual Property Office of the People's Republic of China; 2. Lightwave Technology Institute, Beijing Jiaotong University

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Abstract

According to the temperature sensing model of the fiber Bragg grating (FBG), a theoretical method of temperature sensing capacity of FBG is proposed. Based on the temperature sensing model of FBG, a temperature sensing experiment was completed at liquid nitrogen temperature (-196°C). The theoretical and experimental results were compared and analyzed, which show that at liquid nitrogen temperature or in a large-scope temperature sensing, the relationship between thermal variation ΔT and relative shift of reflected center wavelength Δλ_B/λ_B of FBG is nonlinear and conic multinomial.

Keywords fiber Bragg grating (FBG) optical fiber sensing temperature sensing liquid nitrogen temperature

Corresponding Author(s): CAI Guoli,Email:gl_cai23@yahoo.com.cn

Issue Date: 05 September 2009

Cite this article:

Guoli CAI,Wei JIAN. Temperature sensing capacity of fiber Bragg grating at liquid nitrogen temperature[J]. Front Optoelec Chin, 2008, 1(3-4): 223-225.

URL:

https://academic.hep.com.cn/foe/EN/10.1007/s12200-008-0054-9
https://academic.hep.com.cn/foe/EN/Y2008/V1/I3-4/223

Fig0 Experimental equipment of thermal sensing

Tab0 Measurement dada of temperature sensing(nm)

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