Optical fiber sensor for curvature and temperature simultaneous measurement based on an anti-resonance mechanism

Zhang, Yaxun; Huang, Zhiliang; Liu, Yuxin; Huang, Pingbang; Tang, Xiaoyun; Liu, Zhihai; Zhang, Yu; Yuan, Libo

doi:10.1016/j.optlastec.2024.111131

Optics & Laser Technology

2024

DOI: 10.1016/j.optlastec.2024.111131

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Optical fiber sensor for curvature and temperature simultaneous measurement based on an anti-resonance mechanism

Yaxun Zhang,

Zhiliang Huang,

Yuxin Liu

et al.

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A temperature compensation method for fiber Bragg gratings using negative thermal expansive β-eucryptite packaging

Qiao,

Zhang,

Chen

et al. 2024

Meas. Sci. Technol.

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Fiber optic sensing measurements hold significant potential for various applications, but temperature compensation of fiber Bragg grating (FBG) remains a formidable challenge. This paper introduces the utilization of β-eucryptite as an encapsulation material for FBG, exploiting its negative thermal expansion (NTE) property to achieve temperature compensation. A two-point adhesive sealing technique was employed to affix FBG to the β-eucryptite substrate. While bare FBG and sensors encapsulated in 7075 aluminum alloy served as comparison. Experimental outcomes reveal that the FBG encapsulated in β-eucryptite exhibits temperature sensitivities of 1.67 pm/℃ within the temperature ranges of -30°C to 150°C. In contrast, bare FBG and sensor encapsulated with 7075 aluminum alloy display temperature sensitivities of 10.46 pm/°C and 37.31 pm/°C, respectively. The use of β-eucryptite for sensor encapsulation effectively reduces the temperature sensitivity of FBG. This temperature compensation method is straightforward yet promising and has great potential in aerospace and precision instrument measurement.

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A temperature compensation method for fiber Bragg gratings using negative thermal expansive β-eucryptite packaging

Qiao,

Zhang,

Chen

et al. 2024

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

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Optical fiber sensor for curvature and temperature simultaneous measurement based on an anti-resonance mechanism

Cited by 1 publication

References 49 publications

A temperature compensation method for fiber Bragg gratings using negative thermal expansive β-eucryptite packaging

A temperature compensation method for fiber Bragg gratings using negative thermal expansive β-eucryptite packaging

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