Strain measurement based on fixed wavelength transmission of tapered long-period fiber grating

• Autorzy: Tang Yong , Zhang Hao , Zhang Li , Yu Xin Feng , Bai Yun Feng

Identyfikatory

DOI

10.37190/oa220403

• Języki publikacji: EN

Abstrakty

EN

This paper studies the relationship between transmission intensity and strain based on tapered long-period fiber grating at a fixed wavelength. In experiments, tapered long-period fiber grating was prepared by the electric melting method. Experimental results show that two resonance peaks appeared at 1482 and 1537 nm, respectively. Here is the elaboration of the relationship between the resonant wavelength and the strain, its wavelength-strain sensitivity is 20 pm/με, and the linearity was negative. Then our next study was about the relationship between transmission intensity and strain at a fixed wavelength. The results show that the transmission intensity at a fixed wavelength is related to the exponent with strain. The coupled-mode theory is applied to simulate the relationship between fixed wavelength and strain. The simulation results matched the experimental results. Two fixed wavelength transmission intensity ratio was used, and the ratio showed a linear relationship with the strain, and the slope is –0.018 dB/με. Therefore, within the 0.01% resolution of our detector, we could resolve a 0.16 με strain change. We can select the appropriate light source and detector to achieve higher measurement accuracy. Thus, there is a great potential in fiber grating strain sensors.

Słowa kluczowe

EN

tapered fiber; long-period fiber; fiber grating; strain sensor; fixed dual-wavelength ratio

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2022
• Tom: Vol. 52, nr 4
• Strony: 511--519
• Opis fizyczny: Bibliogr. 24 poz., rys.

Twórcy

autor

Tang Yong

• Key Laboratory of Micro Nano Optoelectronic Devices and Intelligent Perception Systems, School of Electronic Information and Engineering, in Yangtze Normal University, Chongqing, 408100, China

autor

Zhang Hao

• Key Laboratory of Micro Nano Optoelectronic Devices and Intelligent Perception Systems, School of Electronic Information and Engineering, in Yangtze Normal University, Chongqing, 408100, China

autor

Zhang Li

• Key Laboratory of Micro Nano Optoelectronic Devices and Intelligent Perception Systems, School of Electronic Information and Engineering, in Yangtze Normal University, Chongqing, 408100, China

autor

Yu Xin Feng

• Key Laboratory of Micro Nano Optoelectronic Devices and Intelligent Perception Systems, School of Electronic Information and Engineering, in Yangtze Normal University, Chongqing, 408100, China

autor

Bai Yun Feng

• Key Laboratory of Micro Nano Optoelectronic Devices and Intelligent Perception Systems, School of Electronic Information and Engineering, in Yangtze Normal University, Chongqing, 408100, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).