The study of temperature measurement based on the transmission of fixed wavelengths for helical long-period grating

• Autorzy: Bai Yunfeng , He Zelong , Dang Suihu

Identyfikatory

DOI

10.37190/oa220110

• Języki publikacji: EN

Abstrakty

EN

This research involves a fixed wavelength and dual-wavelength ratio temperature measurement for helical long-period grating. There are two resonant dips near 1475 and 1520 nm, with the pitch length 782 μm. The temperature sensitivity of resonance wavelengths is about 0.06 nm/°C. Both theoretical simulation and experiment results show that the transmission of a fixed wavelength linearly changes with the temperature. It has a high application value for measuring temperature. Besides, the dual-wavelength ratio is studied to eliminate the influence of light source. The temperature sensitivity of transmission intensity ratio of I_1469.6nm/I₀ and I_1469.6nm/I_1526.5nm are about 1.0076/°C and 0.0155/°C, respectively, so the dual-wavelength ratio is more practical. And the 0.0155 times intensity change could be much more easily measured than the 0.06 nm wavelength change for each degree Celsius. So the dual-wavelength ratio of the helical long-period gratings is very suitable for temperature sensors.

Słowa kluczowe

EN

helical long-period grating; fixed wavelength; dual-wavelength ratio; temperature sensor

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2022
• Tom: Vol. 52, nr 1
• Strony: 129--137
• Opis fizyczny: Bibliogr. 26 poz., rys.

Twórcy

autor

Bai Yunfeng

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

autor

He Zelong

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

autor

Dang Suihu

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

Bibliografia

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