Temperature Sensor Based on Chirped Fiber Bragg Grating Laser

被引：0
|
作者：
Luo Z. [1 ,2 ]
He W. [1 ,2 ]
Dong M.-L. [1 ,2 ]
Zhang W. [1 ,2 ]
机构：
[1] Key Laboratory of The Ministry of Education for Optoelectronic Measurement Technology and Instrument, Beijing Information Science and Technology University, Beijing
[2] Beijing Laboratory of Optical Fiber Sensing and Systems, Beijing Information Science and Technology University, Beijing
来源：
Faguang Xuebao/Chinese Journal of Luminescence | 2021年 / 42卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Chirped fiber Bragg grating; Fiber laser; Saturable absorbers; Temperature sensing;
D O I：
10.37188/CJL.20210304
中图分类号：
学科分类号：
摘要：
An annular cavity erbium-doped fiber laser is put forward and designed, and used in the temperature measurement. Using chirped fiber Bragg grating for optical filtering and unpumped erbium-doped fiber as saturable absorber to stabilize the frequency, the single-wavelength laser output of annular cavity erbium-doped fiber laser is realized. Through the temperature experiment, the single-wavelength laser output is realized for temperature sensing measurement. When the output power of the pump source is 219 mW, the single-wavelength laser output of 1 555.25 nm is realized, 3 dB linewidth is 0.06 nm, and the signal-to-noise ratio(SNR) is 47.05 dB. In the experiment, the stability of the single-wavelength laser of 1 555.25 nm is tested, and the output power change is 0.59 dB during 10 min. The temperature sensitivity is 12.59 pm/℃ and the linearity is 0.998 6. The temperature sensitivity of the cooling process is 12.58 pm/℃, and the linearity is 0.998 3. The laser stability was tested at different temperatures. During 10 min, the output powers of the laser at 50 ℃ and 300 ℃ are 0.27 dB and 0.09 dB, respectively. © 2021, Science Press. All right reserved.
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页码：1928 / 1935
页数：7
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