Yanxia Shen, Shulin Song, Xingxing Tong, Haowei Wang, Yu Guo. Fiber Laser Temperature Sensing System Based on Beat Frequency Demodulation[J]. Laser & Optoelectronics Progress, 2023, 60(1): 0106004
- Laser & Optoelectronics Progress
- Vol. 60, Issue 1, 0106004 (2023)
Fig. 1. Multi-longitudinal mode fiber laser sensor temperature measurement system. (a) Temperature measurement system; (b) automatic data acquisition process
Fig. 2. Beat frequency signals collected at different time
Fig. 3. Finding the position of the center point of the rectangular frame
Fig. 4. Position change of the center point of the beat signal
Fig. 5. Position change of the center point of the beat frequency signal at different temperatures
Fig. 6. Variation curve of the center point position of beat frequency signal with temperature
Fig. 7. Temperature response of beat frequency signal
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