Jiale GAO, Yuqiang YANG, Xiaoguang MU, Yuying ZHANG, Yuting LI, Yitong LI. Fiber-optic temperature sensor based on enhanced Vernier effect[J]. Optics and Precision Engineering, 2023, 31(24): 3531
- Optics and Precision Engineering
- Vol. 31, Issue 24, 3531 (2023)
Fig. 1. Experimental setup of the proposed temperature sensor based on enhanced vernier effect
Fig. 2. Interference spectrum of FPI，SI and Cascade
Fig. 3. Interference spectra at different temperatures
Fig. 4. Interference spectra of cascade sensors at different temperatures （a） T 0 ℃； （b） T 0+1 ℃
Fig. 5. FPI microscope drawing （a）and SI physical drawing （b）
Fig. 6. Interference spectra and peak wavelength curves of FPI,SI，cascade sensors at different temperatures
Fig. 7. Peak wavelength shift of spectral envelope with temperature rising and falling
Fig. 8. Stability experiment
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Table 1. Comparison of structure and sensitivity of Vernier effect temperature sensors
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