Weiwen Fan, Hongdan Wan, Yufang Chen, Jinjin Zhao, Jingyi Mao, Rui Zhou. Highly Sensitive Fiber Optic Temperature Sensor Based on Two-Mode-Single-Mode Microfiber Sagnac Loop[J]. Acta Optica Sinica, 2022, 42(16): 1606001
- Acta Optica Sinica
- Vol. 42, Issue 16, 1606001 (2022)
Fig. 1. Schematic diagram of TS-MSL ultra-high sensitive temperature sensor structure
Fig. 2. Simulation analysis results of optical field transmission of different micro-nano fiber Sagnac rings. (a) Ordinary SMF micro-nano fiber Sagnac ring; (b) TS-MSL
Fig. 3. Simulation results of different coupling lengths
Fig. 4. Comparison between experimental transmission spectrum of TMF and simulated transmission spectrum at 45000 μm
Fig. 5. Comparison of temperature sensitivity simulation results of micro-nano fiber Sagnac rings based on SMF and TMF
Fig. 6. Physical image of TS-MSL (diagram of cone area microscope after packaging PDMS, with insert image showing TMF cross-sectional view of cone area)
Fig. 7. Diagram of experimental setup
Fig. 8. Comparison of interference spectra of normal single-mode micro-nano fiber Sagnac loop under three different cone diameters
Fig. 9. Temperature sensing experiment results of normal SMF micro-nano fiber Sagnac ring. (a) Interference spectra at different temperatures; (b) fitting curve of wavelength-temperature
Fig. 10. Experimental results of TS-MSL temperature sensing. (a) Interference spectra at different temperatures; (b) fitting curve of wavelength-temperature
Fig. 11. Comparison of interference spectra of TS-MSL before and after packaging PDMS
Fig. 12. Temperature sensing experiment results of TS-MSL after adding PDMS package. (a) Interference spectra at different temperatures; (b) fitting curve of wavelength-temperature
Fig. 13. Linear fitting curves of wavelength shifts for temperature rise and fall
|
Table 1. Comparison of parameters between proposed TS-MSL and other temperature sensors
Set citation alerts for the article
Please enter your email address
© Copyright 2018-2021 | Chinese Laser Press. All Rights Reserved 沪ICP备15018463号-20