Zhikang Zhuang, Yuangang Lu, Jianqin Peng, Chongjun He. Fiber-Optic Macrobending-Based Temperature Sensor with Polyimide Coating[J]. Acta Optica Sinica, 2022, 42(7): 0706008
- Acta Optica Sinica
- Vol. 42, Issue 7, 0706008 (2022)
Fig. 1. Schematic of bending state of fiber-optic with coating
Fig. 2. Curves of fiber-optic bending loss with bending radius at different temperatures
Fig. 3. Local magnification of three loss peaks in Fig. 2 . (a) Bending radius is 7.7 mm; (b) bending radius is 9.1 mm; (c) bending radius is 10.9 mm
Fig. 4. Curves of fiber bending loss with temperature at different bending radii
Fig. 5. Curve fitting results of loss with temperature at 9.15 mm bending radius. (a) Linear fitting and polynomial fitting curves; (b) fitting residuals of two fitting methods
Fig. 6. Preparation process of fiber-optic temperature sensor
Fig. 7. 1060-XP fiber-optic sensor with polyimide coating
Fig. 8. Schematic of fiber-optic macrobending temperature sensor
Fig. 9. Curve of fiber-optic macrobending loss with temperature at 9.15 mm bending radius. (a) Temperature range is -20--100 ℃; (b) temperature range is 0--80 ℃
Fig. 10. Stability test results of sensor at 9.15 mm bending radius and 90 ℃ temperature
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Table 1. Parameters of 1060-XP optical fiber
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Table 2. Comparison of parameters of different fiber-optic macro-bend temperature sensors
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