Acta Photonica Sinica, Volume. 50, Issue 9, 0906006(2021)
Design， Fabrication and Performance Research of a High Precision FBG Micro-displacement Sensor with Temperature Compensation
Figures & Tables(10)
Fig. 1. Schematic diagram of FBG displacement and temperature compensation sensor designed in this paper （FBG1： displacement； FBG2： temperature）
Fig. 2. Test diagram of FBG displacement and temperature compensation sensor system
Fig. 5. Test diagram of temperature compensation of FBG displacement sensor with different substrates
Fig. 6. Fitting curve of temperature and wavelength drift of FBG displacement sensor
Fig. 7. Temperature compensation error diagram of FBG displacement sensor
Table 1. Table for calculation and analysis of standard deviation of each shift point
View tableView in ArticleTable 1. Table for calculation and analysis of standard deviation of each shift point
Displacement x/mm Positive stroke deviation
Δx/（×10-3 nm）
Reverse stroke deviationΔx/（×10-3 nm） 0 1.155 1.528 1 1.732 1.000 2 1.000 1.732 3 1.000 2.082 4 1.732 1.732 5 2.309 1.155 6 1.000 1.732 7 0.577 1.155 8 2.646 1.155 9 1.528 1.528 10 1.528 1.528
Table 2. Temperature compensation performance of displacement sensors with quartz and aluminum alloy as substrates
View tableView in ArticleTable 2. Temperature compensation performance of displacement sensors with quartz and aluminum alloy as substrates
Substrate Heating period T/℃ Maximum wavelength difference Δλ/pm wavelength difference
stabilization time t/min
Quartz tube 25~35 40 4.3 35~45 38 3.9 45~55 26 4.1 Aluminum alloy tube 25~35 44 5.8 35~45 38 6.6 45~55 27 6.8 Without substrate 25~35 47 5.3 35~45 42 4.5 45~55 39 4.8
Table 3. Quartz substrate fiber grating displacement sensor temperature error analysis table
View tableView in ArticleTable 3. Quartz substrate fiber grating displacement sensor temperature error analysis table
Temperature T/℃ The theory of displacement x1/mm The actual displacement
x2/mm
Absolute deviation of hysteresis Δx/mm 25 5 5.008 0.008 35 5 5.013 0.013 45 5 4.994 0.006 55 5 5.007 0.007
Tools
Get Citation
Copy Citation Text
Zhenwei CHEN, Huanquan CHEN, Wenhui SHI, Jianyu LI, Jiajin ZHENG, Wei WEI. Design， Fabrication and Performance Research of a High Precision FBG Micro-displacement Sensor with Temperature Compensation[J]. Acta Photonica Sinica, 2021, 50(9): 0906006
Paper Information
Category: Fiber Optics and Optical Communications
Received: Mar. 25, 2021
Accepted: May. 19, 2021
Published Online: Oct. 22, 2021
The Author Email: ZHENG Jiajin (zhengjj@njupt.edu.cn)
© Copyright 2018-2021 | Chinese Laser Press.
All Rights Reserved 沪ICP备15018463号-20