Hanglin Lu, Junhui Hu. High Sensitivity Curvature Sensor Based on SPS Fiber Structure[J]. Laser & Optoelectronics Progress, 2019, 56(8): 080601
- Laser & Optoelectronics Progress
- Vol. 56, Issue 8, 080601 (2019)
Fig. 1. Diagram of SPS fiber sensor structure
Fig. 2. Light path in curvature measurement experiment
Fig. 3. Transmission spectra of sensor after light passing. (a) Light directly passing; (b) light passing after employing Sagnac interferometer
Fig. 4. Spatial frequency spectrum of sensor when the length of PMF is 7 cm
Fig. 5. Interference spectra of curvature measurement for sensor when the length of PMF is 7 cm
Fig. 6. Linear analysis of sensor when length of PMF is 7 cm
Fig. 7. Round trip repeat test of sensor when the length of PMF is 7 cm
Fig. 8. Linear correlation contrast of sensors under different lengths of PMF
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