Yang Yang, Xiaotong Zhu, Liangjun Yan, Xuze Cheney, Zhangqi Song. A Highly Accurate Curvature Sensor Based on a Rough Side-Polished Single-Mode Fiber[J]. Acta Optica Sinica, 2020, 40(14): 1406004
- Acta Optica Sinica
- Vol. 40, Issue 14, 1406004 (2020)
Fig. 1. Schematic diagram of the intensity-sensitized fiber curvature sensor
Fig. 2. Transmissivity simulation results of bending optical fiber versus curvature. (a) With different polished depths; (b) with different polished zone lengths
Fig. 3. Schematic diagram of structure and micrograph of sensitive area for curvature sensor based on rough side-polished single mode fiber. (a) Schematic diagram of structure, in which the inset shows the scattering of the polished area when red light is injected;(b)micrograph of sensitive area
Fig. 4. Schematic diagram of pulse self-referenced demodulation system
Fig. 5. Measurement system based on cantilever beam
Fig. 6. Sensor response curve
Fig. 7. Background noise of the demodulation system
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