Lijuan Zhao, Ruoyu Liang, Zhiniu Xu. Brillouin Dynamic Grating Sensor Based on Novel Photonic Crystal Fiber[J]. Acta Optica Sinica, 2021, 41(7): 0706001
- Acta Optica Sinica
- Vol. 41, Issue 7, 0706001 (2021)
Fig. 1. Cross section of the proposed photonic crystal fiber
Fig. 2. Schematic diagram of BDG generation and reading
Fig. 3. Frequency relation of the four waves
Fig. 4. Electric field distribution and energy contour. (a)(b) x polarization; (c)(d) y polarization
Fig. 5. Direction of pressure. (a) Transverse pressure applied along y-polarization axis; (b) transverse pressure applied along x-polarization axis
Fig. 6. Deformation of fiber. (a) Pressure applied along y-polarization axis; (b) pressure applied along x-polarization axis
Fig. 7. Birefringence of the PCF as a function of pressure. (a) Pressure applied along y-polarization axis; (b) pressure applied along x-polarization axis
Fig. 8. Birefringence of the PCF as a function of temperature
Fig. 9. Birefringence-induced frequency shift of the PCF as a function of pressure applied along y-polarization axis
Fig. 10. Reflective spectra with different pressures applied along y-polarization axis for BDG
Fig. 11. Birefringence-induced frequency shift of the PCF as afunction of pressure applied along x-polarization axis
Fig. 12. Reflective spectra with different pressures applied along x-polarization axis for BDG
Fig. 13. Birefringence-induced frequency shift of the PCF as a function of temperature with different pressures
Fig. 14. Reflective spectra with different temperatures
Fig. 15. Birefringence-induced frequency shift of the PCF as a function of pressure with different angles
Fig. 16. Birefringence-induced frequency shift as a function of pressure and temperature with 1%--2% variations of circular air holes diameter. (a) Pressure applied along x-polarization axis; (b) pressure applied along y-polarization axis; (c) temperature
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Table 1. Parameters of fiber structureunit: μm
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