Meng LI, Xiuquan MA, Chunquan HONG, Chang HU, Tianyu XU. Real-time and High Accuracy Alignment Method of Polarization- maintaining Fiber Based on Back Projection Light through Matching Liquid[J]. Acta Photonica Sinica, 2022, 51(4): 0406002
- Acta Photonica Sinica
- Vol. 51, Issue 4, 0406002 (2022)
Fig. 1. The imaging picture obtained by the POL method on the existing experimental device
Fig. 2. Side-view imaging of polarization-maintaining fiber in matching liquid
Fig. 3. Schematic of polarization-maintaining fiber at polarization axis of 90°
Fig. 4. When rotating forward 110°，part of the polarization-maintaining fiber images captured by the CCD and normalized data
Fig. 5. When rotating to special angles，part of the PM fiber images captured by the CCD
Fig. 6. Relative distance of diffraction fringes at different angles
Fig. 7. The geometric relationship between the angle of the polarization axis θ and
Fig. 8. Operation flow chart of alignment polarization axis
Fig. 9. Three cross-sectional schematic diagrams when the stress zone distribution of PMFs are asymmetric
Fig. 10. The simulated relationship between eigenvalues and polarization axis angle when radius of panda eyes are inconsistent
Fig. 11. Detected normal characteristic of the tested data with the polarization angle
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Table 1. Angle deviation ratio of real-time alignment method
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