Fig. 1. Schematic diagram of non-line-of-sight azimuth transmission system based on polarization-maintaining fiber

Fig. 2. Cross-section of Panda polarization-maintaining fiber

Fig. 3. Stress component. (a) ; (b) 应力张量。(a) ；(b)

Fig. 4. Refractive index diagram of fiber core region

Fig. 5. Stress component along 沿 方向应力张量

Fig. 6. Birefringence curve of Panda polarization- maintaining fiber core

Fig. 7. Schematic diagram of the relationship between the distance between fiber core and stress zone and birefringence

Fig. 8. Schematic diagram of relationship between birefringence and radius of saps

Fig. 9. Schematic diagram of relationship between birefringence and temperature. (a) Birefringence diagram of below 0 ℃; (b) Birefringence diagram of above 0 ℃

Fig. 10. Schematic diagram of relationship between birefringence and reference temperature

Fig. 11. Schematic diagram of relationship between birefringence and the ratio of core to clad

Fig. 12. Stress component. (a) ; (b) 应力张量。(a) ；(b)

Fig. 13. Birefringence curve of bow tie polarization- maintaining fiber core