Lijuan Zhao, Zhi Liang, Zhiniu Xu. A Twisted Photonic Crystal Fiber Capable of Supporting 66 Orbital Angular Momentum Modes for High-Quality Transmission[J]. Acta Optica Sinica, 2024, 44(16): 1606002
- Acta Optica Sinica
- Vol. 44, Issue 16, 1606002 (2024)
Fig. 1. Fiber structure. (a) Schematic diagram of twisted fiber; (b) cross-section view of fiber simulation
Fig. 2. Variation of confinement loss with wavelength for different modes when outermost two layers of air holes are not present
Fig. 3. Phase diagram of twisted fiber partial mode. (a) HE7,1 mode; (b) HE9,1 mode
Fig. 4. Electric field intensity distribution diagram of twisted fiber partial mode. (a) HE7,1 mode; (b) HE9,1 mode
Fig. 5. Situation where effective refractive index difference between adjacent modes varies with wavelength
Fig. 6. Variation of purity corresponding to each topological charge with wavelength
Fig. 7. Situation where mode field areas of different modes change with wavelength
Fig. 8. Relationship between nonlinear coefficients of different modes and wavelength
Fig. 9. Variation of dispersion with wavelength for different modes
Fig. 10. Variation of confinement loss with wavelength for different modes
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Table 1. Structure parameters of twisted fiber
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