Jiashuai CAO, Hongzhi JIA. Generation of orbital angular momentum mode based on photonic crystal fiber[J]. Optical Instruments, 2022, 44(4): 73

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- Optical Instruments
- Vol. 44, Issue 4, 73 (2022)

Fig. 1. Cross-sectional view of two-dimensional optical fiber structure and structural parameters

Fig. 2. Electric field intensity and phase diagram

Fig. 3. The effective refractive index of HE4,1 odd and even modes, as well as generated OAM mode distance, as a function of wavelength

Fig. 4. The relationship between the distance and wavelength of the OAM mode when d 2 changes

Fig. 5. The OAM mode generation distance and confinement loss, as a function of d 2 at 1.55 μm

Fig. 6. The effective refractive index of HE4,1 odd and even modes, as well as generated OAM mode distance, as a function of wavelength

Fig. 7. Phase of generated OAM beam
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Table 1. Fiber structure parameters and generation distance of each order OAM mode

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