Tao Hong, Mi Yuean, Ren Wenhua, Jian Wei, Ren Guobin. Vector Mode Conversion Based on Tilted Long-Period Fiber Grating Written in Ring Fiber[J]. Chinese Journal of Lasers, 2020, 47(6): 606002
- Chinese Journal of Lasers
- Vol. 47, Issue 6, 606002 (2020)
Fig. 1. TLPFG based on ring fiber. (a) Refractive index distribution of fiber cross section; (b) schematic of grating longitudinal section
Fig. 2. Effective refractive index and phase matching curves
Fig. 3. Transmission spectra of vector modes. (a) Transmission spectra; (b) theoretical value of resonant wavelength
Fig. 4. Transmission spectra at different tilt angles modulated by refractive index. (a) p polarization mode; (b) s polarization mode; (c) transmission peak
Fig. 5. Coupling coefficient of vector modes versus tilt angle
Fig. 6. Transmission spectra of different modes under different grating periods. (a) TM01; (b) HE21-p; (c) TE01; (d) HE21-s
Fig. 7. Transmission spectra under different amplitude functions. (a) p polarization mode; (b) s polarization mode; (c) transmission peaks and resonance wavelengths
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