Qingguo Song, Chengjun Huang, Zhijun Yan, Qizhen Sun, Deming Liu, Lin Zhang. All-Fiber Polarization-Dependent Device Based on 45° Radiated Tilted Fiber Grating[J]. Acta Optica Sinica, 2020, 40(23): 2306003
- Acta Optica Sinica
- Vol. 40, Issue 23, 2306003 (2020)
Fig. 1. Characteristic diagram of 45° RTFG
Fig. 2. Simulation of 45° RTFG radiation mode angular distribution and axial distribution
Fig. 3. Parameter simulation of 45° RTFG. (a) Transmission spectrum simulation of light with S and P polarization states; (b) PER simulation
Fig. 4. Preparation of 45° RTFG. (a) Grating preparation system; (b) microstructure of 45° RTFG
Fig. 5. Radiation mode distribution experiment of 45° RTFG. (a) Experimental setup; (b) experimental and simulation results of radiation mode distribution along azimuthal direction; (c) experimental and simulation results of radiation mode distribution along axial direction
Fig. 6. Diffraction characteristics of 45° RTFG. (a) Experiment setup; (b) diffraction angle versus wavelength
Fig. 7. Polarization characteristics of 45° RTFG. (a) Transmission spectra; (b) polarization distribution; (c) PER spectrum profile; (d) relationship between PER and grating length
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