Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5025104 | Optik - International Journal for Light and Electron Optics | 2017 | 9 Pages |
Abstract
We design a crystal photonic fiber (PCF) polarization filter with asymmetric structure and two large air-holes coated with gold film. The influence of the thickness of metal layers and the diameter of large air-holes on the filtering characteristic is investigated using finite element method (FEM). In calculations, the sixth and the third order surface plasma modes (SPM) are presented. The resonance positions are well separated by the asymmetry of the structure in vertical direction. The loss of unwanted polarization is 829 and 1267 times than that of wanted polarization at 1.48 and 1.55 μm respectively. When the fiber length is 3 mm, the crosstalk is 1055 dB and 927 dB for 1.48 and 1.55 μm. The bandwidth with crosstalk better than 20 dB can reach to 1000 nm, covering almost all communication band. What's more, gold excitation of SPR and silver excitation of SPR are compared and studied.
Related Topics
Physical Sciences and Engineering
Engineering
Engineering (General)
Authors
Junjun Wu, Shuguang Li, Xili Jing, Chao Dou, Qiang Liu,