title: Tunable highly birefringent photonic bandgap fibers.
abstract: A novel tunable highly birefringent photonic bandgap fiber (PBGF) is designed theoretically by filling its air holes with high-index material. The transmission band can be continuously tuned by changing the refractive index of the filling material. Accordingly, the tunable modal birefringence and polarization mode dispersion of the PBGFs are investigated by adjusting the refractive index of the filling material. Furthermore, we have also analyzed the effect of surface modes in the photonic bandgap on the characteristics of the tunable PBGFs. The simulation results show the feasibility of constructing birefringence-tunable photonic crystal fibers and related fiber devices in practical applications.
authors.affiliation: Institute of Modern Optics, Nankai University, Tianjin, China. chunshuzhang@mail.nankai.edu.cn
authors.forename: Chunshu
authors.initials: C
authors.lastname: Zhang
authors.forename: Guiyun
authors.initials: G
authors.lastname: Kai
authors.forename: Zhi
authors.initials: Z
authors.lastname: Wang
authors.forename: Yange
authors.initials: Y
authors.lastname: Liu
authors.forename: Tingting
authors.initials: T
authors.lastname: Sun
authors.forename: Shuzhong
authors.initials: S
authors.lastname: Yuan
authors.forename: Xiaoyi
authors.initials: X
authors.lastname: Dong