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.
© 2005 Optical Society of America
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2420) Fiber optics and optical communications : Fibers, polarization-maintaining
(230.3720) Optical devices : Liquid-crystal devices
Fiber Optics and Optical Communications
Chunshu Zhang, Guiyun Kai, Zhi Wang, Yange Liu, Tingting Sun, Shuzhong Yuan, and Xiaoyi Dong, "Tunable highly birefringent photonic bandgap fibers," Opt. Lett. 30, 2703-2705 (2005)