Design of broadband polarization splitter based on partial coupling in square-lattice photonic-crystal fiber.
We propose a design for a novel broadband polarization splitter based on an asymmetric dual-core square-lattice photonic-crystal fiber. The fiber is designed such that index-matched coupling between the two cores can be achieved for one polarization state, while only a part of the energy could be coupled for the other polarization state. Numerical results demonstrate that a device length of 5.9 mm shows extinction ratios as low as -20 dB with bandwidths as great as 101 nm.
Department of Optical Engineering, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China. miniyoung@163.com
Ming-Yang
MY
Chen
Bing
B
Sun
Yong-Kang
YK
Zhang
Xiao-Xia
XX
Fu