Abstract
We propose a novel optical polarizer based on an asymmetric dual-core photonic crystal fiber (PCF) with triangular lattice air-holes. The fiber is designed as that the effective indices of modes in the two cores are matched at one polarized state but mismatched at another polarized state. As a result, one of the polarization states is coupled to the other core and transferred into a high-order mode. The transmission properties of the polarizer are investigated by the semi-vectorial beam propagation method (SV-BPM). Numerical results demonstrate that a device length of 11.3 mm shows extinction ratio as low as −20 dB with bandwidth as great as 80 nm ranging from 1.51 m to 1.59 m.
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This work has been supported by the National Natural Science Foundation of China (No.10904051), the China Postdoctoral Science Foundation (Nos.20080441070 and 200902505), and the Jiangsu Planned Projects for Postdoctoral Research Funds (No.0802018B).
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Sun, B., Chen, My., Yu, Rj. et al. Design of a fiber polarizer based on an asymmetric dual-core photonic crystal fiber. Optoelectron. Lett. 7, 253–255 (2011). https://doi.org/10.1007/s11801-011-0077-0
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DOI: https://doi.org/10.1007/s11801-011-0077-0