Design of a single-polarization single-mode photonic crystal fiber double-core coupler
Design of a single-polarization single-mode photonic crystal fiber double-core coupler
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DOI：
10.1016/j.ijleo.2007.12.002
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发表时间：
2009-06
期刊：
影响因子：
3.1
通讯作者：
Jianfeng Li;K. Duan;Yishan Wang;Xiangjie Cao;Yongkang Guo;X. Lin
中科院分区：
文献类型：
--
作者：
Jianfeng Li;K. Duan;Yishan Wang;Xiangjie Cao;Yongkang Guo;X. Lin
介绍了一种简单的双芯单偏振单模光子晶体光纤耦合器。采用全矢量有限元法（FEM）分析了两个正交偏振的偶模和奇模的模式干涉现象以及两个纤芯内的功率传输。同时，数值分析了不同结构参数下SPSM的耦合波长范围及其对应的耦合长度。数值计算结果表明，SPSM耦合可以在很宽的波长范围内实现，耦合长度可以达到毫米量级。此外，通过设计合适的耦合器微结构参数，可以优化SPSM耦合波长范围和耦合长度。
A simple single-polarization single-mode (SPSM) photonic crystal fiber (PCF) coupler with two cores is introduced. The full-vector finite-element method (FEM) is applied to analyze the modal interference phenomenon of the even and odd modes of two orthogonal polarizations and the power propagation within the two cores. Meanwhile, the SPSM coupling wavelength range and its corresponding coupling length for different structure parameters are numerically analyzed. The numerical results show that SPSM coupling can be realized with a broad range of wavelength, and the coupling length can be of millimeter magnitude. Moreover, the SPSM coupling wavelength range and the coupling length can be optimized by designing proper mirco-structure parameters of the coupler.