Polarization-independent optical directional coupler based on slot waveguides
Polarization-independent optical directional coupler based on slot waveguides
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DOI：
10.1364/ol.31.000056
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发表时间：
2006-01-01
期刊：
影响因子：
3.6
通讯作者：
Koshiba, M
中科院分区：
文献类型：
--
作者：
Fujisawa, T;Koshiba, M
提出了一种基于缝隙波导的偏振无关光定向耦合器，并采用基于有限元法的严格全矢量分析方法对其进行了分析。适当选择材料和结构参数，使准TE模和准TM模的耦合长度相等。对工作波长和结构参数的公差也进行了讨论。所提出的耦合器可用于高度集成的光路，而无需偏振分集方案。(c)2006年美国光学学会。
A polarization-independent optical directional coupler based on slot waveguides is proposed and analyzed by using rigorous full-vectorial analysis methods based on a finite-element scheme. Properly choosing materials and structural parameters makes the coupling length for quasi-TE modes become equal to that for quasi-TM modes. Tolerances to operating wavelength and structural parameters are also discussed. The proposed coupler can be used for highly integrated optical circuits without polarization diversity schemes. (c) 2006 Optical Society of America.