激光与光电子学进展, 2013, 50 (6): 062304, 网络出版: 2013-05-22   

一种高效光子晶体偏振光分束器

A High Efficiency Photonic Crystal Polarization Beam Splitter
周飞 1,2,*费宏明 1,2陈智辉 1,2刘欣 1,2杨毅彪 1,2
作者单位
1 太原理工大学新型传感器与智能控制教育部重点实验室, 山西 太原 030024
2 太原理工大学物理与光电工程学院, 山西 太原 030024
摘要
基于不同结构的光子晶体具有不同禁带范围的特性,设计了一种光子晶体偏振光分束器,通过平面波展开法与时域有限差分法进行数值计算与模拟分析。结果表明,该分束器能够实现电磁波的高效分束:波长为1.5~1.58 μm范围内电磁波入射时,TE模和TM模的透射率均高于92%;尤其是波长为1.55 μm的电磁波入射时,TE模透射率可达95.5%,TM模透射率可达99%。同时,其尺寸仅为10 μm×11.5 μm。这些特性使其具有良好的应用前景。
Abstract
The design of a polarization beam splitter(PBS) is presented according to different band gaps with different photonic crystals. The splitting properties of the PBS are numerically simulated and analyzed by using the finite-difference time-domain method and the plane wave expansion method. It is shown that a highly efficient splitting for TE mode and TM mode can be achieved. The transmission probability is above 92% for both TE mode and TM mode while the incident wave is Gaussian and the wavelength range is 1.5~1.58 μm. Especially the transmission probability can reach 95.5% for TE mode and 99% for TM mode the 1.55 μm Gaussian incidence. Meanwhile, its size is only 10 μm×11.5 μm. The PBS makes a promising candidate in the future integrated optical circuit.
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周飞, 费宏明, 陈智辉, 刘欣, 杨毅彪. 一种高效光子晶体偏振光分束器[J]. 激光与光电子学进展, 2013, 50(6): 062304. Zhou Fei, Fei Hongming, Chen Zhihui, Liu Xin, Yang Yibiao. A High Efficiency Photonic Crystal Polarization Beam Splitter[J]. Laser & Optoelectronics Progress, 2013, 50(6): 062304.

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