红外与毫米波学报, 2014, 33 (2): 154, 网络出版: 2014-05-06
Y型光子晶体偏振光分束器
Polarization beam splitter for Y type photonic crystal
摘要
基于偏振模式不同的光波在二维光子晶体中的传播特性不同,设计出一个支路半径相同的Y型二维光子晶体偏振光分束器.通过时域有限差分法对该分束器进行数值计算与模拟分析.结果表明,该分束器能够实现TE模和TM模平行、高效分束.当波长为1.55 μm的高斯脉冲入射时,TE模透射率可达97%,TM模透射率可达93.5%,且该结构尺寸仅有6.3 μm×6.8 μm.这些特性使其在未来的集成光路中具有很好的应用前景.
Abstract
The design and simulation of polarization beam splitter(PBS) for Y type two-dimensional photonic crystal with the same beam splitting radius are presented. It is based on the different properties of the light waves with different polarization modes propagating in the two-dimensional photonic crystal. The function of the PBS were numerically simulated and analyzed using the finite difference time domain ( FDTD) method. It is shown that parallel splitting with high efficiency for TE and TM modes can be achieved. The transmission probability can reach over 97% for TE mode and over 93.5% for TM mode for a Gaussian pulse light with a wavelength of 1.55 μm. The size of the splitter is only 6.3 μm × 6.8 μm. Owing to these excellent features,the PBS is a promising candidate in the future photonic integrated circuits.
周飞, 费宏明, 杨毅彪, 武建加. Y型光子晶体偏振光分束器[J]. 红外与毫米波学报, 2014, 33(2): 154. ZHOU Fei, FEI Hong-Ming, YANG Yi-Biao, WU Jian-Jia. Polarization beam splitter for Y type photonic crystal[J]. Journal of Infrared and Millimeter Waves, 2014, 33(2): 154.