偏振器
光学
绝缘体上的硅
消光比
材料科学
硅
时域有限差分法
折射率
波导管
光电子学
物理
双折射
波长
作者
Muhammad Alam,J. Stewart Aitchsion,Mohammad Mojahedi
出处
期刊:Applied optics
[The Optical Society]
日期:2011-05-16
卷期号:50 (15): 2294-2294
被引量:77
摘要
Hybrid waveguides consisting of a metal plane separated from a high-index medium by a low-index spacer have recently attracted a lot of interest. TM and TE modes are guided in two different layers in these structures and their properties can be controlled in different manners by changing the waveguide dimensions and material properties. We examine the effects of different parameters on the characteristics of the two modes in such structures. We show that by properly choosing the dimensions, it is possible to cut off the TE mode while the TM mode can still be guided in a well-confined manner. Using this property of the hybrid guide, we propose a TM-pass polarizer. The proposed device is very compact and compatible with the silicon-on-insulator platform. Finite-difference time-domain simulation indicates that such a polarizer can provide a high extinction of the TE mode for a reasonable insertion loss of the TM mode.
科研通智能强力驱动
Strongly Powered by AbleSci AI