Photonic crystal cavity with one-way rotating state and its coupling with photonic crystal waveguide.
- Resource Type
- Article
- Authors
- Wang, Zhuoyuan; Shen, Linfang; Zhang, Xianmin; Wang, Yigang; Yu, Zaihe; Zheng, Xiaodong
- Source
- Journal of Applied Physics. Aug2011, Vol. 110 Issue 4, p043106. 4p.
- Subject
- *PHOTONICS research
*MAGNETOOPTICS
*WAVEGUIDES
*CRYSTALS
*SEMICONDUCTOR research
- Language
- ISSN
- 0021-8979
A photonic crystal (PhC) cavity formed by a closed interface between a dielectric PhC and a magnetooptical (MO) material PhC is proposed and analyzed theoretically. It is shown that such a cavity can support one-way rotating modes and thus the modal fields at different frequencies have a similar pattern. The loss effect of MO material is taken into consideration for the solution of quality-factors for the cavity. The coupling between a cavity with one-way state and a PhC waveguide is also studied through numerical simulations. Simulation results show that cavity mode only interacts with the waveguide mode propagating in a particular direction. This work paves the way to control waveguide-cavity interaction. [ABSTRACT FROM AUTHOR]