Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1536136 | Optics Communications | 2012 | 5 Pages |
Abstract
A tunable power splitter is proposed in a two-dimensional photonic crystal with a line defect composed of two rows rods, whose refractive index can be controlled artificially. This device is working at a self-collimation frequency. The finite difference time domain (FDTD) simulations show that the beam splitting ratio is a function of the refractive index of line defect. If the index varies from 3.0 to 3.5, the beam intensity of one output port decreases from 87.2% (normalized by the input beam) to 0 while the intensity of the other output port increases from 8.98% to 100% monotonically. The coupling between the self-collimation mode and the defect mode is used to explain the working mechanism.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Yifeng Shen, Yongchun Wang, Fangfang Wu, Lulu Li, Jie Zhou, Yuan Zhang, Changqing Guo,