Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1538309 | Optics Communications | 2010 | 5 Pages |
Abstract
Large lateral beam shift in prism–waveguide coupling system is theoretically analyzed from the viewpoint of interference between multiple reflected beam constituents. It is shown that the reflected beam is a result of interference between two beams: the beam directly reflected from the prism and the total leaky beam coming from guided mode. The thickness of coupling layer determines the amplitude of the total leaky beam, and further determines the sign (positive or negative) of the reflected beam shift. Because of interference between two beams, intrinsic damping itself plays an important role in deciding the distortion of the reflected beam.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Xiangmin Liu, Qingfen Yang, Zhi Qiao, Tongkai Li, Pengfei Zhu, Zhuangqi Cao,