期刊
OPTICS COMMUNICATIONS
卷 283, 期 13, 页码 2681-2685出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2010.03.002
关键词
Total reflection; Goos-Hanchen shift; Prism-waveguide coupling system
类别
资金
- National Nature Science Foundation of China [10804076]
- Nature Science Foundation of Hebei Province of China [F2008000450]
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. (C) 2010 Elsevier B.V. All rights reserved.
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