Superstructure gratings in the tight-binding approximation

被引:33
作者
de Sterke, CM [1 ]
机构
[1] Sch Phys, Sydney, NSW, Australia
[2] Univ Sydney 2006, Australian Photon Cooperat Res Ctr, Eveleigh 1430, Australia
来源
PHYSICAL REVIEW E | 1998年 / 57卷 / 03期
关键词
D O I
10.1103/PhysRevE.57.3502
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
The reflection properties of gratings, such as those found in the core of an optical fiber, previously have been interpreted in terms of evanescent or propagating wave behavior in different parts of the grating. According to this interpretation, nonuniform gratings can thus be understood in a similar way to one-dimensional quantum-well structures. Here we exploit this similarity to develop an analytic theory for deep Bragg superstructure gratings. Using a method similar to the tight-binding method from condensed matter physics, we find approximate analytic expressions for the high-and low-reflectance frequency regions of such gratings.
引用
收藏
页码:3502 / 3509
页数:8
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