SPATIAL GAP SOLITONS IN PERIODIC NONLINEAR STRUCTURES

被引：33
|
作者：
NABIEV, RF [1 ]
YEH, P [1 ]
BOTEZ, D [1 ]
机构：
[1] TRW CO INC,SPACE & TECHNOL GRP,REDONDO BEACH,CA 90278
来源：
OPTICS LETTERS | 1993年 / 18卷 / 19期
关键词：
D O I：
10.1364/OL.18.001612
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Self-focusing effects in periodic leaky-wave coupled (antiguided) and evanescent-wave coupled array structures are analyzed for what is to our knowledge the first time. The results obtained can be explained in terms of spatial gap solitons. For infinite-extent arrays of antiguides it is found that (for interelement-spacing values), below the in-phase-mode resonance, self-focusing occurs with increasing light intensity even when the medium is intrinsically self-defocusing (i.e., negative nonlinearity). If the medium has positive nonlinearity the analysis shows that antiguided arrays possess either self-focusing or self-defocusing properties depending on the parameters of the structure, whereas evanescent-wave in-phase coupled arrays always have self-focusing properties.
引用
收藏
页码：1612 / 1614
页数：3
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