Resonant-grating reflection extended to wide-band, large-aperture beams by waveguide-mode coalescence

被引:3
作者
Jourlin, Y. [1 ]
Tonchev, S. [1 ]
Tishchenko, A. V. [1 ]
Lacour, F. [2 ]
Parriaux, O. [1 ]
机构
[1] Univ Lyon, Lab Hubert Curien, CNRS, UMR 5516, F-42000 St Etienne, France
[2] Eurofarad Dpt CSA, F-77600 Chanteloup En Brie, France
关键词
FILTERS; DESIGN;
D O I
10.1364/OE.20.029155
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The resonant reflection of a free-space beam from a slab waveguide grating is rendered high bandwidth and angularly robust by using a bimodal high index waveguide. A deep double-sided corrugation gives rise to the coalescence of the resonant reflection peaks resulting in a top-hat reflection spectrum. A low-cost waveguide technology based on solar cell amorphous silicon is demonstrated in the near infrared in a polarizer application. (C) 2012 Optical Society of America
引用
收藏
页码:29155 / 29163
页数:9
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