Design of a high-efficiency grating coupler with flat-top-like output

被引:0
|
作者
Wang, C. [1 ]
Zhang, S. [1 ]
机构
[1] China Elect Power Res Inst Co Ltd, Inst Artificial Intelligence, Beijing, Peoples R China
关键词
STRUCTURED ILLUMINATION MICROSCOPY; POLARIZATION BEAM SPLITTER; WAVE-GUIDES;
D O I
10.1364/JOT.88.000661
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
What we believe to be a novel high-efficiency grating coupler that can couple out a flat-top-like beam profile is proposed. Theory analyses and simulation results are shown in the design with optimized parameters. The power-up from the optimized grating coupler is over 83.9% (-0.76 dB) at the center wavelength of 1550 nm with the 3 dB bandwidth of about 140 nm. The flat-top area of the output light at a height of 1 mu m above the waveguide surface is about 14 x 14 mu m(2), which is applicable in the illumination field for many optical sensors. (C) 2021 Optica Publishing Group
引用
收藏
页码:661 / 665
页数:5
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