Propagation of reflective three-output with dual-layered grating in second-order Littrow configuration

被引：0
|
作者：
Lin, Zefan [1 ]
Wang, Bo [1 ]
Huang, Zhisen [1 ]
Zhu, Wenhua [1 ]
Zhou, Yongchun [1 ]
Li, Lichang [1 ]
Li, Zhipeng [1 ]
Liang, Guoyu [1 ]
Hong, Jiaman [1 ]
机构：
[1] Guangdong Univ Technol, Sch Phys & Optoelect Engn, Guangzhou 510006, Peoples R China
来源：
JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS | 2023年 / 25卷 / 1-2期
关键词：
Three -output propagation; Dual -layered grating; High efficiency; GENERATION;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel type of three-output dual-layered reflective grating is proposed in this paper. Through rigorous coupled-wave analysis, the appropriate thickness of two dielectric layers in grating region can be calculated. According to the optimization results, when the incident light with wavelength 1550 nm is incident at the second Bragg angle, the grating can diffract the incident light energy to the three orders, and the efficiency is close to 33%. Compared with the reported three-output grating under the second Bragg angle incidence, the dual-layered grating has higher diffraction efficiency and better incident angle bandwidth for TE-polarized light.
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页码：24 / 29
页数：6
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