Structured illumination of a sub-wavelength hollow-waveguide array

被引：0
|
作者：
Helfert, Stefan F. [1 ]
Jahns, Juergen [1 ]
机构：
[1] Fernuniv, Chair Micro & Nanophoton, Univ Str 27, D-58084 Hagen, Germany
来源：
OPTICAL AND QUANTUM ELECTRONICS | 2019年 / 51卷 / 03期
关键词：
Metallic nanostructures; Dielectric gratings; Structured illumination; Talbot-effect; POLARIZATION CONVERSION;
D O I：
10.1007/s11082-019-1787-y
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A hollow-waveguide array with sub-wavelength dimensions was suggested earlier as a space-variant polarization converter. For optimum light transmission through the array, periodic structured illumination is generated by using a dielectric grating with the same period. In this paper various numerical simulations are performed. The transmission depends on numerous parameters. Particularly, it is shown how the grating can be optimized and how longitudinal and lateral displacements influence the results. For the considered configuration it is found that the transmission can be increased by factors up to 1.46 (TE) and 1.35 (TM) compared to a uniform illumination of the hollow waveguide array.
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页数：15
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