Broadband polarizing beam splitter based on the form birefringence of a subwavelength grating in the quasi-static domain.
We propose a novel broadband polarizing beam splitter with a compact sandwich structure that has a subwavelength grating in the quasi-static domain as the filling. The design is based on effective-medium theory an anisotropic thin-film theory, and the performance is investigated with rigorous coupled-wave theory. The design results show that the structure can provide a high polarization extinction ratio in a broad spectral range.
Yi
Deer
D
State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084, China. yideer99@mails.tsinghua.edu.cn
Yan
Yingbai
Y
Liu
Haitao
H
Lu
Si
S
Jin
Guofan
G