摘要
Separating lights into different, paths according to the polarization states while keeping their respective path's polarizations with high purification is keen for polarization multiplex in optical communications. Metallic nanowire gratings with multi-slits in a period are proposed to achieve polarized beam splitters (PBSs) in reflection and diffraction. The setting of multi-slits largely reduces the reflection of photons with a transverse magnetific field via the plasmonic waveguiding effect, which leads to highly polarized output lights with extinction ratio larger than 20 dB in each channel. The proposed reflection/diffraction PBSs enrich the approaches to control the polarization states with the advantages of wide incident angles and flexible beam splitting angles.
Separating lights into different paths according to the polarization states while keeping their respective path’s polarizations with high purification is keen for polarization multiplex in optical communications. Metallic nanowire gratings with multi-slits in a period are proposed to achieve polarized beam splitters(PBSs) in reflection and diffraction. The setting of multi-slits largely reduces the reflection of photons with a transverse magnetific field via the plasmonic waveguiding effect, which leads to highly polarized output lights with extinction ratio larger than 20 dB in each channel. The proposed reflection/diffraction PBSs enrich the approaches to control the polarization states with the advantages of wide incident angles and flexible beam splitting angles.
作者
Haoyu Wang
Jun Zheng
Yifei Fu
Chengliang Wang
Xinran Huang
Zhicheng Ye
Liejia Qian
王豪宇;郑君;傅翼斐;王成亮;黄欣然;叶志成;钱列加(Key Laboratory for Laser Plasmas (MoE) and School of Physics and Astronomy,Shanghai Jiao Tong University, Shanghai 200240,China;Collaborative Innovation Center of IF SA (CICIFSA),Shanghai Jiao Tong University,Shanghai 200240,China;Department of Electronic Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)
基金
supported by the National Natural Science Foundation of China(Nos.61775136 and 11721091)
