Ultracompact and broadband mid-infrared polarization beam splitter based on an asymmetric directional coupler consisting of GaAs–CaF<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" id="d1e1087" altimg="si3.svg"><mml:msub><mml:mrow/><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:math> hybrid plasmonic waveguide and GaAs nanowire

Fang Wang, Yake Chen, Chuanqiang Li, Tao Ma, Xu Wang, Kun Yu, Lei Li