3-D-Printed Pentahedral Polarization-Division Transmissive Metadevice With Versatile Wavefronts

A novel pentahedral polarization-multiplexed metadevice concept is proposed via metasurfaces (MSs), providing an alternative avenue toward the capacity and versatility limit of integrated functions. First, a multi-layer anisotropic transmissive meta-atom is proposed for phase control of differently polarized waves. Next, five individual sub-MSs are designed and assembled using a 3D-printed pentahedral frame. Finally, a proof-of-concept pentahedral device is experimentally characterized, demonstrating diverse functionalities including the generation of highly directive beams, tri-beam radiation, dual-vortex beams, and dual-beam in orthogonal linearly polarized (LP) and decoupled co-/cross-circularly polarized (CP) channels. Measured and simulated results coincide well and illustrate the effectiveness of the space-polarization multiplexing concept in versatile wavefront control over a pentahedral platform.