Terahertz 2-to-1 Data Selector Based on VO2-integrated Cascaded Metasurfaces

A terahertz (THz) directed logic (DL) device for realizing terahertz 2-to-1 data selector operation is proposed. It is based on electrically controlled vanadium dioxide (VO
2
)-integrated cascaded metasurfaces. This terahertz data selector consists of cascaded metasurface embedded with VO
2
films and terahertz beam splitters. Owing to the insulator-to-metal phase transition (IMT) characteristics of VO
2
, the hybrid metasurfaces can work as photon switches to change the transmittance of terahertz waves Finite Element Method (FEM) simulation results numerically verify the proposed data selector operations. This kind of electrically controlled VO
2-
based hybrid metasurfaces data selector potentially promotes the design and implementation of multifunctional electron-photon devices in future THz computing and communication.