Metamaterial interface waveguides can confine and guide electromagnetic (EM) waves, which has attractive potential in integrated photonics physics and wireless devices, from radio frequencies to optical bands. The energy flow in waveguides can be fully controlled by sorting the near-field light waves according to their handedness (chirality), which determines the direction of energy transmission. Chirality sorting is an important process to develop in the field of chiral photonics. In the future, chiral-sorting metadevices may be fully digitized and programmable, so that reconfigurable unidirectional transmission routes and scattering performance of the artificial structures can be controlled simultaneously.
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Source: Phys.org