[1] Meta-waveguides are the result of combining the fields of metamaterials and metasurfaces into integrated optics.
[2][3] The design of the subwavelength architecture allows exotic waveguiding phenomena to be explored.
[1][5] Meta-waveguides can provide new degrees of design freedom to the available structural library for optical waveguides in integrated photonics.
[1][3] Applications of meta-waveguides include beam/polarization splitting,[3] integrated waveguide mode converters,[4] versatile waveguide couplers,[6] lab-on-fiber sensing,[7] nano-optic endoscope imaging,[8] on-chip wavefront shaping,[9] structured-light generations,[10] and optical neural networks.
[11][12] The meta-structures can also be further integrated with van der Waals materials to add more functionalities and reconfigurability.