Before revision: A meta-waveguide refer to a kind of physical structures that guide electromagnetic waves with engineered functional subwavelength structures.. Meta-waveguides can be regarded as the interdisciplinary research field of metamaterials or metasurfaces into integrated optics.
After revision: In photonics, a meta-waveguide is a physical structures that guides electromagnetic waves with engineered functional subwavelength structures.. Meta-waveguides are the result of combining the fields of metamaterials and metasurfaces into integrated optics.