Metamaterials enable specific light propagation modes using a multimode waveguide. (IMAGE)

SPIE--International Society for Optics and Photonics

Metamaterials enable specific light propagation modes using a multimode waveguide.

Caption

Metamaterials enable specific light propagation modes using a multimode waveguide. (Left) Conceptual illustration of a 1D gradient-index metamaterial (GIM) structure with refractive index continuously varying along the direction of light propagation. (Right) GIM-based coupler for a 16-channel MDM system; (bottom) SEM images of coupling regions.

Credit

He et al., doi 10.1117/1.AP.5.5.056008.

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