Optical devices and methods of controlling propagation directions of light from the optical devices

摘要

An optical device may include a substrate, a metal layer on the substrate, at least one first nano-structure in the layer, and at least one second nano-structure in the layer. The at least one first nano-structure may include a light source. The at least one first and second nano-structures may be spaced apart. A method of controlling a propagation direction of light output from an optical device that includes a metal layer on a substrate may include disposing first and second nano-structures in the layer; disposing at least one light source in the first nano-structure; and controlling the propagation direction of the light output from the at least one light source by changing at least one of a shape of the first nano-structure, a shape of the second nano-structure, a size of the first nano-structure, a size of the second nano-structure, and an interval between the first and second nano-structures.

主权项

1. An optical device, comprising:
a substrate; a metal layer on the substrate; at least one first nano-structure in the metal layer; and at least one second nano-structure in the metal layer; wherein the at least one first nano-structure includes a light source, wherein the at least one second nano-structure is spaced apart from the at least one first nano-structure, wherein each of the at least one first nano-structure and the at least one second nano-structure has a transverse cross-section comprising a relatively longer width and a relatively shorter width, and wherein the at least one second nano-structure is configured to change a propagation direction of light output from at least one source of light in the light source.