Waveguide lens including planar waveguide and media grating

Abstract

A waveguide lens includes a substrate, a pair of electrodes, a planar waveguide, and a grating. The planar waveguide is formed on the substrate and is coupled with a laser light source, which emits a laser beam having a divergent angle into the planar waveguide. The grating is formed on the planar waveguide. The laser light source is attached to a portion of the planar waveguide corresponding to the planar waveguide; the grating and the planar waveguide constitute a ridge-type waveguide lens to converge a laser beam into an optical element. The pair of electrodes is arranged at two opposite sides of the planar waveguide and is configured to change an effective refractive index of the planar waveguide, utilizing an electro-optical effect, when a modulating electric field is applied.

Dependencies are inferred from the claim text.