Patent ID: 9158077
Filing Date: 2015-10-13
Classification: G02B,G02F

Abstract:
1. A waveguide lens, comprising: a substrate comprising a top surface and an opposite bottom surface; a planar waveguide formed on the top surface of the substrate, the planar waveguide coupled with a laser light source which emits a laser beam having a divergent angle into the planar waveguide; a media grating formed on the planar waveguide; a pair of first electrodes arranged on the planar waveguide, the pair of first electrodes comprising a first modulating electrode and a first ground electrode; and a pair of second electrodes comprising a second modulating electrode and a second ground electrode; wherein the first modulating electrode and the first ground electrode are arranged at two opposite sides of the media grating; the second modulating electrode overlaying the media grating; the second ground electrode is arranged on the bottom surface and is opposite to the second modulating electrode; the pair of first electrodes configured to change an effective refractive index of the planar waveguide, utilizing an electro-optical effect, when a first modulating electric field is applied, wherein the effective refractive index is corresponding to a transverse electric wave of the laser beam; the pair of second electrodes configured to change an effective refractive index of the planar waveguide, utilizing an electro-optical effect, when a second modulating electric field is applied, wherein the effective refractive index is corresponding to a transverse magnetic wave of the laser beam.