NANOPHOTONIC RADIATOR HAVING MODULABLE GRID STRUCTURE FOR APPLICATION TO PHOTONIC PHASED-ARRAY ANTENNA

Abstract

A light radiator element constituting an optical phase alignment antenna, comprising: an optical waveguide including a waveguide core and a waveguide clad using a semiconductor material; and a grating periodically formed at an upper portion or a lower portion of the optical waveguide, the light radiator element that inputs an input light wave in one direction of the optical waveguide and the grating and radiates an output light wave to a free space using scattering from the grating, and changes an effective refractive index of the grating by voltage application or current injection around the light radiator element in order to adjust a radiation angle of the output light wave radiated to the free space.