Patent ID: 9018642
Filing Date: 2015-04-28
Classification: G02B,G02F,H01Q

Abstract:
1. An optical device, comprising a metamaterial and a circuit adapted to apply a bias voltage to the metamaterial, wherein: the metamaterial comprises a doped semiconductor substrate and an array of resonators overlying the substrate; the array of resonators comprises a two-dimensional repeating pattern of electrically interconnected resonator units; each said unit is dimensioned to have at least one resonant frequency responsive to stimulation by at least one frequency of electromagnetic radiation in a range of operating frequencies at least 15 THz; the bias circuit is adapted to apply the bias voltage between the substrate and the array of resonators; the substrate has a semiconductor plasma resonance lying below the operating frequency range; and the array of resonators is electromagnetically coupled at least at one said resonant frequency to the substrate; and each resonator unit is conformed as two or more electromagnetically coupled resonator arms having different resonant frequencies.