Patent ID: 9052448
Filing Date: 2015-06-09
Classification: G01N,G02B,H04J

Abstract:
1. A topologically protected device comprising: a two-dimensional array of coupled micro-resonator waveguides having four or more micro-resonators, said two-dimensional array being of any geometry; an input waveguide arranged adjacent to a first micro-resonator of the four or more micro-resonators such that photons in said input waveguide are coupled to only said first micro-resonator and not any other micro-resonators of said four or more micro-resonators; and an output waveguide arranged adjacent to a second micro-resonator of said four or more micro-resonators, different from said first micro-resonator, such that photons are coupled from only said second micro-resonator to said output waveguide and not from any other micro-resonators of said four or more micro-resonators, wherein said two-dimensional array is arranged so as to be operative to provide topological protection against any disorders in said two-dimensional array, the topological protection including providing an alternative pathway for photons traveling along a portion of the perimeter of said two-dimensional array based on photonic edge states thereof such that the traveling photons bypass any disorder in a photon path from said first micro-resonator to said second micro-resonator and such that the traveling photons coupled to the output waveguide from the second micro-resonator are unaffected by any disorder in the two-dimensional array.