Patent ID: 8842948
Filing Date: 2014-09-23
Classification: B82Y,G02B,G02F,Y10T

Abstract:
1. A dynamic switch for controlling propagation of a terahertz signal comprising: (a) a double-corrugated metallic waveguide having a number of uniform sized periodic grooves located on two opposite surfaces of the waveguide where the height, the width, and the periodicity of grooves as well as the distance between the opposite grooves are of sub-wavelength dimensions and the waveguide includes isotropic dielectric material inside its metallic outer surfaces; (b) a cavity that is a small intervening space between a first double-corrugated metallic waveguide segment and a second double-corrugated metallic waveguide segment where the said space contains a fewer number of double-sided grooves having height shorter than the height of grooves inside the double-corrugated metallic waveguide segment, and the cavity includes a different dielectric material from the isotropic dielectric inside of the double-corrugated metallic waveguide; and (c) the double-corrugated metallic waveguides on the two ends that provide the input of said dynamic switch and the output of said dynamic switch.