Patent ID: 8965162
Filing Date: 2015-02-24
Classification: G02B

Abstract:
1. A waveguide configuration comprising: an optical core having an optical core radial thickness and a core index of refraction, and, at least one optical cladding adjacent the core, the at least one optical cladding having a cladding index of refraction, wherein the core and the cladding together define an optical mode; and an acoustic core defined by a doped outer region of the optical core and having the same centerline and a smaller radius than optical core and having a core acoustic velocity, the doped outer region of the optical core having an acoustic velocity less than the core acoustic velocity and 20 m/s or less higher than the acoustic velocity of the at least one optical cladding; wherein the waveguide is an optical waveguide and an acoustic anti-guiding waveguide wherein an acoustic waveguide loss coefficient takes on a value greater than one times a material damping coefficient thereby reducing the time of interaction between an optical and an acoustic wave in the waveguide.