Patent ID: 9097846
Filing Date: 2015-08-04
Classification: G02B,H01S

Abstract:
1. An integrated waveguide coupler comprising: a first waveguide comprising a higher refractive index portion that defines a light transmitting direction, a lower refractive index portion being disposed adjacent to the higher refractive index portion in a direction that is transverse to the light transmitting direction; a second waveguide, comprising a III-V material and disposed near the first waveguide, the first waveguide and the second waveguide facing one another across a gap in the light transmitting direction, such that the first waveguide propagates light in the light transmitting direction, across the gap, toward the second waveguide; and a connecting waveguide disposed in the gap between the first waveguide and the second waveguide, wherein the connecting waveguide comprises a first material, having a first index of refraction disposed substantially adjacent to the lower refractive index portion, and a second material having a second index of refraction higher than the first index of refraction and disposed substantially between the first waveguide and the second waveguides in the light transmitting direction.