Patent ID: 9322997
Filing Date: 2016-04-26
CPC Classification: G02B,G11B

Claim Text:
1. An apparatus comprising: a waveguide input coupler including a distal end having a distal end width and a proximal end having a proximal end width; a tapered branch waveguide including a distal end having a distal end width and a proximal end having a proximal end width, the branch waveguide distal end width being greater than the branch waveguide proximal end width; and a waveguide adaptor physically connected to the waveguide input coupler proximal end and to the branch waveguide proximal end; the waveguide input coupler, the branch waveguide, and the waveguide adapter being configured to convert input light having a base transverse waveguide mode to output light having a higher-order waveguide mode.