US 11,733,553 B2
Apparatus for reduction of power-dependent optical loss in silicon photonic devices
Sean P. Anderson, Macungie, PA (US); and Hiroyuki Yamazaki, Allentown, PA (US)
Assigned to MACOM Technology Solutions Holdings, Inc., Lowell, MA (US)
Filed by MACOM Technology Solutions Holdings, Inc., Lowell, MA (US)
Filed on Apr. 16, 2021, as Appl. No. 17/233,018.
Prior Publication US 2022/0334417 A1, Oct. 20, 2022
Int. Cl. G02F 1/025 (2006.01); G02B 6/122 (2006.01); G02B 6/12 (2006.01)
CPC G02F 1/025 (2013.01) [G02B 6/122 (2013.01); G02B 2006/12061 (2013.01); G02B 2006/12097 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An optical waveguide for carrying light comprising:
a substrate;
a silicon based optical waveguide supported on the substrate having a first lateral width extent bounded by a first sidewall and a second sidewall and a first height extent bounded by a first bottom face and a first top face, the silicon based optical waveguide being a first material; and
a concentrator supported on the substrate and positioned within the first lateral width extent of the silicon based optical waveguide and outside of the first height extent of the silicon based optical waveguide, the concentrator having a second lateral width extent bounded by a third sidewall and a fourth sidewall and a first height extent bounded by a second bottom face and a second top face, the concentrator being a second material different from the first material, the concentrator concentrates an optical mode of the silicon based optical waveguide to a region generally in the silicon based optical waveguide and having a lateral width in line with the second lateral width extent of the concentrator.