US 12,189,183 B2
Structure with polarization device with light absorber with at least a hook shape
Yusheng Bian, Ballston Lake, NY (US); Won Suk Lee, Malta, NY (US); and Andreas D. Stricker, Essex Junction, VT (US)
Assigned to GlobalFoundries U.S. Inc., Malta, NY (US)
Filed by GlobalFoundries U.S. Inc., Malta, NY (US)
Filed on Oct. 13, 2022, as Appl. No. 18/046,189.
Prior Publication US 2024/0126013 A1, Apr. 18, 2024
Int. Cl. G02B 6/126 (2006.01); G02B 6/122 (2006.01); G02B 6/27 (2006.01); G02B 6/12 (2006.01); G02B 6/125 (2006.01)
CPC G02B 6/126 (2013.01) [G02B 6/1228 (2013.01); G02B 6/2773 (2013.01); G02B 2006/12126 (2013.01); G02B 6/125 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A structure comprising:
a polarization splitter rotator (PSR), including:
a polarization splitter including:
a first waveguide having first end sections and a first coupling section between the first end sections, the first waveguide including a first core;
a second waveguide having second end sections and a second coupling section between the second end sections and adjacent the first coupling section, the second waveguide including a second core positioned laterally adjacent the first core and a third core stacked vertically with the second core, and wherein a selected one of the second end sections has at least a hook shape; and
a polarization rotator operatively coupled to the other second end section of the second waveguide
wherein the second end section with the at least a hook shape is in an input region of the polarization splitter and the selected one of the second end section that has at least a hook shape acts as a light absorber to reduce undesired optical noise.