US 11,695,254 B2
Quantum dot slab-coupled optical waveguide emitters
Dominic F. Siriani, Lansdale, PA (US); Jock T. Bovington, Koenigstein Im Taunus (DE); and Matthew J. Traverso, Saratoga, CA (US)
Assigned to Cisco Technology, Inc., San Jose, CA (US)
Filed by Cisco Technology, Inc., San Jose, CA (US)
Filed on Nov. 9, 2022, as Appl. No. 18/53,993.
Application 18/053,993 is a continuation of application No. 16/242,984, filed on Jan. 8, 2019, granted, now 11,539,189.
Prior Publication US 2023/0096081 A1, Mar. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01S 5/22 (2006.01); H01S 5/02 (2006.01); H01S 5/028 (2006.01)
CPC H01S 5/2206 (2013.01) [H01S 5/021 (2013.01); H01S 5/028 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical apparatus comprising:
a semiconductor substrate comprising silicon; and
a slab-coupled optical waveguide (SCOW) emitter disposed on the semiconductor substrate, the SCOW emitter comprising an optical waveguide, the optical waveguide comprising:
a first region doped with a first conductivity type;
a second region doped with a different, second conductivity type; and
an optically active region disposed between the first region and the second region, the optically active region comprising a plurality of quantum dots.