US 11,888,290 B2
Supermode filtering waveguide emitters
Dominic F. Siriani, Lansdale, PA (US); and Kenneth J. Thomson, San Francisco, 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. 18/054,030.
Application 18/054,030 is a continuation of application No. 16/294,634, filed on Mar. 6, 2019, granted, now 11,539,186.
Prior Publication US 2023/0095386 A1, Mar. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01S 5/00 (2006.01); H01S 5/10 (2021.01); H01S 5/026 (2006.01); H01S 5/22 (2006.01); H01S 5/34 (2006.01); H01S 5/065 (2006.01); H01S 5/50 (2006.01)
CPC H01S 5/1028 (2013.01) [H01S 5/026 (2013.01); H01S 5/0265 (2013.01); H01S 5/0651 (2013.01); H01S 5/0654 (2013.01); H01S 5/22 (2013.01); H01S 5/34 (2013.01); H01S 5/341 (2013.01); H01S 5/3412 (2013.01); H01S 5/50 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An optical apparatus comprising:
a semiconductor substrate; and
a supermode filtering waveguide (SFW) emitter disposed on the semiconductor substrate and formed as a first portion extending from a second portion, the SFW emitter comprising:
a first optical waveguide disposed in the second portion;
a spacer layer;
a second optical waveguide disposed in the first portion and spaced apart from the first optical waveguide by the spacer layer, wherein the second optical waveguide is evanescently coupled with the first optical waveguide and configured in conjunction with the first optical waveguide to selectively propagate only a first mode of a plurality of optical modes; and
an optically active region disposed in one of the first optical waveguide and the second optical waveguide.