US 12,292,595 B2
Waveguide structure for a photonic integrated circuit
Erik Den Haan, Eindhoven (NL); and Rui Manuel Lemos Alvares Dos Santos, Eindhoven (NL)
Assigned to SMART Photonics Holding B.V., Eindhoven (NL)
Filed by SMART Photonics Holding B.V., Eindhoven (NL)
Filed on May 20, 2022, as Appl. No. 17/750,075.
Application 17/750,075 is a continuation of application No. PCT/EP2020/083443, filed on Nov. 26, 2020.
Claims priority of application No. 1917186 (GB), filed on Nov. 26, 2019.
Prior Publication US 2022/0276439 A1, Sep. 1, 2022
Int. Cl. G02B 6/12 (2006.01); H01S 5/026 (2006.01); H01S 5/042 (2006.01); H01S 5/06 (2006.01); G02B 6/136 (2006.01)
CPC G02B 6/12004 (2013.01) [H01S 5/026 (2013.01); H01S 5/0421 (2013.01); H01S 5/0601 (2013.01); G02B 2006/12097 (2013.01); G02B 2006/12121 (2013.01); G02B 2006/12123 (2013.01); G02B 6/136 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A waveguide structure for a photonic integrated circuit, comprising:
a substrate;
an active region comprising a diode junction, the active region comprising:
a light emission portion to emit light in a first direction and a second direction perpendicular to the first direction; and
a light absorption portion to absorb light emitted from the light emission portion in the second direction;
a first contact corresponding to the light emission portion and configured for electrical connection of the light emission portion to a first biasing circuit;
a second contact corresponding to the light absorption portion and configured for electrical connection of the light absorption portion to a second biasing circuit;
a waveguide for guiding light; and
an absorber structure for absorbing light unguided by the waveguide, the waveguide separated from the absorber structure by a recess in the waveguide structure.