US 12,222,589 B2
Thermal stabilization circuit for an optical ring resonator
Michal Rakowski, Ballston Spa, NY (US); Vaibhav A. Ruparelia, Bangalore (IN); Riddhi Nandi, Bangalore (IN); Prateek K. Sharma, Uttar Pradesh (IN); Avijit Chatterjee, West Bengal (IN); Vasudeva Reddy KuppiReddy, Bangalore (IN); and Indranil Som, West Bengal (IN)
Assigned to GlobalFoundries U.S. Inc., Malta, NY (US)
Filed by GlobalFoundries U.S. Inc., Malta, NY (US)
Filed on Apr. 26, 2022, as Appl. No. 17/729,031.
Prior Publication US 2023/0341627 A1, Oct. 26, 2023
Int. Cl. G02B 6/293 (2006.01); G02B 6/12 (2006.01); G02F 1/01 (2006.01); H01S 3/083 (2006.01)
CPC G02F 1/0123 (2013.01) [G02B 6/12026 (2013.01); G02B 6/2934 (2013.01); G02F 1/0147 (2013.01); G02F 2201/58 (2013.01); G02F 2203/15 (2013.01); H01S 3/083 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A structure comprising:
a heater adjacent to an optical ring resonator; and
an analog feedback circuit configured to detect an optical signal at a drop port of the optical ring resonator, to generate an analog voltage signal using the optical signal, to generate a reference voltage signal using the analog voltage signal, to compare the reference voltage signal to the analog voltage signal to generate a voltage control signal, and to control power provided to a heater based on the voltage control signal.