US 12,451,972 B2
Methods and apparatuses for wavelength locking for optical wavelength division multiplexed micro-ring modulators
Adebabay M. Bekele, San Jose, CA (US); Mayank Raj, San Jose, CA (US); Chuan Xie, Fremont, CA (US); Sandeep Kumar, Cork (IE); Zhaowen Wang, Sunnyvale, CA (US); Sukruth Pattanagiri Giriyappa, Bangalore (IN); Parag Upadhyaya, Los Gatos, CA (US); and Yohan Frans, Palo Alto, CA (US)
Assigned to XILINX, INC., San Jose, CA (US)
Filed by XILINX, INC., San Jose, CA (US)
Filed on Jun. 5, 2023, as Appl. No. 18/205,748.
Prior Publication US 2024/0405882 A1, Dec. 5, 2024
Int. Cl. H04B 10/04 (2006.01); H04B 10/54 (2013.01)
CPC H04B 10/541 (2013.01) 20 Claims
OG exemplary drawing
 
1. A method of operating an optoelectronic device, comprising:
transmitting a data pattern to an optical modulator device of the optoelectronic device;
identifying, for each heater control value of a plurality of heater control values for a heater thermally coupled with the optical modulator device, an optical modulation amplitude corresponding to the heater control value based at least in part on a corresponding photodiode current value identified while transmitting the data pattern;
determining a maximum optical modulation amplitude for the optical modulator device based at least in part on a plurality of optical modulation amplitudes corresponding to the plurality of heater control values according to the identifying; and
controlling the heater based at least in part on the determined maximum optical modulation amplitude that has been modified according to a scaling value being one of a plurality of scaling values associated with a plurality of optical modulator devices.