ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,548,974, issued on Feb. 10.
"Laser power monitor" was invented by Xue Huang (Maynard, Mass.) and Christopher Doerr (Maynard, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "In part, the disclosure relates to a method of controlling power output of a tunable laser. The method may include changing optical loss during a first time period; recording gain chip voltage V value changes and optical output power P value changes during the first time period; and compensating for changes in gain chip voltage and/or gain chip current, using a feedback control loop, based on the correlation between optical output power P change and gain chip voltage V change, d...