ALEXANDRIA, Va., July 3 -- United States Patent no. 12,348,003, issued on July 1, was assigned to II-VI DELAWARE INC. (Wilmington, Del.).
"Tunable semiconductor laser device" was invented by Jan-Olof Wesstroem (Stockholm) and Per Granestrand (Tyreso, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A laser device includes front and back DBRs and an interferometer. The front DBR is coupled to a front DBR electrode. The front DBR forms a first tunable multi-peak lasing filter. The back DBR is coupled to a back DBR electrode. The back DBR forms a second tunable multi-peak lasing filter. The interferometer part is coupled between the front DBR and the back DBR. The interferometer part includes first and sec...