ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,699,331, issued on Aug. 4.
"Self-aligned ridge waveguide laser structure, method for fabrication, and method for use with interposer-based pics" was invented by Suresh Venkatesan (Los Gatos, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A structure and method for providing alignment aids that are co-fabricated with the optical emission output from a laser pedestal are described. In embodiments, the alignment aids are formed using processes and masking layers that produce a ridge waveguide laser structure. The use of same masking processes for the laser and the alignment aids provides lithographic level precision in the positioning of the alignmen...