ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,535,638, issued on Jan. 27, was assigned to Avago Technologies International Sales Pte. Ltd. (Singapore).

"Multi-step waveguide tapering to couple light from a light source to a ridge waveguide" was invented by Prashanth Bhasker (Macungie, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A waveguide for an optical modulator system includes multiple tapered portions, or regions, designed to couple a CMBH laser light source to a ridge modulator. Using a waveguide with different tapered portions, transmission efficiency between the CMBH light source and the ridge modulator is improved, thus allowing the optical modulator to be used in high-speed applicat...