US Patent Issued to CIENA on Nov. 11 for "High speed high swing driver for direct drive photonic modulators" (Canadian Inventors)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,470,213, issued on Nov. 11, was assigned to CIENA Corp. (Hanover, Md.).

"High speed high swing driver for direct drive photonic modulators" was invented by Faisal Ahmed Musa (Stittsville, Canada), Ahmed Mustafa (Kanata, Canada), Naim Ben Hamida (Ottawa) and Bruce Beggs (Ottawa).

According to the abstract* released by the U.S. Patent & Trademark Office: "An integrated circuit device includes a digital-to-analog converter with multiple bit slices, each bit slice having a differential pair of driver transistors. A driver circuit includes the differential pairs of driver transistors, multiple series cascode transistors, and current bleed paths to modify drain-to-source currents in the va...