US Patent Issued to ElectroPhotonic-IC on Oct. 14 for "Vertically integrated electro-absorption modulated lasers and methods of fabrication" (Canadian Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,444,903, issued on Oct. 14, was assigned to ElectroPhotonic-IC Inc..

"Vertically integrated electro-absorption modulated lasers and methods of fabrication" was invented by Lawrence E. Tarof (Kanata, Canada), Gudmundur A. Hjartarson (Ottawa) and William A. Hagley (Ottawa).

According to the abstract* released by the U.S. Patent & Trademark Office: "Electro-absorption modulators (EAM) and monolithically integrated electro-absorption modulated lasers (EML) and methods of fabrication are disclosed. Vertically stacked waveguides for a distributed feedback (DFB) laser, an electro-absorption modulator (EAM) and a passive output waveguide are vertically integrated, and the DFB laser, EAM and ...