ALEXANDRIA, Va., June 5 -- United States Patent no. 12,278,464, issued on April 15, was assigned to ABOCOM SYSTEMS INC. (Miaoli County, Taiwan).
"Edge emitting laser device" was invented by Cheng-Yi Ou (Miaoli County, Taiwan), Chih-Yuan Lin (Miaoli County, Taiwan) and Cheng-Hsiao Chi (Miaoli County, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An edge emitting laser (EEL) device includes a substrate, an n-type buffer layer, a first n-type cladding layer, a grating layer, a spacer layer, a lower confinement unit, an active layer, an upper confinement unit, a p-type cladding layer, a tunnel junction layer and a second n-type cladding layer sequentially arranged from bottom to top. The tunnel junction ...