US Patent Issued to Lumentum Operations on July 21 for "Stacked gratings for optical emitters" (California Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,689,183, issued on July 21, was assigned to Lumentum Operations LLC (San Jose, Calif.).

"Stacked gratings for optical emitters" was invented by Yeyu Zhu (San Jose, Calif.) and Chien-Yao Lu (San Jose, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Some implementations described herein may provide an optical device. The optical device may include an optical emitter and an optical element aligned to the optical emitter. The optical element may include an oxidation aperture, one or more distributed Bragg reflectors (DBRs) disposed on the oxidation aperture, and a stacked periodic grating structure disposed on the one or more DBRs. The stacked periodi...