US Patent Issued to Seagate Technology on Sept. 29 for "Waveguide multilayer core structure for use in heat assisted magnetic recording" (Minnesota Inventor)

ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,749,503, issued on Sept. 29, was assigned to Seagate Technology LLC (Fremont, Calif.).

"Waveguide multilayer core structure for use in heat assisted magnetic recording" was invented by Chubing Peng (Eden Prairie, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Described are recording heads for heat assisted magnetic recording that include a light delivery waveguide that delivers light for excitation of a near-field transducer, where the waveguide has a multilayer core. The multilayer core includes a top outer layer nearest to the near-field transducer that has a lower refractive index than an inner layer of multilayer core. The described waveguide...