US Patent Issued to Huawei Technologies on July 21 for "Composite grating and manufacturing method thereof, diffraction optical waveguide, and electronic device" (Chinese Inventor)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,667, issued on July 21, was assigned to Huawei Technologies Co. Ltd. (Shenzhen, China).

"Composite grating and manufacturing method thereof, diffraction optical waveguide, and electronic device" was invented by Zhuoyong Deng (Dongguan, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A composite grating includes a first relief structure and a second relief structure, the first relief structure includes a plurality of first slits, the second relief structure includes a plurality of second slits, the second relief structure is stacked on a light incident side of the first relief structure, the second slit faces away from the first relief structure...