US Patent Issued to MITSUBISHI ELECTRIC on Dec. 2 for "Grating coupler" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,487,409, issued on Dec. 2, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).

"Grating coupler" was invented by Satoshi Nishikawa (Tokyo) and Masahiro Matsuura (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A grating coupler includes: a first optical waveguide chip; a second optical waveguide chip; and a transparent member. The first optical waveguide chip includes a first substrate, a first waveguide grating, and a first chip end surface. The second optical waveguide chip includes a second waveguide grating and a second chip top surface. Between a first light incident/exit surface of the first optical waveguide chip and a second light incident/ex...