ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,546,943, issued on Feb. 10, was assigned to FURUKAWA ELECTRIC Co. LTD. (Tokyo).
"Optical device and optical apparatus" was invented by Masahiro Yoshida (Tokyo) and Yosuke Terada (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical device includes: a coupler that includes a first port, a second port, a third port, a fourth port, and a multimode interference waveguide; a first waveguide that is optically connected to the first port, the first waveguide being configured to guide light that is input to the coupler via the first port; a second waveguide that is optically connected to the second port, the second waveguide being configured to guide...