US Patent Issued to FUJITSU OPTICAL COMPONENTS on Dec. 2 for "Optical device, substrate type optical waveguide element, optical communication apparatus, and inter-waveguide transition method" (Japanese Inventor)

ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,487,400, issued on Dec. 2, was assigned to FUJITSU OPTICAL COMPONENTS Ltd. (Kawasaki, Japan).

"Optical device, substrate type optical waveguide element, optical communication apparatus, and inter-waveguide transition method" was invented by Akira Oka (Kawasaki, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical device includes a transition unit in which a first waveguide and a second waveguide are disposed in an overlapped manner such that a magnitude relationship of an effective refractive index between the vertical modes propagating the first waveguide and the vertical modes propagating the second waveguide is inverted at the positions of ...