The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 20, 2025
Filed:
Jun. 29, 2020
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Yu Kurata, Musashino, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
A photonic integrated optical device can implement hybrid integration of an optical functional element simply and easily using an optical circuit of a PLC as a platform and allows high accuracy butt-joining of optical waveguides. For that, on the side of an optical circuit on top of a substrate of the PLC, the device uses a butt-joint holding substrate that transmits light in the wavelength region ranging from the UV light band to the visible light band. A UV-cure adhesive is filled into a gap between an optical circuit of the PD and an optical circuit of the PLC and a gap between an end face of a substrate of the PD and an end face of the substrate. This allows a joint to be formed by the UV-cure adhesive filled into the gap between the butt-joining end faces and cured by UV light passing through the substrate.