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:
Sep. 09, 2025
Filed:
Jan. 13, 2023
Industry-university Cooperation Foundation Hanyang University Erica Campus, Ansan-Si, KR;
Young Hyun Kim, Ansan-si, KR;
Seong Ui An, Ansan-si, KR;
Abstract
Provided is an optical phase shifter. The optical phase shifter includes: a silicon substrate; a cladding layer disposed on the silicon substrate; an intermediate film disposed on the cladding layer; a KTN (KTaNbO) waveguide disposed on the intermediate film; a protective layer disposed on the intermediate film to cover the KTN waveguide; and first and second electrodes disposed on the intermediate film while being spaced apart from each other with the KTN waveguide interposed between the first and second electrodes, wherein a silicon waveguide is disposed inside the cladding layer while being spaced apart from the KTN waveguide with the intermediate film interposed between the silicon waveguide and the KTN waveguide.