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:
Aug. 20, 2024
Filed:
Feb. 02, 2022
Fujitsu Optical Components Limited, Kawasaki, JP;
Masaki Sugiyama, Kawasaki, JP;
FUJITSU OPTICAL COMPONENTS LIMITED, Kawasaki, JP;
Abstract
An optical device includes a substrate W, a RF modulating unit, and a phase adjustment unit. The RF modulating unit is provided on the substrate W and modulates light in accordance with a RF signal. The phase adjustment unitis provided on the substrate W and adjusts the phase of an optical signal modulated by the RF modulating unit. The phase adjustment unitincludes a heaterand a to-be-heated optical waveguide. The to-be-heated optical waveguideis provided between a thin film LN substrateand a buffer layerof the substrate W, and is formed of a material having a thermo-optical effect. The heateris provided at a position opposite the to-be-heated optical waveguide, with the buffer layertherebetween on the substrate W, and heats the to-be-heated optical waveguide