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. 24, 2013
Filed:
Aug. 29, 2011
Jungo Kondo, Miyoshi, JP;
Tetsuya Ejiri, Kasugai, JP;
Yuichi Iwata, Nagoya, JP;
Shoichiro Yamaguchi, Ichinomiya, JP;
Taku Nishigaki, Gifu, JP;
Jungo Kondo, Miyoshi, JP;
Tetsuya Ejiri, Kasugai, JP;
Yuichi Iwata, Nagoya, JP;
Shoichiro Yamaguchi, Ichinomiya, JP;
Taku Nishigaki, Gifu, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
An optical waveguide device includes a ferroelectric layer having a thickness of 4 μm-7 μm; a supporting body; and an adhesive layer adhering a bottom face of the ferroelectric layer and supporting body. The ferroelectric layer includes a ridge comprising a channel optical waveguide, first and second protuberances on opposite sides of the ridge, inner grooves between the ridge and protuberances, respectively, and outer grooves outside of the protuberances, respectively. The outer groove is deeper than the inner groove. The ridge portion has a width of 6.6 μm-8.5 μm, a distance of an outer edge of the first protuberance and an outer edge of the second protuberance is 8.6 μm-20 μm, the inner groove has a depth of 2.0 μm-2.9 μm, and the outer groove has a depth of 2.5 μm-3.5 μm.