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:
Jul. 24, 2012
Filed:
Aug. 25, 2009
Ken Sakuma, Sakura, JP;
Kensuke Ogawa, Sakura, JP;
Kazuhiro Goi, Sakura, JP;
Yong Tsong Tan, Sakura, JP;
Ning Guan, Sakura, JP;
Mingbin Yu, Singapore, SG;
Hwee Gee Teo, Singapore, SG;
Guo-qiang Lo, Singapore, SG;
Ken Sakuma, Sakura, JP;
Kensuke Ogawa, Sakura, JP;
Kazuhiro Goi, Sakura, JP;
Yong Tsong Tan, Sakura, JP;
Ning Guan, Sakura, JP;
Mingbin Yu, Singapore, SG;
Hwee Gee Teo, Singapore, SG;
Guo-Qiang Lo, Singapore, SG;
Fujikura Ltd., Tokyo, JP;
Agency for Science, Technology and Research, Singapore, SG;
Abstract
A method for manufacturing a planar optical waveguide device including a core of which a top face is provided with a groove section filled with a groove section filler made of a low refractive index material having a refractive index lower than that of the core, the method including; a first high refractive index material layer forming step of forming a high refractive index material layer; a low refractive index material layer forming step of forming a low refractive index material layer made of the low refractive index material on the high refractive index material layer; a groove section filler forming step of forming the groove section filler by trimming both lateral portions of the low refractive index material layer; and a second high refractive index material layer forming step of forming a high refractive index material layer so as to fill the both sides of the lateral portions of the groove section filler.