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. 01, 2003
Filed:
Nov. 27, 2001
Applicant:
Inventors:
Myung Hyun Lee, Daejon-Shi, KR;
Jung Jin Ju, Daejon-Shi, KR;
Jung Yun Do, Daejon-Shi, KR;
Seung Koo Park, Daejon-Shi, KR;
Sun Tak Park, Anyang-Shi, KR;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/35 ; G02B 6/26 ; G02B 6/122 ;
U.S. Cl.
CPC ...
G02B 6/35 ; G02B 6/26 ; G02B 6/122 ;
Abstract
The present invention makes light input/output portions being a coupling portion with an optical fiber and a Y-branch using a rib waveguide, and a bending portion using a channel waveguide, wherein the rib waveguide and the channel waveguide is connected by a tapered waveguide. So that the present invention can improve the crosstalk, loss and operating voltage characteristics.