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:
Feb. 14, 2006
Filed:
Jul. 26, 2001
Applicants:
Chang Hee Lee, Taejon, KR;
Hyun Deok Kim, Taegu, KR;
Tae Won OH, Taegu, KR;
Shin Jeong Hun, Taegu, KR;
Cho Yun Hee, Seoul, KR;
Inventors:
Chang Hee Lee, Taejon, KR;
Hyun Deok Kim, Taegu, KR;
Tae Won Oh, Taegu, KR;
Shin Jeong Hun, Taegu, KR;
Cho Yun Hee, Seoul, KR;
Assignee:
Korea Advanced Institute of Science & Technology, Taejon, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/28 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a 4-port wavelength selective router and the add/drop multiplexer using the above router. More particularly, it relates to a 4-port wavelength selective router that can effectively routes counter-propagating signals while suppressing multiple reflections generated in the bidirectional transmission systems and networks.