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:
Dec. 13, 2011
Filed:
Nov. 14, 2006
Applicants:
Chang-hee Lee, Daejeon, KR;
Ki-man Choi, Daegu, KR;
Sil-gu Mun, Daegu, KR;
Jung-hyung Moon, Pusan, KR;
Inventors:
Chang-Hee Lee, Daejeon, KR;
Ki-Man Choi, Daegu, KR;
Sil-Gu Mun, Daegu, KR;
Jung-Hyung Moon, Pusan, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J 14/00 (2006.01); H04J 14/02 (2006.01); G02B 6/36 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention discloses a wavelength-division multiplexing passive optical network (WDM-PON) capable of high-bandwidth transmission for optical signals by using modulation format having high spectral efficiency. The WDM-PON according to the present invention provides a larger capacity and higher bandwidth transmission economically (at lower costs) by using a modulation format where spectral efficiency (a transmission bit number per a unit band width) is high, while using a low noise part of a light source.