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. 03, 2002
Filed:
Mar. 17, 1999
Applicant:
Inventors:
Tadashi Sakamoto, Tokyo, JP;
Shigeki Aisawa, Tokyo, JP;
Masahiko Jinno, Tokyo, JP;
Seiji Norimatsu, Tokyo, JP;
Jun-ichi Kani, Tokyo, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 1/402 ;
U.S. Cl.
CPC ...
H04J 1/402 ;
Abstract
In a wavelength division multiplexed optical transmission system wherein the zero dispersion wavelength of the optical fiber transmission path is in the 1550 nm region, among multiplexed optical signals, the wavelengths of either of at least two optical signals are allocated between 1450 nm and 1530 nm, or between 1570 mn and 1650 nm.