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. 21, 2006
Filed:
Dec. 06, 2001
Applicants:
Tadashi Sakamoto, Tokyo, JP;
Shigeki Aisawa, Tokyo, JP;
Masahiko Jinno, Tokyo, JP;
Seiji Norimatsu, Tokyo, JP;
Jun-ichi Kani, Tokyo, JP;
Inventors:
Tadashi Sakamoto, Tokyo, JP;
Shigeki Aisawa, Tokyo, JP;
Masahiko Jinno, Tokyo, JP;
Seiji Norimatsu, Tokyo, JP;
Jun-ichi Kani, Tokyo, JP;
Assignee:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J 4/00 (2006.01); H04J 14/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a wavelength division multiplexed optical transmission system wherein the zero dispersion wavelength of the optical fiber transmission pathis 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 nm and 1650 nm.