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:
Jun. 26, 2007
Filed:
Jul. 31, 2000
Shigeo Yamanaka, Tokyo, JP;
Takashi Mizuochi, Tokyo, JP;
Katsuhiro Shimizu, Tokyo, JP;
Koji Goto, Tokyo, JP;
Shinichi Nakagawa, Tokyo, JP;
Eiichi Shibano, Tokyo, JP;
Tadami Yasuda, Tokyo, JP;
Shigeo Yamanaka, Tokyo, JP;
Takashi Mizuochi, Tokyo, JP;
Katsuhiro Shimizu, Tokyo, JP;
Koji Goto, Tokyo, JP;
Shinichi Nakagawa, Tokyo, JP;
Eiichi Shibano, Tokyo, JP;
Tadami Yasuda, Tokyo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
KDDI Submarine Cable Systems Inc., Tokyo, JP;
Abstract
As is described above, an optical wavelength division multiplexing and transmission apparatus according to the present invention has the configuration in which a plurality of slave racks coupling to a master rack can be additionally installed one after another with the master rack. Therefore, in cases where it is desired to expand a function of a transmitter and a function of a receiver due to the increase of a quality of information to be transmitted, the additional installation of the slave rack can be performed without exerting influence on a communication means installed in advance and currently used. Accordingly, it can be expected that the optical wavelength division multiplexing and transmission apparatus is adapted for the optical communication service which is more and more increased in the future.