Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2007-06-26
2007-06-26
Leung, Christina (Department: 2613)
Optical communications
Multiplex
Wavelength division or frequency division
C398S068000
Reexamination Certificate
active
10088503
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.
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Goto Koji
Mizuochi Takashi
Nakagawa Shin-ichi
Shibano Eiichi
Shimizu Katsuhiro
KDDI Submarine Cable Systems Inc.
Leung Christina
Mitsubishi Denki & Kabushiki Kaisha
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
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