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. 17, 2015
Filed:
Dec. 18, 2008
Hiroki Ooi, Kawasaki, JP;
Takafumi Terahara, Kawasaki, JP;
Kentaro Nakamura, Kawasaki, JP;
Chihiro Ohshima, Kawasaki, JP;
Tsuyoshi Yamamoto, Kawasaki, JP;
Hiroki Ooi, Kawasaki, JP;
Takafumi Terahara, Kawasaki, JP;
Kentaro Nakamura, Kawasaki, JP;
Chihiro Ohshima, Kawasaki, JP;
Tsuyoshi Yamamoto, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An optical adding and dropping device includes a drop section including an input port and having a through port and a plurality of drop ports set as output ports, a first multiplexer adapted to multiplex light from the through port and light from a plurality of add ports, and a spectrum foot removing section provided on the input side of the first multiplexer and adapted to remove a foot of a spectrum of light to be inputted from the add ports to the first multiplexer. The optical adding and dropping device can be configured at a low cost while it has adding and dropping functions.