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:
Mar. 06, 2012
Filed:
Oct. 22, 2010
Yuichi Akiyama, Kawasaki, JP;
Takafumi Terahara, Kawasaki, JP;
Hiroki Ooi, Kawasaki, JP;
Jens C. Rasmussen, Kawasaki, JP;
Akira Miura, Kawasaki, JP;
Akihiko Isomura, Kawasaki, JP;
Yuichi Akiyama, Kawasaki, JP;
Takafumi Terahara, Kawasaki, JP;
Hiroki Ooi, Kawasaki, JP;
Jens C. Rasmussen, Kawasaki, JP;
Akira Miura, Kawasaki, JP;
Akihiko Isomura, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An optical add/drop multiplexer includes a first optical coupler receiving an optical signal including a plurality of multiplexed wavelengths, a wavelength blocker receiving the optical signal from the first optical coupler, and blocking at least one wavelength of the plurality of multiplexed wavelengths, a first wavelength selective switch, having one input port receiving the outputted optical signal from the first optical coupler and a plurality of output ports, demultiplexing a plurality of arbitrarily selected multiplexed wavelengths from the received optical signal, a second wavelength selective switch, having a plurality of input ports, each input port receiving a different optical signal and one output port, multiplexing a plurality of arbitrarily selected wavelength signals on the plurality of input ports, and a second optical coupler receiving the optical signal output from the wavelength blocker and multiplexed wavelength signal from the second wavelength selective switch.