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:
Aug. 24, 2004
Filed:
Aug. 23, 2000
Akira Okada, Tokyo, JP;
Kazutoshi Kato, Isehara, JP;
Kazuto Noguchi, Atsugi, JP;
Yoshihisa Sakai, Isehara, JP;
Takashi Sakamoto, Zama, JP;
Morito Matsuoka, Atsugi, JP;
Sen-ichi Suzuki, Mito, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
An optical communication equipment comprises shared optical sources to be shared by communication nodes , the wavelengths of optical signals are converted into desired wavelengths &lgr; according to the addressed information of the corresponding optical label signals by using the shared optical sources and routed to the addressed communication nodes without being converted into electrical signals by using the wavelength routing function of the cyclic-wavelength arrayed-waveguide grating (AWG) . The load of each communication node can be reduced by incorporating the multi-wavelength optical sources, which can be shared among individual communication nodes, into the router . Further, each communication node is provided with an optical gate or the like for returning the optical signal to the communication node from which the optical signal has been transmitted through the router in order to adjust the transmission time lag between the optical signal and the corresponding optical label signal by the controllers