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:
May. 27, 2025
Filed:
Jul. 06, 2020
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Hiroki Kawahara, Musashino, JP;
Takeshi Seki, Musashino, JP;
Sachio Suda, Musashino, JP;
Kohei Saito, Musashino, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
A wavelength cross-connect device is formed by connecting a plurality of wavelength cross-connect devices in a ring-like form with WDM networks for each band of a plurality of bands on the input/output sides of the wavelength cross-connect devices, and includes a link wavelength allocation control unit. The link wavelength allocation control unit performs control to set different optical paths through which optical signals of the same wavelength are transmitted in the same zone between wavelength cross-connect devices, in the WDM networks of different bands in the same zone.