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:
Oct. 16, 2007
Filed:
May. 29, 2002
Susumu Kinoshita, Plano, TX (US);
Koji Takeguchi, Richardson, TX (US);
Ashwin Anil Gumaste, Richardson, TX (US);
Susumu Kinoshita, Plano, TX (US);
Koji Takeguchi, Richardson, TX (US);
Ashwin Anil Gumaste, Richardson, TX (US);
Fujitsu Limited, Kawasaki, JP;
Abstract
An optical network includes a plurality of subnets. The subnets each include a plurality of add/drop nodes coupled to the optical ring and operable to passively add and drop traffic to and from the optical ring. The network further includes a plurality of gateway nodes. The gateway nodes are each coupled to the optical ring at a boundary between neighboring subnets and operable to selectively pass and terminate wavelengths between subnets to allow wavelength reuse in the subnets and to provide protection switching.