Optical transmission systems, devices, and methods
AssigneeBroadwing Corporation
InventorsJonathan L. Weston-Dawkes, Stefano Baroni, Marian Trnkus, Lotfi M. Benmohamed, Jean-Luc Ronarc'h
Life of this patent
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Abstract
Optical communications systems including grooming, protection, restoration, and migration on a unified network platform, and using a unified control plane. The systems may include combinations of optical bypass and mesh restoration, may include combinations of shared mesh and dedicate protection, and may be combinations of long haul, extended long haul, and ultra long haul systems. The systems may also include a configurable DWDM tier to accommodate dynamic traffic patterns, thereby allowing for increased operational flexibility.
Claims11
An optical communications system comprising:
- a plurality of transmitters;
- a plurality of receivers;
- a plurality of optical paths connecting the transmitters and the receivers;
- a node connecting at least two optical paths, wherein the node includes an optical switch connected to the at least two optical paths, a DWDM terminal connected to the optical switch, and a cross-connect connected to the DWDM terminal, wherein all traffic entering the node and not being dropped at the node passes through the optical switch and exits the node without undergoing an optical-electrical-optical conversion, wherein all traffic entering the node and not being dropped at the node passes through the optical switch and exits the node without passing through the DWDM terminal, and wherein local traffic is added and dropped through the cross-connect and DWDM terminal;
- a first additional node connecting at least two optical paths, wherein the first additional node includes an additional optical switch connected to the at least two optical paths connected to the first additional node, an additional DWDM terminal connected to the additional optical switch, and wherein the first additional node does not includes a cross-connect connected to the additional DWDM terminal.
Dependencies are inferred from the claim text.