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AssigneeAlcatel
InventorsMartin Vigoureux, Maher Ali, Olivier Audouin, Emmanuel Dotaro, Richard Douville, David Elie Dit Cosaque
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A device (D) is dedicated to controlling auxiliary paths (CP, SC) in a hybrid optical communications network comprising a multiplicity of hybrid nodes (NO) including switching means (CM1) and color converter means (CM2) and interconnected by transmission lines. The device comprises processor means (MT) adapted, in the event of a fault on at least one of the transmission lines carrying a connection and at the ends of which are two hybrid nodes (NO) adapted to effect switching in opaque mode, to command the switching means (CM1) of at least one of the hybrid nodes (NO) to switch the optical signals taking the connection to a selected auxiliary path independent of color and passing through said nodes, where applicable after color conversion of the optical signals by the associated converter means (CM2).
A method of controlling auxiliary paths (CP, SC) in a hybrid optical communications network comprising a multiplicity of hybrid nodes (NO, NT) interconnected by transmission lines, which method is characterized in that, in the event of a fault on a transmission line along which a connection passes, the method consists in determining at least one auxiliary path independent of color between the hybrid nodes (NO) at the ends of said faulty transmission line and at which said connection can be switched in opaque mode, and then in switching optical signals taking said connection to said auxiliary path, where applicable after color conversion.
A device (D) for controlling auxiliary paths (CP, SC) in a hybrid optical communications network comprising a multiplicity of hybrid nodes (NO, NT) including switching means (CM1) and color converter means (CM2) and interconnected by transmission lines (LT), which device is characterized in that it comprises processor means (MT) adapted, in the event of a fault on at least one of said transmission lines carrying a connection and at the ends of which are two hybrid nodes (NO) adapted to effect switching in opaque mode, to command said switching means (CM1) of at least one of said two hybrid nodes to switch the optical signals taking said connection to a selected auxiliary path (CP, SC) independent of color and passing through said nodes (NO), where applicable after color conversion of said optical signals by said associated converter means (CM2).
Dependencies are inferred from the claim text.