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AssigneeTelefonaktiebolaget LM Ericsson
InventorsMagnus Oberg, Bo Lagerstrom, Mangus Sundelin, Bengt Johansson
Estimating the term…
The present invention relates to an arrangement and a method for detecting faults in an optical fiber network, comprising at least two nodes arranged with at least two optical fibers to a bus with the end nodes connected via two spare fibers. Every node comprising a central module (50), at least two protection switches (60,61) and optical amplifiers (21,22,23,24) and said central module comprising at least one central processor (51), at least one logical unit (52), at least one protection signal transmitter (53) and at least one protection signal monitor (54). The end nodes of the bus transmit a protection signal in at least one direction of the bus and said end nodes can detect the own protection signal and the protection signal transmitted from the other end node. All nodes in the bus can detect Optical Power Loss, OPL. The bus will reshape into new end nodes in case of a fault.
An arrangement for detecting faults in an optical fibre network comprising:
A method of detecting faults in an optical fibre network that includes at least two nodes which coact with at least two optical fibres to form a bus, wherein the bus end-nodes are coupled to a pair of spare fibres, and wherein each node has a central module which includes at least one central processor, at least two protection switches, and optical amplifiers, wherein said method comprises the steps of:
Dependencies are inferred from the claim text.