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US 2003/0194232 A1Published application
Optical communication system
AssigneeCisco Photonics Italy S.r.L.
InventorsFulvio Arecco, Marcos Antonio Brandao Sanches, Francesca Loseto, Piergiovanni Matrona, Mario Tamburello
Life of this patent
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Abstract
Communicating a signal includes receiving the signal at a primary device of a switching system, where the primary device is associated with a primary path along which the signal is propagating. A primary overmodulation signal associated with the primary path is generated. The absence of the primary overmodulation signal is detected, and an operating signal is sent from the primary device to a secondary device of the switching system, where the secondary device is associated with a secondary path. The operating signal operates to initiate propagation of the signal along the secondary path.
Claims20
A method for communicating a signal, comprising:
- receiving a signal at a primary device of a switching system, the primary device associated with a primary path, the signal propagating along the primary path;
- generating a primary overmodulation signal associated with the primary path;
- detecting an absence of the primary overmodulation signal associated with the primary path;
- and
- sending an operating signal from the primary device to a secondary device of the switching system, the secondary device associated with a secondary path, the operating signal operable to initiate propagation of the signal along the secondary path.
2 more elements
A system for communicating a signal, comprising:
- an input of a primary device operable to receive a signal, the primary device associated with a primary path, the signal propagating along the primary path;
- a primary modulation device coupled to the input and operable to generate a primary overmodulation signal associated with the primary path;
- a primary detection device coupled to the primary modulation device and operable to detect an absence of the primary overmodulation signal associated with the primary path;
- and
- a primary operating device coupled to the primary detection device and operable to send an operating signal from the primary device to a secondary device of the switching system, the secondary device associated with a secondary path, the operating signal operable to initiate propagation of the signal along the secondary path.
2 more elements
Logic for communicating a signal, the logic embodied in a medium and operable to:
- receive a signal at a primary device of a switching system, the primary device associated with a primary path, the signal propagating along the primary path;
- generate a primary overmodulation signal associated with the primary path;
- detect an absence of the primary overmodulation signal associated with the primary path;
- and
- send an operating signal from the primary device to a secondary device of the switching system, the secondary device associated with a secondary path, the operating signal operable to initiate propagation of the signal along the secondary path.
2 more elements
A system for communicating a signal, comprising:
- means for receiving a signal at a primary device of a switching system, the primary device associated with a primary path, the signal propagating along the primary path;
- means for generating a primary overmodulation signal associated with the primary path;
- means for detecting an absence of the primary overmodulation signal associated with the primary path;
- and
- means for sending an operating signal from the primary device to a secondary device of the switching system, the secondary device associated with a secondary path, the operating signal operable to initiate propagation of the signal along the secondary path.
2 more elements
A method for communicating a signal, comprising:
- splitting a signal;
- directing the signal to a primary path and a secondary path;
- receiving the signal at a primary device of a switching system, the primary device associated with the primary path, the signal propagating along the primary path, the primary path comprising one or more optical amplifiers;
- generating a primary overmodulation signal associated with the primary path, the primary overmodulation signal comprising a first primary overmodulation signal associated with the primary path comprising a first primary path;
- detecting an absence of the primary overmodulation signal associated with the primary path;
- disabling a second primary overmodulation signal associated with a second primary path in response to detecting the absence of the primary overmodulation signal, the first primary path associated with a first propagation direction, the second primary path associated with a second propagation direction opposite to the first propagation direction;
- sending an operating signal from the primary device to a secondary device of the switching system, the secondary device associated with the secondary path, the operating signal operable to initiate propagation of the signal along the secondary path;
- preventing the signal from propagating along the primary path in response to detecting the absence of the primary overmodulation signal, and propagating the signal along the secondary path in response to the operating signal, or switching the signal from the primary path to the secondary path at a switch in response to detecting the absence of the primary overmodulation signal;
- generating a secondary overmodulation signal associated with the secondary path;
- detecting an absence of the secondary overmodulation signal associated with the secondary path;
- and
- providing a notification of the absence of the secondary overmodulation signal.
9 more elements
Dependencies are inferred from the claim text.