Resilient optical networking
First Claim
Patent Images
1. An optical communication system, comprising:
- a plurality of optical system nodes that each includes at least one reconfigurable optical add/drop multiplexer (ROADM), the optical system nodes each having at least one client side port and at least one line side port;
a plurality of optical space switches, each optical space switch being operatively coupled to the line side port of one of the plurality of optical system nodes; and
a plurality of optical fibers, each of the optical fibers coupling one of the optical space switches to another of the optical space switches.
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Abstract
An optical communication system includes a plurality of optical system nodes, a plurality of optical space switches and a plurality of optical fibers. The plurality of optical system nodes each includes at least one reconfigurable optical add/drop multiplexer (ROADM). The optical system nodes each have at least one client side port and at least one line side port. Each optical space switch is operatively coupled to the line side port of one of the plurality of optical system nodes. Each of the optical fibers couples one of the optical space switches to another of the optical space switches.
26 Citations
38 Claims
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1. An optical communication system, comprising:
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a plurality of optical system nodes that each includes at least one reconfigurable optical add/drop multiplexer (ROADM), the optical system nodes each having at least one client side port and at least one line side port; a plurality of optical space switches, each optical space switch being operatively coupled to the line side port of one of the plurality of optical system nodes; and a plurality of optical fibers, each of the optical fibers coupling one of the optical space switches to another of the optical space switches. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 36, 37, 38)
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17. A method of reconfiguring a signal path through an optical communication system that includes a plurality of optically interconnected optical system nodes each having reconfigurable optical add/drop multiplexing functionality, comprising:
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determining that a preconfigured signal path between first and second ones of the optical system nodes is unavailable; and upon determining that the preconfigured signal path is unavailable, using a first optical space switch associated with the first optical system node to bypass the first optical system node and redirect optical channels that are to traverse the preconfigured signal path to a third optical space switch associated with a third one of the optical system nodes, the third optical space switch being able to further redirect the optical channels to a second optical space switch associated with the second optical system node. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification