TRANSPONDER AGGREGATOR-BASED OPTICAL LOOPBACK IN A MD-ROADM
First Claim
1. A multi-degree colorless, directionless, contention-less, reconfigurable optical add/drop multiplexer, comprising:
- a reconfigurable optical add/drop multiplexer section for performing connect operations for wavelength division multiplexing signals among all degrees, the section having a plurality of subsections, each of the subsections corresponding to a respective one of the degrees and having an optical separator at an input side and an optical combiner at an output side;
a transponder aggregator section having a split-and-select switch-based transponder aggregator; and
an optical line loopback having a connection path between the optical separator at the input side and the optical combiner at the output side of at least one of the subsections.
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Accused Products
Abstract
The present principles are directed to a transponder aggregator-based optical loopback in a multi-degree colorless, directionless, contention-less, reconfigurable optical add/drop multiplexer. The multiplexer includes a reconfigurable optical add/drop multiplexer section for performing connect operations for wavelength division multiplexing signals among all degrees. The section has a plurality of subsections. Each of the subsections corresponds to a respective one of the degrees and has an optical separator at an input side and an optical combiner at an output side. The multiplexer further includes a transponder aggregator section having a split-and-select switch-based transponder aggregator. The multiplexer also includes an optical line loopback having a connection path between the optical separator at the input side and the optical combiner at the output side of at least one of the subsections.
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Citations
16 Claims
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1. A multi-degree colorless, directionless, contention-less, reconfigurable optical add/drop multiplexer, comprising:
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a reconfigurable optical add/drop multiplexer section for performing connect operations for wavelength division multiplexing signals among all degrees, the section having a plurality of subsections, each of the subsections corresponding to a respective one of the degrees and having an optical separator at an input side and an optical combiner at an output side; a transponder aggregator section having a split-and-select switch-based transponder aggregator; and an optical line loopback having a connection path between the optical separator at the input side and the optical combiner at the output side of at least one of the subsections. - View Dependent Claims (2)
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3. A method, comprising
providing a multi-degree colorless, directionless, contention-less, reconfigurable optical add/drop multiplexer having a reconfigurable optical add/drop multiplexer section and a transponder aggregator section, the multiplexer section having a plurality of subsections, each of the subsections corresponding to a respective one of the degrees and having an optical separator at an input side connected to an input of the transponder aggregator section and an optical combiner at an output side connected to an output of the transponder aggregator section; adding an optical line loopback having a connection path between the optical separator at the input side and the optical combiner at the output side of at least one of the subsections.
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4. A multi-degree colorless, directionless, contention-less, reconfigurable optical add/drop multiplexer, comprising:
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a reconfigurable optical add/drop multiplexer section for performing connect operations for wavelength division multiplexing signals among all degrees; a transponder aggregator section having a split-and-select switch-based transponder aggregator, the aggregator having a (N+1)×
(L+1) split-and-select switch for a drop side of the aggregator and another (N+1)×
(L+1) split-and-select switch for an add side of the aggregator, wherein N is a number of the degrees, and L is a number of transponders connected to the aggregator; andan optical loopback for external links to the multi-degree reconfigurable optical add/drop multiplexer. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification