Protected optical switching matrix
AssigneeAlcatel
InventorsMichel Sotom, Claude Lebouetté, François-Xavier Ollivier, Guy Franceus
Life of this patent
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Abstract
A protected optical switch matrix having N inputs and N outputs and including an optical switching fabric (S2-S2′), an input interface (S1) performing wavelength conversion and an output interface (S3) performing wavelength filtering. The input interface (S1) and the output interface (S3) are protected by redundancy provided by r redundant units for E working units where r is a number very much less than E.
Claims5
A protected optical switch matrix having N inputs and N outputs and including an optical switching fabric, an input interface performing wavelength conversion and an output interface performing wavelength filtering,
- wherein the input interface and the output interface are protected by redundancy provided by r redundant units for E working units where r is a number substantially less than E, and the input interface includes at least one group of E working wavelength converters and r redundant converters which are all tuned permanently to the same wavelength.
A protected optical switch matrix, comprising:
- an input interface configured to receive N inputs and performing wavelength conversion;
- an output interface configured to generate N outputs and performing wavelength filtering;
- an optical divider coupled between said input interface and a mixed spatial switching matrix;
- and
- an optical switcher coupled between said mixed spatial switching matrix and said output interface, wherein said input interface and said output interface comprise a plurality of E working units and a plurality of r redundant units, each of said r redundant units comprising a permanently tuned redundant converter in said input interface and a variable tuning filter in said output interface, and r is substantially less than E.
Dependencies are inferred from the claim text.