ROADM architecture for wide spectrum channels
AssigneeCiena Corporation
InventorsSerge Asselin, David W. Boertjes
Life of this patent
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Abstract
A Reconfigurable Optical Add/Drop Multiplexer (ROADM) node includes a plurality of degrees; and one or more fiber/space switches, wherein each of the plurality of degrees connect to the one or more fiber/space switches, and the one or more fiber/space switches are configured to interconnect any of the plurality of degrees and optionally one or more add/drop components. The plurality of degrees are partially interconnected to one another, while supporting any-to-any interconnect based on a configuration of the one or more fiber/space switches.
Claims20
A Reconfigurable Optical Add/Drop Multiplexer (ROADM) node comprising:
- a plurality of degrees;
- one or more fiber/space switches,
- wherein each of the plurality of degrees connect to the one or more fiber/space switches, and the one or more fiber/space switches are configured to interconnect any of the plurality of degrees,
- wherein each of the plurality of degrees comprises a Wavelength Selective Switch (WSS) configured to switch spectral slices, each spectral slice comprising a contiguous swath of optical spectrum, and
- wherein the one or more fiber/space switches provide a dynamically reconfigurable partial-mesh interconnection between the plurality of degrees, such that only degrees requiring interconnection based on traffic demands are interconnected.
A method of operating a Reconfigurable Optical Add/Drop Multiplexer (ROADM) node comprising steps of:
- responsive to interconnecting a plurality of degrees and one or more add/drop components to one or more fiber/space switches, configuring the one or more fiber/space switches to selectively and partially interconnect the plurality of degrees to one another;
- and
- responsive to a requirement to add/drop channels at the ROADM node, configuring the one or more fiber/space switches to selectively interconnect the plurality of degrees to the one or more add/drop components,
- wherein each of the plurality of degrees comprises a Wavelength Selective Switch (WSS) configured to switch spectral slices, each spectral slice comprising a contiguous swath of optical spectrum, and
- wherein the one or more fiber/space switches provide a dynamically reconfigurable partial-mesh interconnection between the plurality of degrees, such that only degrees requiring interconnection based on traffic demands are interconnected.
Dependencies are inferred from the claim text.