Photonic cross-connect with reconfigurable add-drop-functionality
First Claim
1. A photonic cross-connector comprising a cross-connect section with a receiving part including first distributer components receiving incoming super-channels, each represented by a group of sub-channels, and at least two drop outputs, each for dropping at least one drop super-channel, and comprising a transmitting part including further combiner components receiving express signals from the receiving part and emitting outgoing WDM signals and having at least two add-inputs for adding at least an add super-channels, the cross-connect furthercomprisinga division-multiplex section, having inputs that are connected to the at least two drop outputs of the receiving part, with a cyclic filter, each filter input receiving a drop super-channel and outputting sub-channels from said super-channels cyclically shifted at filter outputs such that sub-channels from super-channels having a same frequency band and outputted at a same output have different wavelengths;
- a transponder arrangement with receivers, each receiving at least a sub-channel from one of said filter outputs of the cyclic filter, whereat each receiver is tunable for extracting one sub-channel, and with transmitters, each outputting a sub-channel fed to an optical combiner outputting said add super-channels fed to at least two add inputs of said transmitting part of the cross-connect section, whereat each transmitter is tuneable for generating a sub-channel of an add super-channel.
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Accused Products
Abstract
A photonic cross-connect arrangement is presented which is able to cope with the transmission of super-channels, wherein complete super-channels are dropped and added to change a direction of transport. At least a cyclic filter is used in a drop-branch of a cross-connect for dividing a super-channel into sub-channels and/or at least a further cyclic filter is used in an add-branch to configure a super-channel.
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Citations
11 Claims
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1. A photonic cross-connector comprising a cross-connect section with a receiving part including first distributer components receiving incoming super-channels, each represented by a group of sub-channels, and at least two drop outputs, each for dropping at least one drop super-channel, and comprising a transmitting part including further combiner components receiving express signals from the receiving part and emitting outgoing WDM signals and having at least two add-inputs for adding at least an add super-channels, the cross-connect further
comprising a division-multiplex section, having inputs that are connected to the at least two drop outputs of the receiving part, with a cyclic filter, each filter input receiving a drop super-channel and outputting sub-channels from said super-channels cyclically shifted at filter outputs such that sub-channels from super-channels having a same frequency band and outputted at a same output have different wavelengths; a transponder arrangement with receivers, each receiving at least a sub-channel from one of said filter outputs of the cyclic filter, whereat each receiver is tunable for extracting one sub-channel, and with transmitters, each outputting a sub-channel fed to an optical combiner outputting said add super-channels fed to at least two add inputs of said transmitting part of the cross-connect section, whereat each transmitter is tuneable for generating a sub-channel of an add super-channel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
Specification