Reconfigurable optical add/drop multiplexer network element for C-band and L-band optical signals
First Claim
Patent Images
1. A system for routing C-band and L-band optical signals, comprising:
- (a) a C-band subsystem comprising one or more reconfigurable optical add/drop multiplexer (ROADM) modules arranged to select one or more C-band optical signals from a plurality of optical wavelength division multiplexed (WDM) signals received by the C-band subsystem, the C-band subsystem further comprising;
(i) a plurality of optical switches arranged to select the one or more C-band optical signals from the plurality of optical WDM signals received by the C-band subsystem; and
(ii) at least one multiplexer arranged to multiplex the one or more C-band optical signals selected by the plurality of optical switches;
(b) an L-band subsystem comprising one or more ROADM modules arranged to select one or more L-band optical signals from a plurality of optical WDM signals received by the L-band subsystem, the L-band subsystem further comprising;
(i) a plurality of optical switches arranged to select the one or more L-band optical signals from the plurality of optical WDM signals received by the L-band subsystem; and
(ii) at least one multiplexer arranged to multiplex the one or more L-band optical signals selected by the plurality of optical switches;
(c) at least two amplifiers arranged to amplify signals outputted by at least one of the multiplexers;
(d) a dispersion compensating unit interposed between an output of one of the at least two amplifiers and an input of another of the at least two amplifiers;
(e) at least one communication path for forwarding signals selected by the C-band and L-band subsystems; and
(f) a combiner arranged to combine the one or more C-band optical signals and the one or more L-band optical signals selected by the C-band and L-band subsystems.
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Abstract
A method for routing C-band and L-band optical signals, and a system, apparatus, and computer program that operate in accordance with the method. The method comprises selecting one or more C-band optical signals using one or more C-band components, resulting in one or more selected C-band optical signals. One or more L-band optical signals are selected using one or more L-band components, resulting in one or more selected L-band optical signals. The selected C-band and L-band optical signals are combined.
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Citations
20 Claims
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1. A system for routing C-band and L-band optical signals, comprising:
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(a) a C-band subsystem comprising one or more reconfigurable optical add/drop multiplexer (ROADM) modules arranged to select one or more C-band optical signals from a plurality of optical wavelength division multiplexed (WDM) signals received by the C-band subsystem, the C-band subsystem further comprising; (i) a plurality of optical switches arranged to select the one or more C-band optical signals from the plurality of optical WDM signals received by the C-band subsystem; and (ii) at least one multiplexer arranged to multiplex the one or more C-band optical signals selected by the plurality of optical switches; (b) an L-band subsystem comprising one or more ROADM modules arranged to select one or more L-band optical signals from a plurality of optical WDM signals received by the L-band subsystem, the L-band subsystem further comprising; (i) a plurality of optical switches arranged to select the one or more L-band optical signals from the plurality of optical WDM signals received by the L-band subsystem; and (ii) at least one multiplexer arranged to multiplex the one or more L-band optical signals selected by the plurality of optical switches; (c) at least two amplifiers arranged to amplify signals outputted by at least one of the multiplexers; (d) a dispersion compensating unit interposed between an output of one of the at least two amplifiers and an input of another of the at least two amplifiers; (e) at least one communication path for forwarding signals selected by the C-band and L-band subsystems; and (f) a combiner arranged to combine the one or more C-band optical signals and the one or more L-band optical signals selected by the C-band and L-band subsystems. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for routing C-band and L-band optical signals, comprising:
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selecting one or more C-band optical signals from a plurality of optical wavelength division multiplexed (WDM) signals received by a C-band subsystem comprising one or more reconfigurable optical add/drop multiplexer (ROADM) modules and a plurality of optical switches arranged to select the one or more C-band optical signals, resulting in one or more selected C-band optical signals; multiplexing the one or more selected C-band optical signals, resulting in one or more multiplexed C-band optical signals; selecting one or more L-band optical signals from a plurality of optical WDM signals received by an L-band subsystem comprising one or more ROADM modules and a plurality of optical switches arranged to select the one or more L-band optical signals, resulting in one or more selected L-band optical signals; multiplexing the one or more selected L-band optical signals, resulting in one or more multiplexed L-band optical signals; amplifying at least one of the one or more multiplexed C-band optical signals and the one or more multiplexed L-band optical signals, resulting in one or more amplified optical signals; inputting the one or more amplified optical signals into one or more dispersion compensating modules; and combining the selected C-band and L-band optical signals. - View Dependent Claims (17, 18, 19, 20)
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Specification