Apparatus And Method For Monitoring An Optical Coherent Network
First Claim
1. A method comprising:
- determining at an optical network monitoring device whether a value for at least one parameter that characterizes an optical signal which traverses a link of an optical coherent network is above a corresponding threshold; and
setting an alarm indicator when the value is larger than the corresponding threshold;
wherein the at least one corresponding parameter is at least one of polarization mode dispersion, polarization dependent loss and chromatic dispersion.
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Abstract
An example method determines at an optical network monitoring device whether a value for at least one parameter that characterizes an optical signal which traverses a link of an optical coherent network is above a corresponding threshold and sets an alarm indicator when the value is larger than the corresponding threshold. The at least one corresponding parameter is at least one of polarization mode dispersion, polarization dependent loss and chromatic dispersion. An example method may obtains the optical signal from the link of the coherent optical network and determines the value for the at least one parameter, which may entail calculating the value based on the optical signal and filter coefficients of a filter that can be utilized to compensate the optical signal. In another embodiment, the value for the at least one parameter is received from a monitoring unit that determined the value from the optical signal
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Citations
23 Claims
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1. A method comprising:
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determining at an optical network monitoring device whether a value for at least one parameter that characterizes an optical signal which traverses a link of an optical coherent network is above a corresponding threshold; and setting an alarm indicator when the value is larger than the corresponding threshold; wherein the at least one corresponding parameter is at least one of polarization mode dispersion, polarization dependent loss and chromatic dispersion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus comprising:
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a memory for storing a value for at least one parameter that characterizes an optical signal that traverses a link of a coherent optical network, the at least one parameter being at least one of polarization mode dispersion, polarization dependent loss and chromatic dispersion; and a controller for determining whether the value is above a corresponding threshold for the at least one parameter and setting an alarm indicator when the value is larger than the corresponding threshold. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A system comprising:
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a monitoring device comprising a controller configured to set an alarm indicator when a value for at least one parameter that characterizes an optical signal that traverses a link of a coherent optical network is above a corresponding threshold, the at least one parameter being at least one of polarization mode dispersion, polarization dependent loss and chromatic dispersion; and an optical coherent receiver. - View Dependent Claims (23)
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Specification