Virtualized sections for sectional control of optical links
AssigneeCiena Corporation
InventorsChoudhury A. Al Sayeed, Mark Hinds
Life of this patent
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Abstract
Systems and methods are implemented at an Optical Add/Drop Multiplexer (OADM) node using virtual sections to provide sectional control over an optical link over a foreign-controlled optical network. The systems and methods include obtaining and storing a first power spectral density snapshot of an optical link, from an optical spectrum monitor and when the optical link is in a non-fault condition; responsive to detection of a fault on channels traversing the optical link, obtaining a second power spectral density snapshot at a receiving end of the optical link; analyzing the first power spectral density snapshot and the second power spectral density snapshot; and determining the fault is on the optical link based on the analyzing.
Claims20
A non-transitory computer-readable storage medium having computer readable code stored thereon for programming a device to perform steps of:
- obtaining and storing a first power spectral density snapshot of an optical link, from an optical spectrum monitor and when the optical link is in a non-fault condition;
- responsive to detection of a fault on at least one channel traversing the optical link based on a received notification, obtaining a second power spectral density snapshot at a receiving end of the optical link;
- analyzing the first power spectral density snapshot and the second power spectral density snapshot via cross-correlation:
- and
- determining the fault is on the optical link based on the analyzing;
- wherein the optical link is a foreign-controlled link.
An apparatus comprising:
- a processor communicatively coupled to an optical spectrum monitor, wherein memory storing instructions that, when executed, cause the processor to
- obtain and store a first power spectral density snapshot of an optical link, from the optical spectrum monitor and when the optical link is in a non-fault condition,
- responsive to detection of a fault on at least one channel traversing the optical link based on a received notification, obtain a second power spectral density snapshot at a receiving end of the optical link,
- analyze the first power spectral density snapshot and the second power spectral density snapshot via cross-correlation, and
- determine the fault is on the optical link based on the analyze;
- wherein the optical link is a foreign-controlled link.
A method comprising:
- obtaining and storing a first power spectral density snapshot of an optical link, from an optical spectrum monitor and when the optical link is in a non-fault condition;
- responsive to detection of a fault on at least one channel traversing the optical link based on a received notification, obtaining a second power spectral density snapshot at a receiving end of the optical link;
- analyzing the first power spectral density snapshot and the second power spectral density snapshot cross-correlation;
- and
- determining the fault is on the optical link based on the analyzing;
- wherein the optical link is a foreign-controlled link.
Dependencies are inferred from the claim text.