Methods and systems for the performance analysis of fiber optic networks
First Claim
1. A method for the performance analysis of fiber optic networks, the method comprising:
- given a fiber optic network of interest, applying geographic segmentation to the fiber optic network by separating the fiber optic network into a predetermined number of individual non-overlapping segments defined by one or more optical add/drop placements;
given a plurality of impairments of interest, applying impairment segmentation to the plurality of impairments such that each of the plurality of impairments is treated separately;
calculating each of the plurality of impairments using a predetermined method selected to achieve a predetermined minimum required accuracy;
applying one or more concatenation rules to compute an overall impairment experienced by a signal that traverses more than one segment; and
applying one or more impairment scaling rules to estimate changes in configuration that lead to improved fiber optic network performance.
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Abstract
In general, the present invention provides novel approaches to signal propagation modeling that utilize the following: 1) geographic segmentation is applied by separating a large fiber optic network into individual non-overlapping segments, defined by optical add/drop placements; 2) impairment segmentation is applied, such that optical noise, self-phase, cross-phase, four-wave mixing, and other impairments are all treated separately; 3) each impairment is calculated by the most efficient approach to achieve the minimum required accuracy, the approaches being fully numeric, semi-analytic, or empirical; 4) impairment concatenation rules are applied to compute an overall impairment experienced by a signal that traverses more than one segment; and 5) impairment scaling rules are applied to rapidly estimate changes in configuration that can lead to improved performance (i.e. higher capacity, longer distance, or lower cost).
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Citations
20 Claims
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1. A method for the performance analysis of fiber optic networks, the method comprising:
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given a fiber optic network of interest, applying geographic segmentation to the fiber optic network by separating the fiber optic network into a predetermined number of individual non-overlapping segments defined by one or more optical add/drop placements;
given a plurality of impairments of interest, applying impairment segmentation to the plurality of impairments such that each of the plurality of impairments is treated separately;
calculating each of the plurality of impairments using a predetermined method selected to achieve a predetermined minimum required accuracy;
applying one or more concatenation rules to compute an overall impairment experienced by a signal that traverses more than one segment; and
applying one or more impairment scaling rules to estimate changes in configuration that lead to improved fiber optic network performance. - View Dependent Claims (2, 3)
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4. A system for the performance analysis of fiber optic networks, the system comprising:
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given a fiber optic network of interest, a first algorithm operable for applying geographic segmentation to the fiber optic network by separating the fiber optic network into a predetermined number of individual non-overlapping segments defined by one or more optical add/drop placements;
given a plurality of impairments of interest, a second algorithm operable for applying impairment segmentation to the plurality of impairments such that each of the plurality of impairments is treated separately;
a third algorithm operable for calculating each of the plurality of impairments using a predetermined method selected to achieve a predetermined minimum required accuracy;
a fourth algorithm operable for applying one or more concatenation rules to compute an overall impairment experienced by a signal that traverses more than one segment; and
a fifth algorithm operable for applying one or more impairment scaling rules to estimate changes in configuration that lead to improved fiber optic network performance. - View Dependent Claims (5, 6)
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7. A method for the performance analysis of fiber optic networks, the method comprising:
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given a fiber optic network of interest, separating the fiber optic network into a plurality of segments;
performing an optical line amplifier (OLA) chain analysis of each of the plurality of segments; and
performing an impairment analysis of each of the plurality of segments, wherein the impairment analysis comprises a plurality of impairment sub-analyses, each of the plurality of impairment sub-analyses limited to an analysis of one predetermined impairment. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification