Dispersion management in branched optical networks
AssigneeTyco Telecommunications (US) Inc.
InventorsStuart Abbott, Ekaterina Golovchenko, Michael Vaa
Life of this patent
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Abstract
Dispersion may be managed in a branched optical network by using transmission segments having a single period segment dispersion map. One or more of such segments may be coupled to network nodes such as terminals or branching units such that dispersion may be managed even when the network is reconfigured. In one embodiment, a single period segment dispersion map provides dispersion compensation at the ends of the segment. In another embodiment, a single period segment dispersion-map provides dispersion compensation at the middle of the segment.
Claims26
A branched optical network, comprising:
- a plurality of network nodes;
- and
- a plurality of optical transmission segments extending from at least one of said network nodes, each of said optical transmission segments comprises a plurality of fiber spans arranged to form at least two sub-segments, wherein one of said sub-segments is configured to provide positive dispersion and another of said sub-segments is configured to provide negative dispersion such that each of said optical transmission segments has a single period segment dispersion map.
A branched optical network, comprising:
- a plurality of network nodes;
- and
- at least three optical transmission segments extending from at least one of said network nodes, each of said optical transmission segments comprises at least one dispersion shifted fiber span and at least one dispersion compensating fiber span providing a single period dispersion map, said optical transmission segments providing a plurality of different optical paths for data transmission.
A branched optical network, comprising:
- a plurality of network nodes;
- and
- a plurality of optical transmission segments extending from at least one of said network nodes, each of said optical transmission segments comprising at least two different fiber types having two different dispersion characteristics, wherein said two different fiber types are arranged in at least three regions of fiber having a common fiber type to provide a symmetric single period segment dispersion map.
A method for constructing a branched optical network, comprising:
- providing a plurality of fiber spans;
- providing a plurality of network nodes;
- constructing a plurality of optical transmission segments from said fiber spans, wherein said fiber spans are arranged to form at least two sub-segments, wherein one of said sub-segments provides positive dispersion and another of said sub-segments provides negative dispersion such that each of said optical transmission segments has a single period dispersion map;
- and
- coupling said optical transmission segments between network nodes, wherein at least one of said network nodes is coupled to at least three of said transmission segments.
Dependencies are inferred from the claim text.