All-optical phase and amplitude regenerator for next-generation telecommunications systems
Fibre-optic communications systems have traditionally carried data using binary (on−off) encoding of the light amplitude. However, next-generation systems will use both the amplitude and phase of the optical carrier to achieve higher spectral efficiencies and thus higher overall data capacities 1 ,...
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Published in | Nature photonics Vol. 4; no. 10; pp. 690 - 695 |
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Main Authors | , , , , , , , , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
London
Nature Publishing Group UK
01.10.2010
Nature Publishing Group |
Subjects | |
Online Access | Get full text |
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Summary: | Fibre-optic communications systems have traditionally carried data using binary (on−off) encoding of the light amplitude. However, next-generation systems will use both the amplitude and phase of the optical carrier to achieve higher spectral efficiencies and thus higher overall data capacities
1
,
2
. Although this approach requires highly complex transmitters and receivers, the increased capacity and many further practical benefits that accrue from a full knowledge of the amplitude and phase of the optical field
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more than outweigh this additional hardware complexity and can greatly simplify optical network design. However, use of the complex optical field gives rise to a new dominant limitation to system performance—nonlinear phase noise
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,
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. Developing a device to remove this noise is therefore of great technical importance. Here, we report the development of the first practical (‘black-box’) all-optical regenerator capable of removing both phase and amplitude noise from binary phase-encoded optical communications signals.
Devices that can reduce noise in fibre-optic communications systems are of great technical importance. Scientists have now developed a practical all-optical regenerator that is capable of directly removing not only amplitude noise but also phase noise from binary phase-encoded optical communications signals. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 |
ISSN: | 1749-4885 1749-4893 1749-4893 |
DOI: | 10.1038/nphoton.2010.203 |