Observation of Eisenbud-Wigner-Smith states as principal modes in multimode fibre

Carpenter, Joel, Eggleton, Benjamin J. and Schroder, Jochen (2015) Observation of Eisenbud-Wigner-Smith states as principal modes in multimode fibre. Nature Photonics, 9 11: 751-757. doi:10.1038/nphoton.2015.188

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Author Carpenter, Joel
Eggleton, Benjamin J.
Schroder, Jochen
Title Observation of Eisenbud-Wigner-Smith states as principal modes in multimode fibre
Journal name Nature Photonics   Check publisher's open access policy
ISSN 1749-4893
Publication date 2015-10-29
Sub-type Article (original research)
DOI 10.1038/nphoton.2015.188
Open Access Status Not yet assessed
Volume 9
Issue 11
Start page 751
End page 757
Total pages 7
Place of publication London, United Kingdom
Publisher Nature Publishing Group
Language eng
Subject 2504 Electronic, Optical and Magnetic Materials
3107 Atomic and Molecular Physics, and Optics
Abstract Generally, light becomes scattered in space and time as it is coupled among multiple spatial paths during propagation through disordered media or multimode waveguides. This limits the pulse duration and spatial coherence that can be obtained after light exits such a medium. Eisenbud–Wigner–Smith eigenstates, originally proposed in nuclear scattering, are a unique set of input/output states that, despite spatiotemporal scattering during propagation, arrive at the output temporally unscattered. In fibre optics, these states manifest as principal modes that allow pulses and spatial coherence to be maintained despite propagation through a medium that would otherwise have destroyed these properties. These states generalize the phenomena of orthogonal fast/slow axes in a birefringent object to a basis with N axes, where N is the total number of spatial/polarization modes in the scattering medium. We experimentally demonstrate the existence of principal modes using a 100 m length of multimode fibre as the propagation medium.
Keyword Light Disordered media
Multi-mode waveguides
Nuclear scattering
Pulse durations
Scattering medium
Space and time
Spatial coherence
Spatial paths
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Information Technology and Electrical Engineering Publications
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