Long-range spatio-temporal correlations in multimode fibers for pulse delivery

Wen Xiong, Chia Wei Hsu and Hui Cao ()
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Wen Xiong: Yale University
Chia Wei Hsu: Yale University
Hui Cao: Yale University

Nature Communications, 2019, vol. 10, issue 1, 1-7

Abstract: Abstract Long-range correlations play an essential role in wave transport through disordered media, but have rarely been studied in other complex systems. Here we discover spatio-temporal intensity correlations for an optical pulse propagating through a multimode fiber with strong random mode coupling. Positive long-range correlation arises from multiple scattering in fiber mode space and depends on the statistical distribution of arrival times. By optimizing the incident wavefront of a pulse, we maximize the power transmitted at a selected time, and such control is significantly enhanced by the long-range spatio-temporal correlation. We provide an explicit relation between the correlation and the power enhancement, which agrees with experimental results. Our work shows that multimode fibers provide a fertile ground for studying complex wave phenomena. The strong spatio-temporal correlation can be employed for efficient power delivery at a well-defined time.

Date: 2019
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DOI: 10.1038/s41467-019-10916-4

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