Optical information transmission through complex scattering media with optical-channel-based intensity streaming

Haowen Ruan (), Jian Xu () and Changhuei Yang ()
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Haowen Ruan: California Institute of Technology
Jian Xu: California Institute of Technology
Changhuei Yang: California Institute of Technology

Nature Communications, 2021, vol. 12, issue 1, 1-10

Abstract: Abstract For the past decade, optical wavefront shaping has been the standard technique to control light through scattering media. Implicit in this dominance is the assumption that manipulating optical interference is a necessity for optical control through scattering media. In this paper, we challenge this assumption by reporting on an alternate approach for light control through a disordered scattering medium – optical-channel-based intensity streaming (OCIS). Instead of actively tuning the interference between the optical paths via wavefront shaping, OCIS controls light and transmits information through scattering media through linear intensity operations. We demonstrate a set of OCIS experiments that connect to some wavefront shaping implementations, i.e. iterative wavefront optimization, digital optical phase conjugation, image transmission through transmission matrix, and direct imaging through scattering media. We experimentally created focus patterns through scattering media on a sub-millisecond timescale. We also demonstrate that OCIS enables a scattering medium mediated secure optical communication application.

Date: 2021
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DOI: 10.1038/s41467-021-22692-1

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