Intensity-only-measurement mode decomposition in few-mode fibers

Egor Manuylovich; Aleksandr Donodin; Sergei Turitsyn

doi:10.1364/OE.437907

Intensity-only-measurement mode decomposition in few-mode fibers

Egor Manuylovich, Aleksandr Donodin, Sergei Turitsyn

Research output: Contribution to journal › Article › peer-review

Abstract

Recovery of optical phases using direct intensity detection methods is an ill-posed problem and some prior information is required to regularize it. In the case of multi-mode fibers, the known structure of eigenmodes is used to recover optical field and find mode decomposition by measuring intensity distribution. Here we demonstrate numerically and experimentally a mode decomposition technique that outperforms the fastest previously published method in terms of the number of modes while showing the same decomposition speed. This technique improves signal-to-noise ratio by 10 dB for a 3-mode fiber and by 7.5 dB for a 5-mode fiber.

Original language	English
Pages (from-to)	36769-36783
Number of pages	15
Journal	Optics Express
Volume	29
Issue number	22
Early online date	22 Oct 2021
DOIs	https://doi.org/10.1364/OE.437907
Publication status	Published - 25 Oct 2021

Bibliographical note

Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.

Funding: Horizon 2020 Framework Programme (814276); Engineering and Physical Sciences Research Council (EP/R035342/1).

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10.1364/OE.437907Licence: CC BY 3.0

Intensity-only-measurement mode decomposition in few-mode fibers
Published by The Optical Society under the terms of the Creative Commons Attribution 4.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Final published version, 6.42 MBLicence: CC BY 3.0

Cite this

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AB - Recovery of optical phases using direct intensity detection methods is an ill-posed problem and some prior information is required to regularize it. In the case of multi-mode fibers, the known structure of eigenmodes is used to recover optical field and find mode decomposition by measuring intensity distribution. Here we demonstrate numerically and experimentally a mode decomposition technique that outperforms the fastest previously published method in terms of the number of modes while showing the same decomposition speed. This technique improves signal-to-noise ratio by 10 dB for a 3-mode fiber and by 7.5 dB for a 5-mode fiber.

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Intensity-only-measurement mode decomposition in few-mode fibers

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