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

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.

Publication DOI: https://doi.org/10.1364/OE.437907
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
Additional Information: 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).
Uncontrolled Keywords: Atomic and Molecular Physics, and Optics
Publication ISSN: 1094-4087
Last Modified: 14 May 2024 17:28
Date Deposited: 28 Oct 2021 07:16
Full Text Link:
Related URLs: http://10.1364/OE.437907 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2021-10-25
Published Online Date: 2021-10-22
Accepted Date: 2021-10-11
Authors: Manuylovich, Egor (ORCID Profile 0000-0002-5722-0122)
Donodin, Aleksandr (ORCID Profile 0000-0002-5715-1438)
Turitsyn, Sergei (ORCID Profile 0000-0003-0101-3834)

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