De-multiplexing vortex modes in optical communications using transport-based pattern recognition

Optics Express
Se Rim ParkGustavo K Rohde

Abstract

Free space optical communications utilizing orbital angular momentum beams have recently emerged as a new technique for communications with potential for increased channel capacity. Turbulence due to changes in the index of refraction emanating from temperature, humidity, and air flow patterns, however, add nonlinear effects to the received patterns, thus making the demultiplexing task more difficult. Deep learning techniques have been previously been applied to solve the demultiplexing problem as an image classification task. Here we make use of a newly developed theory suggesting a link between image turbulence and photon transport through the continuity equation to describe a method that utilizes a "shallow" learning method instead. The decoding technique is tested and compared against previous approaches using deep convolutional neural networks. Results show that the new method can obtain similar classification accuracies (bit error ratio) at a small fraction (1/90) of the computational cost, thus enabling higher bit rates.

References

Jul 5, 2002·Physical Review Letters·Jonathan LeachJohannes Courtial
Nov 1, 2004·Optics Express·Graham GibsonSonja Franke-Arnold
Dec 18, 2010·Optics Express·Ivan B Djordjevic, Murat Arabaci
Sep 22, 2011·Optics Express·Peter J Winzer, Gerard J Foschini
Aug 3, 2013·Science·Martin P J LaveryMiles J Padgett
Nov 13, 2013·Nature Communications·Mohammad MirhosseiniRobert W Boyd
Dec 20, 2015·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Soheil KolouriGustavo K Rohde
Apr 22, 2017·Applied Optics·Timothy Doster, Abbie T Watnik
Jul 3, 2018·IEEE Signal Processing Magazine·Soheil KolouriGustavo K Rohde

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Citations

Feb 11, 2020·Cytometry. Part a : the Journal of the International Society for Analytical Cytology·Mohammad Shifat-E-RabbiGustavo K Rohde
Jun 7, 2018·Proceedings of the National Academy of Sciences of the United States of America·Mohammad Sadegh NorouzzadehJeff Clune
May 3, 2019·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Cristian Hernando AcevedoAristide Dogariu
May 14, 2020·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Cristian Hernando AcevedoAristide Dogariu
May 10, 2020·Physical Review Letters·Taira GiordaniFabio Sciarrino
Oct 30, 2020·Optics Express·Zhaokun LiXiaohui Zhao
Apr 7, 2021·Optics Express·Maged A EsmailSaleh A Alshebeili
Apr 7, 2021·Optics Express·Lyubomir StoyanovGerhard G Paulus
Jul 16, 2021·Journal of the Optical Society of America. A, Optics, Image Science, and Vision·Patrick L NearyNicholas S Flann

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