Demonstration of multi-user laser communication using orbital-angular- momentum channels

Jaime A. Anguita, Camilo Quezada, Joaquín Herreros

Research output: Contribution to conferencePaper

3 Scopus citations

Abstract

We demonstrate the communication of three coaxial laser channels using single transmit and receive apertures based on a set of distinct orbital-angular-momentum (OAM)-carrying modes. Each channel is individually modulated using OOK at 40 Mb/s and made incident onto an arrangement of spatial-light modulators (SLMs) that impose OAM. The three generated modes are combined before the transmit aperture. The received beam with superimposed OAM modes is filtered using SLMs to separate the channels, which are subsequently photo-detected. The effects of OAM crosstalk among channels and the selection of OAM modes are analyzed.
Original languageAmerican English
DOIs
StatePublished - 1 Dec 2012
EventProceedings of SPIE - The International Society for Optical Engineering -
Duration: 1 Jan 2019 → …

Conference

ConferenceProceedings of SPIE - The International Society for Optical Engineering
Period1/01/19 → …

Keywords

  • Channel crosstalk
  • Channel multiplexing
  • Free-space laser communication
  • Optical vortices
  • Orbital angular momentum

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