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Holographic toolkit for optical communication beyond orbital angular momentum

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dc.contributor.author Rosales-Guzman, C
dc.contributor.author Trichili, A
dc.contributor.author Dudley, Angela L
dc.contributor.author Ndagano, B
dc.contributor.author Salem, AB
dc.contributor.author Zghal, Mourad
dc.contributor.author Forbes, A
dc.date.accessioned 2017-06-07T07:58:40Z
dc.date.available 2017-06-07T07:58:40Z
dc.date.issued 2016-09
dc.identifier.citation Rosales-Guzman, C., Trichili, A., Dudley, A.L. et al. 2016. Holographic toolkit for optical communication beyond orbital angular momentum. Proceedings of SPIE 9950, Laser Beam Shaping XVII, 99500C, 27 September 2016, San Diego, California, United States. p. 99500C-99500C-10. doi: 10.1117/12.2238416 en_US
dc.identifier.uri http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=2564496
dc.identifier.uri doi:10.1117/12.2238416
dc.identifier.uri http://hdl.handle.net/10204/9212
dc.description Copyright 2016 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. en_US
dc.description.abstract Current optical communication technologies are predicted to face a bandwidth capacity limit in the near future. The nature of the limitation is fundamental rather than technological and is set by nonlinearities in optical fibers. One solution, suggested over 30 years ago, comprises the use of spatial modes of light as information carriers. Along this direction, light beams endowed with orbital angular momentum (OAM) have been demonstrated as potential information carriers in both, free space and fibres. However, recent studies suggest that purely OAM modes does not increase the bandwidth of optical communication systems. In fact, in all work to date, only the azimuthal component of transverse spatial modes has been used. Crucially, all transverse spatial modes require two degrees of freedom to be described; in the context of Laguerre-Gaussian (LGp`) beams these are azimuthal (l) and radial (p), the former responsible for OAM. Here, we demonstrate a technique where both degrees of freedom of LG modes are used as information carrier over free space. We transfer images encoded using 100 spatial modes in three wavelengths as our basis, and employ a spatial demultiplexing scheme that detects all 100 modes simultaneously. Our scheme is a hybrid of MIMO and SMM, and serves as a proof-of-principle demonstration. The cross-talk between the modes is small and independent of whether OAM modes are used or not. en_US
dc.language.iso en en_US
dc.publisher SPIE en_US
dc.relation.ispartofseries Worklist;17688
dc.subject Laguerre-Gaussian modes en_US
dc.subject Optical communications en_US
dc.subject Orbital angular momentum en_US
dc.title Holographic toolkit for optical communication beyond orbital angular momentum en_US
dc.type Conference Presentation en_US
dc.identifier.apacitation Rosales-Guzman, C., Trichili, A., Dudley, A. L., Ndagano, B., Salem, A., Zghal, M., & Forbes, A. (2016). Holographic toolkit for optical communication beyond orbital angular momentum. SPIE. http://hdl.handle.net/10204/9212 en_ZA
dc.identifier.chicagocitation Rosales-Guzman, C, A Trichili, Angela L Dudley, B Ndagano, AB Salem, Mourad Zghal, and A Forbes. "Holographic toolkit for optical communication beyond orbital angular momentum." (2016): http://hdl.handle.net/10204/9212 en_ZA
dc.identifier.vancouvercitation Rosales-Guzman C, Trichili A, Dudley AL, Ndagano B, Salem A, Zghal M, et al, Holographic toolkit for optical communication beyond orbital angular momentum; SPIE; 2016. http://hdl.handle.net/10204/9212 . en_ZA
dc.identifier.ris TY - Conference Presentation AU - Rosales-Guzman, C AU - Trichili, A AU - Dudley, Angela L AU - Ndagano, B AU - Salem, AB AU - Zghal, Mourad AU - Forbes, A AB - Current optical communication technologies are predicted to face a bandwidth capacity limit in the near future. The nature of the limitation is fundamental rather than technological and is set by nonlinearities in optical fibers. One solution, suggested over 30 years ago, comprises the use of spatial modes of light as information carriers. Along this direction, light beams endowed with orbital angular momentum (OAM) have been demonstrated as potential information carriers in both, free space and fibres. However, recent studies suggest that purely OAM modes does not increase the bandwidth of optical communication systems. In fact, in all work to date, only the azimuthal component of transverse spatial modes has been used. Crucially, all transverse spatial modes require two degrees of freedom to be described; in the context of Laguerre-Gaussian (LGp`) beams these are azimuthal (l) and radial (p), the former responsible for OAM. Here, we demonstrate a technique where both degrees of freedom of LG modes are used as information carrier over free space. We transfer images encoded using 100 spatial modes in three wavelengths as our basis, and employ a spatial demultiplexing scheme that detects all 100 modes simultaneously. Our scheme is a hybrid of MIMO and SMM, and serves as a proof-of-principle demonstration. The cross-talk between the modes is small and independent of whether OAM modes are used or not. DA - 2016-09 DB - ResearchSpace DP - CSIR KW - Laguerre-Gaussian modes KW - Optical communications KW - Orbital angular momentum LK - https://researchspace.csir.co.za PY - 2016 T1 - Holographic toolkit for optical communication beyond orbital angular momentum TI - Holographic toolkit for optical communication beyond orbital angular momentum UR - http://hdl.handle.net/10204/9212 ER - en_ZA


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