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Article: Analysis of Electromagnetic Vortex Beams Using Modified Dynamic Mode Decomposition in Spatial Angular Domain

TitleAnalysis of Electromagnetic Vortex Beams Using Modified Dynamic Mode Decomposition in Spatial Angular Domain
Authors
Issue Date2019
PublisherOptical Society of America: Open Access Journals. The Journal's web site is located at http://www.opticsexpress.org
Citation
Optics Express, 2019, v. 27 n. 20, p. 27702-27711 How to Cite?
AbstractThe orbital angular momentum (OAM) modes of electromagnetic (EM) beams are utilized for multiplexing in communication systems, where each OAM mode is encoded with data. The OAM index, or the so-called topological charge, identifies each OAM mode. Recently, the amplitude of OAM mode has also been used as another modulation format. Therefore, accurate extraction of not only the OAM index but also the corresponding amplitude is required. In this paper, a modified dynamic mode decomposition (DMD) algorithm is proposed to analyze the OAM modes. We show that accurate topological charges and high-resolution amplitude patterns of both single OAM mode and composite OAM modes can be obtained. This work offers an effective approach for demultiplexing OAM-carrying beams, especially when the high-resolution amplitude information is needed.
Persistent Identifierhttp://hdl.handle.net/10722/279392
ISSN
2019 Impact Factor: 3.669
2015 SCImago Journal Rankings: 2.186
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhang, Y-
dc.contributor.authorChen, M-
dc.contributor.authorJiang, L-
dc.date.accessioned2019-11-01T07:16:27Z-
dc.date.available2019-11-01T07:16:27Z-
dc.date.issued2019-
dc.identifier.citationOptics Express, 2019, v. 27 n. 20, p. 27702-27711-
dc.identifier.issn1094-4087-
dc.identifier.urihttp://hdl.handle.net/10722/279392-
dc.description.abstractThe orbital angular momentum (OAM) modes of electromagnetic (EM) beams are utilized for multiplexing in communication systems, where each OAM mode is encoded with data. The OAM index, or the so-called topological charge, identifies each OAM mode. Recently, the amplitude of OAM mode has also been used as another modulation format. Therefore, accurate extraction of not only the OAM index but also the corresponding amplitude is required. In this paper, a modified dynamic mode decomposition (DMD) algorithm is proposed to analyze the OAM modes. We show that accurate topological charges and high-resolution amplitude patterns of both single OAM mode and composite OAM modes can be obtained. This work offers an effective approach for demultiplexing OAM-carrying beams, especially when the high-resolution amplitude information is needed.-
dc.languageeng-
dc.publisherOptical Society of America: Open Access Journals. The Journal's web site is located at http://www.opticsexpress.org-
dc.relation.ispartofOptics Express-
dc.rightsOptics Express. Copyright © Optical Society of America: Open Access Journals.-
dc.rights© XXXX [year] Optical Society of America]. Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved.-
dc.titleAnalysis of Electromagnetic Vortex Beams Using Modified Dynamic Mode Decomposition in Spatial Angular Domain-
dc.typeArticle-
dc.identifier.emailChen, M: menglin@connect.hku.hk-
dc.identifier.emailJiang, L: jianglj@hku.hk-
dc.identifier.authorityJiang, L=rp01338-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1364/OE.27.027702-
dc.identifier.pmid31684533-
dc.identifier.scopuseid_2-s2.0-85072731274-
dc.identifier.hkuros308528-
dc.identifier.volume27-
dc.identifier.issue20-
dc.identifier.spage27702-
dc.identifier.epage27711-
dc.identifier.isiWOS:000488282800048-
dc.publisher.placeUnited States-

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