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Speckle-based sequential optimization of adaptive receivers in downlink laser communications
dc.contributor.author | Carrizo, Carlos E. |
dc.contributor.author | Mata Calvo, Ramón |
dc.contributor.author | Belmonte Molina, Aniceto |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions |
dc.date.accessioned | 2019-01-30T11:21:44Z |
dc.date.issued | 2018 |
dc.identifier.citation | Carrizo, C.; Mata, R.; Belmonte, A. Speckle-based sequential optimization of adaptive receivers in downlink laser communications. A: SPIE Environmental Effects on Light Propagation and Adaptive Systems. "Environmental Effects on Light Propagation and Adaptive Systems: 12-13 September 2018, Berlin, Germany". Washington: International Society for Photo-Optical Instrumentation Engineers (SPIE), 2018, p. 107870C. |
dc.identifier.isbn | 978-1-5106-2158-9 |
dc.identifier.uri | http://hdl.handle.net/2117/127862 |
dc.description.abstract | Free-space optical communications (FSOC) are rapidly becoming a key technology for terrestrial, aerial, and space communication, mainly because of its very high throughput capacity. To achieve multi-gigabit laser downstream, an efficient single-mode fiber coupling is required. However, atmospheric turbulence remains one of FSOC’s main limitations. The turbulence affects the communications performance by inducing wavefront distortions that develop into coupled power fluctuations. In regimes of very strong turbulence, the use of traditional adaptive optics systems is limited due to strong scintillation and higher number of phase singularities. These limitations could be solved by relying on systems based on the stochastic iterative maximization of the coupled power. The drawback of such systems is that a high number of iterations are required for signal optimization. We address this problem and propose a different iterative method that compensates the distorted pupil phasefront by operating directly on the focal plane. The technique works by iteratively updating the phases of individual speckles to maximize the received power coupled into a single-mode fiber. We show numerically and experimentally that the method can improve the quality of the received signal with reduced bandwidth utilization. |
dc.language.iso | eng |
dc.publisher | International Society for Photo-Optical Instrumentation Engineers (SPIE) |
dc.subject | Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica |
dc.subject.lcsh | Optical communications |
dc.subject.other | Free-space optical communications |
dc.subject.other | Adaptive optics |
dc.subject.other | Iterative |
dc.subject.other | Speckle |
dc.title | Speckle-based sequential optimization of adaptive receivers in downlink laser communications |
dc.type | Conference report |
dc.subject.lemac | Comunicacions òptiques |
dc.contributor.group | Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció |
dc.identifier.doi | 10.1117/12.2325675 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10787/107870C/Speckle-based-sequential-optimization-of-adaptive-receivers-in-downlink-laser/10.1117/12.2325675.short?SSO=1 |
dc.rights.access | Restricted access - publisher's policy |
local.identifier.drac | 23612264 |
dc.description.version | Postprint (published version) |
dc.date.lift | 10000-01-01 |
local.citation.author | Carrizo, C.; Mata, R.; Belmonte, A. |
local.citation.contributor | SPIE Environmental Effects on Light Propagation and Adaptive Systems |
local.citation.pubplace | Washington |
local.citation.publicationName | Environmental Effects on Light Propagation and Adaptive Systems: 12-13 September 2018, Berlin, Germany |
local.citation.startingPage | 107870C |
local.citation.endingPage | 107870C |