doi:10.3390/mi13112004engBenedicto, DavidCollados, María VictoriaMartín, Juan C.Atencia, JesúsMendoza-Yero, OmelVallés, Juan A.Contribution to the Improvement of the Correlation Filter Method for Modal Analysis with a Spatial Light ModulatorART-2022-131082Modal decomposition of light is essential to study its propagation properties in waveguides and photonic devices. Modal analysis can be carried out by implementing a computer-generated hologram acting as a match filter in a spatial light modulator. In this work, a series of aspects to be taken into account in order to get the most out of this method are presented, aiming to provide useful operational procedures. First of all, a method for filter size adjustment based on the standard fiber LP-mode symmetry is presented. The influence of the mode normalization in the complex amplitude encoding-inherent noise is then investigated. Finally, a robust method to measure the phase difference between modes is proposed. These procedures are tested by wavefront reconstruction in a conventional few-mode fiber.2022http://zaguan.unizar.es/record/12016710.3390/mi13112004http://zaguan.unizar.es/record/120167oai:zaguan.unizar.es:120167info:eu-repo/grantAgreement/ES/DGA-FEDER/Construyendo Europa desde Aragóninfo:eu-repo/grantAgreement/ES/DGA-FEDER/E44-20Rinfo:eu-repo/grantAgreement/ES/MICINN-AEI/PID2019-108598GB-I00/AEI/10.13039/501100011033info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2019-110927RB-I00/AEI/10.13039/501100011033Micromachines 13, 11 (2022), 2004 [14 pp.]byhttp://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccess