Contribution to the Improvement of the Correlation Filter Method for Modal Analysis with a Spatial Light Modulator
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INVESTIGACIONMetadata
Title
Contribution to the Improvement of the Correlation Filter Method for Modal Analysis with a Spatial Light ModulatorAuthor (s)
Date
2022Publisher
MDPIBibliographic citation
Benedicto, D.; Collados, M.V.; Martín, J.C.; Atencia, J.; Mendoza-Yero, O.; Vallés, J.A. Contribution to the Improvement of the Correlation Filter Method for Modal Analysis with a Spatial Light Modulator. Micromachines 2022, 13, 2004. https://doi.org/10.3390/mi13112004Type
info:eu-repo/semantics/articlePublisher version
https://www.mdpi.com/2072-666X/13/11/2004Version
info:eu-repo/semantics/publishedVersionSubject
Abstract
Modal 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 ... [+]
Modal 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. [-]
Is part of
Micromachines 2022, 13(11), 2004.Funder Name
Ministerio de Ciencia e Innovación | Gobierno de Aragón | Agencia Estatal de Investigación
Project code
PID2019−108598GB-I00/AEI/10.13039/501100011033 | E44-20R | PID2019-110927RB-I00
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