Contribution to the Improvement of the Correlation Filter Method for Modal Analysis with a Spatial Light Modulator

Benedicto, David (Universidad de Zaragoza) ; Collados, María Victoria (Universidad de Zaragoza) ; Martín, Juan C. (Universidad de Zaragoza) ; Atencia, Jesús (Universidad de Zaragoza) ; Mendoza-Yero, Omel ; Vallés, Juan A. (Universidad de Zaragoza)

Resumen: 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.

Idioma: Inglés

DOI: 10.3390/mi13112004

Año: 2022

Publicado en: Micromachines 13, 11 (2022), 2004 [14 pp.]
ISSN: 2072-666X

Factor impacto JCR: 3.4 (2022)

Categ. JCR: CHEMISTRY, ANALYTICAL rank: 29 / 86 = 0.337 (2022) - Q2 - T2
Categ. JCR: INSTRUMENTS & INSTRUMENTATION rank: 25 / 63 = 0.397 (2022) - Q2 - T2
Categ. JCR: PHYSICS, APPLIED rank: 57 / 160 = 0.356 (2022) - Q2 - T2
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 68 / 107 = 0.636 (2022) - Q3 - T2

Factor impacto CITESCORE: 4.7 - Engineering (Q2)

Factor impacto SCIMAGO: 0.546 - Control and Systems Engineering (Q2) - Mechanical Engineering (Q2) - Electrical and Electronic Engineering (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA-FEDER/Construyendo Europa desde Aragón
Financiación: info:eu-repo/grantAgreement/ES/DGA-FEDER/E44-20R
Financiación: info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2019-108598GB-I00/AEI/10.13039/501100011033
Financiación: info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2019-110927RB-I00/AEI/10.13039/501100011033

Tipo y forma: Article (Published version)

Área (Departamento): Área Física Aplicada (Dpto. Física Aplicada)
Área (Departamento): Área Electromagnetismo (Dpto. Física Aplicada)
Área (Departamento): Área Óptica (Dpto. Física Aplicada)