165846 20260116150735.0 doi 10.1109/JLT.2021.3082620 sideral 126223 ART-2021-126223 eng Benedicto D. Universidad de Zaragoza (orcid)0000-0002-3867-2182 Characterization of Multicore Integrated Active Waveguides Written in an Er3+/Yb3+Codoped Phosphate Glass 2021 Access copy available to the general public Unrestricted A new methodology to completely characterize active multicore waveguides is proposed. The method is applied to two-core waveguides written in an Er3+/Yb3+ co-doped phosphate glass by femtosecond laser inscription. Determination of the core diameter and refractive index variation is based on asymmetric excitation of the dual core waveguide and measurements of the intensity output distribution. Moreover, a single core waveguide has also been written for characterization purposes and signal enhancement measurements carried out on it have allowed the determination of the glass active properties. Finally, enhancement measurements on the two-core waveguides for different pump powers and core-to-core separations have been performed, together with simulations of the experiments using the parameters determined in the characterization procedure. The good agreement between measurements and simulations supports the validity of the characterization method presented. The proposed characterization technique is suitable for any multicore symmetric structure regardless the fabrication method and the number of cores, allowing the benefits of multi-core fibre designs to be transferred to integrated active structures. info:eu-repo/grantAgreement/ES/DGA-FEDER/E44-20R info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2019-108598GB-I00/AEI/10.13039/501100011033 info:eu-repo/grantAgreement/ES/MICINN-FEDER/UDiSON-TEC2017-82464-R info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 4.439 2021 OPTICS 24 / 100 = 0.24 2021 Q1 T1 TELECOMMUNICATIONS 31 / 92 = 0.337 2021 Q2 T2 ENGINEERING, ELECTRICAL & ELECTRONIC 79 / 274 = 0.288 2021 Q2 T1 1.434 2021 Atomic and Molecular Physics, and Optics 2021 Q1 9.2 2021 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion DIas A. Martin J. Universidad de Zaragoza (orcid)0000-0002-8738-753X Valles J.-A. Universidad de Zaragoza (orcid)0000-0001-8431-0003 Solis J. 2002 247 Universidad de Zaragoza Dpto. Física Aplicada Área Electromagnetismo 2002 647 Universidad de Zaragoza Dpto. Física Aplicada Área Óptica 39, 15 (2021), 5061-5068 J. lightwave technol. Journal of Lightwave Technology 0733-8724 606380 http://zaguan.unizar.es/record/165846/files/texto_completo.pdf Postprint 3346065 http://zaguan.unizar.es/record/165846/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:165846 articulos driver 2026-01-16-15:06:09 ARTICLE