165851 20260116150736.0 doi 10.1109/JLT.2022.3185904 sideral 130159 ART-2022-130159 eng Benedicto, David Universidad de Zaragoza (orcid)0000-0002-3867-2182 Characterization of asymmetrically Fed Er3+/Yb3+ Co-Doped double core integrated waveguides 2022 Access copy available to the general public Unrestricted The output signal intensity distribution of several fs-laser written double-core active waveguides was registered. The ratio between cores output powers exhibited a strong dependence on the input pump power when both input pump and signal powers were directly coupled to one of the cores. A model based on the coupled-mode theory which incorporates non-identical cores and longitudinally variable signal gain coefficients was implemented. Simulations based on this model are compared to experiments. A good agreement is achievable if small differences between cores’ parameters (within the manufacturing precision limits) are allowed. IEEE info:eu-repo/grantAgreement/ES/DGA/E44-20R info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2019-108598GB-I00/AEI/10.13039/501100011033 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 4.7 2022 OPTICS 22 / 99 = 0.222 2022 Q1 T1 TELECOMMUNICATIONS 29 / 88 = 0.33 2022 Q2 T1 ENGINEERING, ELECTRICAL & ELECTRONIC 76 / 274 = 0.277 2022 Q2 T1 1.514 2022 Atomic and Molecular Physics, and Optics 2022 Q1 9.5 2022 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Valles, Juan A. Universidad de Zaragoza (orcid)0000-0001-8431-0003 Martin, Juan C. Universidad de Zaragoza (orcid)0000-0002-8738-753X 2002 247 Universidad de Zaragoza Dpto. Física Aplicada Área Electromagnetismo 2002 647 Universidad de Zaragoza Dpto. Física Aplicada Área Óptica 40, 17 (2022), 5910-5916 J. lightwave technol. Journal of Lightwave Technology 0733-8724 1064710 http://zaguan.unizar.es/record/165851/files/texto_completo.pdf Postprint 694707 http://zaguan.unizar.es/record/165851/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:165851 articulos driver 2026-01-16-15:06:12 ARTICLE