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Modeling gain in Er3+/Yb3+ co-doped integrated dual-core waveguides

AuthorsBenedicto, David; Dias, A.; Vallés, J. A.; Martín, Juan C.; Solís Céspedes, Javier
Issue Date10-May-2019
Citation27th International Workshop on Optical Wave and Waveguide Theory and Numerical Modelling (2019)
AbstractModeling gain in Er3+/Yb3+ co-doped integrated dual-core waveguides David Benedicto1, Antonio Días2, Juan A. Vallés1,3*, Juan C. Martín1,3, Javier Solís2. 1 University of Zaragoza, Applied Physics Department, Science Faculty, Zaragoza, Spain 2 Laser Processing Group, Institute of Optics, IO-CSIC, Madrid, Spain 3 Aragon Institute of Engineering Research, Zaragoza, Spain * juanval@unizar.es Integrated dual-core waveguides have been fabricated in Er3+/Yb3+ co-doped phosphate glasses by femtosecond laser writing. A good agreement between numerical results and experimental measurements of the gain enhancement for different core-to-core separation has been achieved. Irradiation of phosphate glasses with femtosecond laser pulses allows the inscription of 3D integrated waveguides with high refractive index contrast by ion migration mechanisms [1]. Due to the increasing interest on multi-core fibers (MCF) in recent years, active integrated multi-core structures (IMCSs) have been fabricated, measured and simulated. For the calculations the power propagation equations of the supermodes coupled to the rate equations of the involved active ions were used. Previously, we experimentally determined the necessary characteristic parameters and the supermodes of the integrated dual-core fabricated structure have been characterized and modeled. Significant differences between IMCS and MCF have been taken into account [2]. The accordance between numerical and experimental results is shown in the figure. Gain enhancement as a function of core-to-core separation with 976-nm bidirectional pump. References [1] T. T. Fernandez, M. Sakakura, S. M. Eaton, B. Sotillo, J. Siegel, J. Solis, Y. Shimotsuma, and K. Miura, >Bespoke photonic devices using ultrafast laser driven ion migration in glasses,> Progress in Materials Science 94, 68-113 (2018). [2] D. Benedicto and J. A. Vallés. >Modeling multicore integrated waveguides in highly doped glass.> Third International Conference on Applications of Optics and Photonics. Vol. 10453. International Society for Optics and Photonics, 2017.
Description27th OWTNM, Málaga 10 de mayo de 2019
Appears in Collections:(CFMAC-IO) Comunicaciones congresos
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