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Er3+/Yb3+ doped active optic Y splitter realized by diffusion waveguides with Ag+—Na+ ion exchange

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Abstract

We reported on the active channel waveguides, formed in novel types of silicate glasses, doped with rare-earth elements, and Zn were investigated. The silicate glass GZ4 with Er3+ and Yb3+ content was studied, and the best doping ratio was estimated about luminescent properties. The composition of the glass samples (GZ4) with the content of 0.25 mol.% Er2O3 and 5.0 mol.% Yb2O3 and 12.0 mol.% resp. 18.0 mol.% ZnO was optimized. This glass was evaluated as the most suitable material for integrated amplifiers in the 1 530–1 565 nm telecommunication band. Other samples were prepared with active channel waveguides and active planar optical power splitter Y with a splitting ratio of 1 × 2 by two-step ion-exchange Na+ ↔ Ag+. Diffusion profiles of the created samples were analyzed by the EMA microscope and compared with the near mode-field distribution measurement results. Afterward, the amplification properties of the designed structures were studied, and the differential gain from 1.2 to 1.6 dB (0.48 to 0.64 dB/cm) was achieved by pumping power 200 mW at 980 nm.

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Acknowledgements

This work was supported in part by the Student Grant Competition of the Czech Technical University in Prague under the grant number of SGS20/175/OHK3/3T/13 and Centre of Advanced Applied Natural Sciences", Reg. No. CZ.02.1.01/0.0/0.0/16_019/0000778, supported by the Operational Program Research, Development and Education, co-financed by the European Structural and Investment Funds and the state budget of the Czech Republic. Part of this work was also supported by University of Chemistry and Technology in Prague (Project No. MSMT No 21-SVV/2021).

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Authors and Affiliations

  1. Department of Microelectronics, Faculty of Electrical Engineering, Czech Technical University in Prague, Technická 2, 166 27, Prague, Czech Republic

    J. Šmejcký, D. Mareš, O. Barkman, V. Prajzler & V. Jeřábek

  2. Department of Inorganic Chemistry, Faculty of Chemical Technology, University of Chemistry and Technology, Technická 5, Prague, 166 28, Czech Republic

    P. Nekvindová

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  1. J. Šmejcký
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  2. D. Mareš
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  3. O. Barkman
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  4. P. Nekvindová
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  5. V. Prajzler
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  6. V. Jeřábek
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Correspondence to V. Jeřábek.

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Šmejcký, J., Mareš, D., Barkman, O. et al. Er3+/Yb3+ doped active optic Y splitter realized by diffusion waveguides with Ag+—Na+ ion exchange. Opt Quant Electron 53, 440 (2021). https://doi.org/10.1007/s11082-021-03035-2

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