Fabrication of Yb3+/Er3+ codoped Bi2O3–WO3–TeO2 pedestal type waveguide for optical amplifiers |
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| Affiliation: | 1. Departamento de Engenharia de Sistemas Eletrônicos, Escola Politécnica da USP, São Paulo, SP, Brazil;2. Laboratório de Tecnologia em Materiais Fotônicos e Optoeletrônicos, Faculdade de Tecnologia de São Paulo (FATEC-SP), CEETEPS/UNESP, São Paulo, SP, Brazil;1. Biological Research Centre of the Hungarian Academy of Sciences, Temesvári krt. 62, Szeged 6726, Hungary;2. University of Szeged, Department of Mineralogy, Geochemistry and Petrology, Egyetem Street 2, Szeged 6722, Hungary;1. Lviv Polytechnic National University, 12 Bandera Str., 79013 Lviv, Ukraine;2. Physics Faculty of Opole University of Technology, 75 Ozimska Str., 45370 Opole, Poland;3. Vlokh Institute of Physical Optics, 23 Dragomanov Str., 79005 Lviv, Ukraine;4. Institute of Physics of Jan Dlugosz University, 13/15 al. Armii Krajowej, 42201 Czestochowa, Poland;5. Ivan Franko National University of Lviv, Department of Electronics, 107 Tarnavskogo Str., 79017 Lviv, Ukraine;1. College of Chemistry, Jilin University, Changchun 130012, PR China;2. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, PR China;1. Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, 3 Krzhyzhanivsky Street, Kyiv 03142, Ukraine;2. Department of Physics, Eastern European National University, 13 Voli Avenue, Lutsk 43025, Ukraine;3. Department of Inorganic and Physical Chemistry, Eastern European National University, 13 Voli Avenue, Lutsk 43025, Ukraine |
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| Abstract: | We report, for the first time to our knowledge, experimental results on pedestal waveguides produced with Yb3+/Er3+ codoped Bi2O3–WO3–TeO2 thin films deposited by RF Sputtering for photonic applications. Thin films were deposited using Ar/O2 plasma at 5 mTorr pressure and RF power of 40 W on substrates of silicon wafers. The definition of the pedestal waveguide structure was made using conventional optical lithography followed by plasma etching. Propagation losses around 2.0 dB/cm and 2.5 dB/cm were obtained at 633 and 1050 nm, respectively, for waveguides in the 20–100 μm width range. Single-mode propagation was measured for waveguides width up to 10 μm and 12 μm, at 633 nm and 1050 nm, respectively; for larger waveguides widths multi-mode propagation was obtained. Internal gain of 5.6 dB at 1530 nm, under 980 nm excitation, was measured for 1.5 cm waveguide length (∼3.7 dB/cm). The present results show the possibility of using Yb3+/Er3+ codoped Bi2O3–WO3–TeO2 pedestal waveguide for optical amplifiers. |
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| Keywords: | Pedestal waveguides Tellurite glasses Optical amplification RF Sputtering Thin films Optical gain |
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