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Autor: ERNESTO JIMENEZ VILLAR ×

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    Artigo IPEN-doc 24972
    Influence of silicon nanocrystals on the performance of Yb3+/Er3+: Bi2O3-GeO2 pedestal waveguides for amplification at 1542 nm
    2018 - SILVA, DIEGO S. da; ALAYO, MARCOS I.; KASSAB, LUCIANA R.P.; ASSUMPCAO, THIAGO A.A. de; WETTER, NIKLAUS U.; JIMENEZ-VILLAR, ERNESTO
    This paper reports for, the first time, the influence of silicon nanocrystals on the photoluminescence and optical gain of Yb3+/Er3+ codoped Bi2O3–GeO2 waveguides for amplification at 1542 nm. Pedestal waveguides were fabricated by RF- sputtering followed by optical lithography and reactive ion etching. RF-sputtering followed by heat treatment produced silicon nanocrystals with average size of 8 nm and resulted in a photoluminescence enhancement of about 10 times for the 520 nm and 1530 nm emission bands. The resulting internal gain was 5.5 dB/cm at 1542 nm, which represents and enhancement of ~50%, demonstrating potential for applications in integrated optics.