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Optimum design of erbium-ytterbium codoped fibres for large-signal, high-pump-power applications

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Czechoslovak Journal of Physics Aims and scope

Abstract

A comprehensive numerical fibre amplifier model has been used to optimise erbiumytterbium codoped active fibre for maximum gain and quantum conversion efficiency at large signal operation. The optimum cut-off wavelength of the LP11 mode has been found to increase from 800 nm at low pump powers (≈ 50 mW) to 1400 nm at pump powers higher than 500 mW. While at low pump powers fibres with higher numerical aperture give higher quantum conversion efficiency, at high pump levels better large signal performance is achieved with fibres having lower numerical aperture.

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  1. Institute of Radio Engineering and Electronics, Acad. Sci. CR, Chaberska 57, 182 51, Praha 8, Czech Republic

    M. Karásek

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  1. M. Karásek
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Karásek, M. Optimum design of erbium-ytterbium codoped fibres for large-signal, high-pump-power applications. Czech J Phys 49, 895–907 (1999). https://doi.org/10.1023/A:1021265913452

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  • DOI: https://doi.org/10.1023/A:1021265913452

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