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  • CLEO/Europe and EQEC 2009 Conference Digest
  • (Optica Publishing Group, 2009),
  • paper CJ_P27

Numerical simulations of transverse mode coupling in large-mode-area fibre amplifiers

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Abstract

Active fibres have become standard products for light amplification due to high efficiency, good heat dissipation and compactness. Additionally, if single-mode fibres are used, fibre amplifiers offer an excellent beam profile. However, at high output powers large mode area (LMA) fibres must be used in order to reduce the power density within the core and to avoid nonlinearities. Especially, at the limits of highest powers large core diameters are necessary [1] that allow the - typically unwanted - propagation of higher-order transverse modes (HOMs). It is of importance to characterize HOMs and to understand the interactions between these modes, as they are sometimes unavoidable.

© 2009 IEEE

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