Zervas, M.N., Laming, R.I., Townsend, J.E., Tarbox, E.J. and Payne, D.N.
Design and fabrication of high gain-efficiency erbium-doped fibre amplifiers
IEEE Photonics Technology Letters, 4, (12), . (doi:10.1109/68.180570).
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The gain efficiency of a fully optimised EDFA is calculated as a function of the fibre NA and dopant confinement in the core and is shown to agree well with experimental data. A gain efficiency of 8.9dB/mW is demonstrated which is the best reported value to date for MCVD fibres. In addition, the detrimental effect of pump and signal background losses on the optimum gain efficiency is considered in detail.
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