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Efficient pump wavelengths of erbium-doped fibre optical amplifier

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8 Author(s)
Laming, R.I. ; Dept. of Electron. & Comput. Sci., Southampton Univ., UK ; Farries, M.C. ; Morkel, P.R. ; Reekie, L.
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By choosing pump wavelengths at which excited state absorption does not occur, efficient high gain operation of erbium-doped fibre amplifiers is possible. Practical pump wavelengths of 532 nm and 980 nm are identified as optimal, giving gains as high as 1.35 dB/mW and 2.2 dB/mW of pump at the two wavelengths, respectively.

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Electronics Letters  (Volume:25 ,  Issue: 1 )