Laming, R.I., Minelly, J.D., Dong, L. and Zervas, M.N.
Twincore erbium-doped fibre amplifier with passive spectral gain equalisation
Electronics Letters, 29, (6), . (doi:10.1049/el:19930340).
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Automatic spectral gain equalisation is demonstrated using controlled spatial hole-burning in an erbium doped twincore fibre. Gain equalisation rates up to 0.11dB difference between input signal levels are demonstrated and should increase the useful bandwidth of cascaded amplifiers.
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