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Double Rayleigh backscattering in long-haul transmission systems employing distributed and lumped fibre amplifiers

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2 Author(s)
Wan, P. ; TRLabs, Edmonton, Alta., Canada ; Conradi, J.

Double Rayleigh backscattering in long-haul transmission systems employing `lumped' and distributed fibre amplifiers has been analysed. We find that, for singlemode fibre employing `lumped' erbium-doped fibre amplifiers (EDFAs) with isolators on both sides of the EDFAs, the degradation is very small: however, for systems using `lumped' praseodymium-doped fluoride fibre amplifiers or distributed EDFAs the power penalties can be large

Published in:

Electronics Letters  (Volume:31 ,  Issue: 5 )