Performance characterisation of ultra-wideband Raman amplifiers

We experimentally characterise the performance of two different 150nm (1470–1620nm), ∼14dB gain Raman amplifiers consisting of hybrid distributed-discrete and discrete-discrete configurations. The hybrid scheme improves S-band OSNR and Q
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-factor of 120Gb/s PM-QPSK signals after 63km transmission by <4dB and 1dB respectively compared to discrete-only design.