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We show the impact of counterphase mismatch of a pump-phase modulation on the residual phase modulation and on the OSNR penalty of a converted signal in a fibre-based dual-pump wavelength converter.
We analyze capacity limitations in long repeater-less transmission experiments. Combination of self-phase-modulation and inter-channel Raman cross-talk limits useable bandwidth, confining ultimate capacity for the examined design to 32 times 10 Gb/s and 8 times 10 Gb/s channels over 486 km and 505 km, respectively.
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