Dual-Polarization C+L-Band Wavelength Conversion in a Twin-Core Highly Nonlinear Fibre

All-optical wavelength conversion of dual-polarization signals over 9.6 nm in C+L-band is demonstrated in a twin-core highly nonlinear fibre for the first time. Conversion efficiencies between -1 dB and -8.5 dB for both cores are obtained simultaneously.