Abstract
We propose a modulation-format-independent tunable wavelength convertor that has a PPLN- based polarization-diversity loop configuration with two dual-stage SFG-DFG processes. After confirmation of error-free operation for polarization-scrambled 12.5-Gbit/s OOK signals, wavelength conversion of 100-Gbit/s PDM-PS-64QAM signals with arbitrary input and output wavelengths was successfully demonstrated in the C-band.
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