Coherent Intradyne Opto-Electro-Optic Spectral Inverter and its Application for SPM Mitigation and Wavelength Conversion

We report on a new joint coherent intradyne o/e/o spectral inverter and wavelength converter applied for midspan spectral inversion (MSI). MSI leads to an increase in nonlinear threshold for 16QAM 200 Gb/s signals of 2.4 and 1.6 dB in single channel and DWDM experiment, respectively, and is used to double the transmission distance.