Widely Tunable Wavelength Exchange in Anomalous-Dispersion Regime

We demonstrate the 10-Gb/s wavelength exchange with two pumps in the anomalous-dispersion region. Results show that performance degradation caused by Raman gain is avoided so that a nearly complete exchange can be achieved. In this letter, we also investigate the tunability of wavelength exchange for the first time to the best of our knowledge. Complete wavelength exchange is achieved with tuning range >15 nm. A bit-error rate of < 10
^-9
is maintained with power penalties of ~2 dB using 2r - 1 pseudorandom bit sequence (PRBS).