Tunable wavelength converter using cross-gain modulation in fiber optical parametric amplifier

We have demonstrated a novel wavelength conversion scheme based on XGM in fiber OPA. The scheme enables the tunable wavelength conversion with a simple configuration, and it is free from linewidth broadening caused by the phase modulation of OPA pump. The signal at 1554 nm was converted anywhere into a 13 nm wavelength range, in either the C band (1548-1556 nm) or the L band (1574-1580 nm), with high extinction ratio and high signal to noise ratio.