We demonstrate that broad-area vertical-cavity semiconductor optical amplifiers allow for wavelength conversion at 2.5 Gb/ s via cross-gain modulation sXGMd. XGM is reached with a saturation beam of only 1.5 mW over an optical bandwidth of 0.7 nm s215 GHzd. Depending on the wavelengths of the injected fields, inverted or noninverted output can be obtained.