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This letter reports on an InP Mach-Zehnder interferometer semiconductor optical amplifier all-optical wavelength converter monolithically integrated with a sampled grating distributed Bragg reflector laser. The device is fabricated using centered quantum wells to achieve a high modal overlap with the active region. The active and passive waveguide regions are defined using an impurity-free quantum-well intermixing technique. The device is shown to perform error-free at 10-Gb/s data rates with a 30-nm output tuning range. The device's output power is also measured to be >3 dBm across the range.