28-ps switching window with a selective area MOVPE all-optical MZI switch

The first dynamic all-optical switching of a bandgap-engineered Mach-Zehnder interferometer semiconductor optical amplifier all-optical switch was achieved. A 28-ps switching window was successfully confirmed. This is the first demonstration of a bandgap-engineered large-scale all-optical photonic integrated circuit with either selective-area-growth or quantum-well-intermixing techniques.