Two-electrode high power tapered laser with up to 40.5 W/A static modulation efficiency and 700 Mb/s direct modulation capability

We report a high modulation efficiency two-electrode tapered laser with a record 0.81 W output optical modulation amplitude for 70 mA applied current swing under 700 Mb/s direct modulation. In addition the device shows a record 40.5 W/A static modulation efficiency.