Figure 6

(a) Waveforms of the optical pulses from the laser diode generated with different driving voltages ranging from 0.9 to 1.4 V (for easy observation of the pulse shapes, the electrical pulse widths are tuned to cut off the steady state). (b) Delay times of the optical pulses from the laser diode generated with different driving voltages ranging from 0.9 to 1.4 V.