Turn On Response and SMSR
To obtain the turn on response, an optical oscilloscope(OOSC_2) is used to graph the power against time, as shown in Fig. 7. It can be seen that initially the output is unstable but after time, at around 4.2ns, the output power reaches steady state. Furthermore, the side-mode suppression ratio can be measured from Fig. 7. By measuring the difference between the peaks of the first two mode peak, we find that the SMSR is 21dBm.