
experimentally measured signal amplitude and chirp before (free running) and
after injection locking. An Advantest dynamic chirp measurement system was
used to measur e the real-time wavelength information of the signal. From the
similarity of the waveform of both the amplitude and the chirp, it is obvious
that chirp is modulation waveform dependent. The adiabatic chirp, defined as
the steady state wavelength difference between the high and low level, is due to
carrier density difference between the two levels. The transient chirp, which
occurs at the transient period of the level change, can be understood as the
wavelength variation due to carrier ...