
194 Optical Fiber Communication Systems with MATLAB
®
and Simulink
®
Models
voltage,
V
SW
. Figure 5.42b shows the signal in time domain that should be employed so that
the optical output signal can be in the nonchirp and linear behavior.
The
voltage for switching the modulator from the on state to the off state, the switching
voltage V
SW
is typically in the range of 1.5–4 V, and the dynamic ER is usually in the range
of 11–13 dB.
Compared
to the EOM described in details in the following text, EAMs can operate with
much lower voltages, a few volts instead of ten volts or more. They can be operated at very
high speed; a modulation bandwidth of ten