
226 Optical Fiber Communication Systems with MATLAB
®
and Simulink
®
Models
The
33%
duty-ratio
RZ
pulse
is
denoted
by
RZ33
pulse
whereas
the
67%
duty
cycle
RZ
pulse
is
known
as
the
CSRZ
type.
The
art
the
in
generation
of
these
two
RZ
pulse
types
stays
a
t
t
he
d
ifference
o
f
t
he
b
iasing
po
int
o
n
t
he
t
ransfer
c
urve
o
f
a
n
M
ZIM.
The pulse shape of these two RZ types can be generated with the carrier suppression and
nonsuppression of the maximum-level carrier. This can be implemented with the biasing
points at the minimum and maximum transmission points of the transmittance charac-
teristics of the MZIM, respectively. The peak-to-peak amplitude of the ...