
199Optical Direct and External Modulation
Runge–Kutta
a
lgorithm.
I
n
o
rder
t
o
s
imulate
t
he
r
eal
s
ystem,
l
aser
n
oise
(L
angevin force)
i
s
i
ncorporated
i
nto
t
he
r
ate
e
quations.
A
s
pecial
l
aser
s
ource
i
s
b
eing
m
odeled
f
or
t
he
p
urposes
o
f
t
he
s
imulation
a
nalysis.
T
he
d
ynamic
r
esponses
o
f
t
he
l
asers,
f
or
ex
ample,
r
elaxation
o
scillations,
f
requency
c
hirp,
a
nd
t
urn-on
d
elay
a
re
s
imulated
a
nd
c
onrmed
w
ith the experimental results as reported in Ref. [51].
The
e
ffect
o
f
e
ach
p
arameter
o
f
t
he
l
aser
r
ate
e
quations
t
o
t
he
r
esponse
o
f
t
he
l
aser
s
ource
h
as
b
een
a
nalyzed
a
nd
d
iscussed
i
n
d
etails.
A
ll
t
hese
r
esults
c
an
b
e
u
sed
a
s
a
g
uideline
t
o
d
esign
a
l
aser ...