7
Example
3
-
Finding
the
Optimum
Transmission
SoP
Example
3
-
Finding
the
Optimum
Transmission
SoP
Function
This
program
performs
the
same
sequence
as
the
example
session
given
in
chapter
2.
That
is
,
to
nd
the
state
of
polarization
for
optimum
transmission
for
a
linear
device
under
test
(DUT).
Requirements
F
or
this
example
,
you
will
need,
apart
from
the
polarization
controller
,
a
laser
source
,
and
a
power
meter
(in
the
description
below
,
an
HP
8153A
Multimeter
with
a
laser
module
and
a
sensor
module
are
used).
W
e
will
use
the
length
of
ber
connecting
the
instruments
as
our
linear
DUT
.
Setting
Up
the
Equipment
1.
With
both
instruments
switched
o,
connect
the
laser
source
to
the
polarization
controller
.
2.
Connect
the
polarization
controller
to
the
power
meter
.
Setup
for
setting
the
position
of
the
polarizing
lter
.
3.
Switch
on
both
instruments
,
and
enable
the
laser
source
.
4.
Set
the
channel
with
the
sensor
module
to
the
wavelength
of
the
source
,
and
select
the
default
averaging
speed
(200ms).
Programming
Examples
7-7