Measurement
Considerations
N
O
T
E
Even
minor
damage
or
contamination
to
the
connector
faces
will
result
in
a
signicant
increase
in
return
loss,
therefore
return
loss
is
listed
in
T
able
1-1
as
a
characteristic
,
non-warranted
performance
parameter
.
Extinction
ratio
The
extinction
ratio
describes
the
ability
of
the
Agilent
11896A
polarization
controller
to
adjust
for
all
states
of
polarization.
A
specic,
extreme
example
is
shown
in
Figure
B-1
.
The
ratio
of
the
maximum
power
to
the
minimum
power
that
can
be
coupled
through
the
second
polarizer
is
the
extinction
ratio
.
In
the
Agilent
11896A,
the
extinction
ratio
is
determined
by
the
angular
resolution,
60.18
degrees
,
of
the
paddles
.
This
assumes
the
degree
of
polarization
of
the
input
signal
to
the
Agilent
11896A
approaches
100%
and
the
extinction
ratio
of
the
second
linear
polarizer
exceeds
the
extinction
ratio
of
the
Agilent
11896A.
Figure
B-1.
Block
diagram
for
testing
the
extinction
ratio
of
the
Agilent
11896A.
B-4
Summary of Contents for 11896A
Page 2: ...User Programming and Service Guide Agilent 11896A Polarization Controller ...
Page 17: ...Contents ...
Page 18: ...1 General Information ...
Page 30: ...General Information Speci cations and Characteristics 1 13 ...
Page 35: ...General Information ...
Page 36: ...2 Installation and Preparation for Use ...
Page 54: ...3 Using the Agilent 11896A Polarization Controller ...
Page 59: ...Rear Panel Features The Agilent 11896A rear panel 1 Power input 2 GPIB connector 3 6 ...
Page 65: ...Using the Agilent 11896A Polarization Controller Using the Agilent 11896A ...
Page 66: ...4 Programming ...
Page 100: ...5 Veri cation and Service Information ...
Page 121: ...Veri cation and Service Information ...
Page 122: ...A Choosing the Scan Rate and Measurement Time ...
Page 126: ...B Measurement Considerations ...
Page 131: ...Measurement Considerations ...
Page 132: ...Index ...
