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How to Use Laser Source Modules
Laser Sources
Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement System, & Agilent 8166A Lightwave
Multichannel System, Fourth Edition
95
How to Set Attenuation
The amount of power that is output from a source can be controlled. You can use
the attenuation parameter to reduce the optical power of the laser output.
P
output
= P
source
−
ATT (dB)
Where,
P
output
is the power level at the output of the module,
P
source
is the power level at the output of the source, and
ATT
is the attenuation parameter.
To set the attenuation value to 2 dB:
1
Move to the laser source channel and press the [Details] softkey. You see the
screen in Figure 62.
2
Move to the [
Attenuation
] parameter and press
Enter
.
3
Enter 2.00 and press
Enter
.
How to Modulate the Optical Output
How to Change Modulation Source
The Modulation Source parameter, [
Mod Src
], allows you to modulate the output
signal.
Figure 62
The Power Sensor Details Screen