Tunable Lasers How to Use Auxiliary Functions
128 Agilent 8163A Lightwave Multimeter, Agilent 8164A Lightwave Measurement
System, & Agilent 8166A Lightwave Multichannel System, Fourth Edition
How to Use Auxiliary Functions
Automatic Realignment
Automatic Realignment realigns the laser cavity after Laser Protection. You
should use Automatic Realignment if you have already tried to reactivate the laser
and to reduce power, and this has been unsuccessful.
To realign the laser cavity:
1 Move to the Tunable Laser channel and press Menu.
2 Move to <Realign> and press [OK]. You will see the screen in Figure 83.
3 Wait approximately 30 minutes. This time depends on how much the
wavelength of the instrument has drifted since the last Automatic Realignment
was performed.
How to Perform a Wavelength Zero
Performing a Wavelength Zero recalibrates the optical wavelength. This
wavelength may drift due to a change in temperature and other environmental
conditions.
A Wavelength Zero is automatically performed when the instrument boots or
when an Automatic Realignment is performed.
The instrument automatically performs a wavelength zero from time to time. To
avoid interruption of your measurements, you should perform a wavelength zero
at a time of your choice.
Figure 83 Realign Screen
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