How to Perform a Wavelength Sweep Tunable Lasers
Agilent 8163A/B, 8164A/B, and 8166A/B User’s Guide, Fourth Edition 127
How to Set the Maximum Power for the Sweep Range
Pressing [Pmax/Swp] sets the power to the maximum for the selected
sweep range. Alternatively, you can set a power level in the way
described in “How to Set the Output Power of a CW Signal” on
page 116. Pressing [Pmax/Swp] ensures the power will be constant for
the whole sweep.
How to Perform a Sweep
There are three sweep modes:
•<Stepped>, which dwells at wavelengths that are separated by a
certain step size,
•<Continuous>, which sweeps continually at the speed you set, and
•<Manual>, which you can run each step manually.
NOTE You cannot turn the laser off by pressing the Active hardkey on the
Tunable Laser front panel, while a wavelength sweep is running.
You can press [Stop] and, then, press the Active hardkey on the
Tunable Laser front panel, to turn off the laser.
How to Execute a Stepped Sweep
To execute a stepped wavelength sweep over the range 1510 nm to
1570 nm, three times, sweeping two ways, in 1 nm steps, stopping for
half a second at each wavelength step:
1 Move to the Tunable Laser channel and press [Details].
2 Move to [Sweep Mode] and press Enter.
3 Move to the <Stepped> sweep mode and press Enter.
4 Move to [λ Start] and press Enter.
5 Enter 1510.000 and press Enter.
6 Move to [λ Stop] and press Enter.
7 Enter 1570.000, press Enter.
8 Move to [Cycles] and press Enter.
9 Enter 3 and press Enter.
10 Move to [Repeat Mode] and press Enter.
11 Move to <Twoway>, by using the cursor key, and press Enter.
12 Move to [Step] and press Enter.
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