How to Perform a Wavelength Sweep Tunable Lasers
Agilent 8163A/B, 8164A/B & 8166A/B Mainframes, Sixth Edition 135
How to Set the Wavelength Sweep
The Sweep Parameters
These are the parameters for the wavelength sweep:
• [λ Start], the wavelength at which the sweep begins,
• [λ Stop], the wavelength at which the sweep ends,
•[Step], the size of the change in the wavelength for each step of a stepped
sweep,
•[Cycles], the number of times the sweep is repeated,
•[Dwell], the amount of time spent at the wavelength during each step, for a
stepped sweep
•[Vsweep], the speed of a continuous sweep,
•[Sweep mode], see “How to Perform a Sweep” on page 137,
•[Repeat mode], see “How to Set the Repeat Mode” on page 135.
Figure 70 The Parameters for a Stepped Wavelength Sweep
How to Set the Repeat Mode
The [Repeat Mode] determines how the instrument performs a multi-cycle
sweep.
• Select <Two w a y >, if you want to start every odd sweep cycle at [λ Start] and to
start each even sweep cycle at [λ Stop].
For a <Continuous> sweep, [Step] sets the wavelength interval between
output triggers, if you have set <Output Trigger Mode> to <Step Finished>,
see “How to Use Output Triggering” on page 152.
NOTE
Sweep Cycles = 1
λ
t
λ
Stop
Dwell
Step
λ
Start
Time
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