How to Perform a Wavelength Sweep Tunable Lasers
Agilent 8163A/B, 8164A/B, and 8166A/B User’s Guide, Fourth Edition 125
How to Change the Frequency Offset
8 Move to [∆f] and press Enter. [∆f] represents the frequency offset, df,
in the equation above.
9 Enter 1.000 and press Enter. The frequency offset, [
∆f], changes to
1.000 THz.
NOTE Note how the output wavelength, [λ], changes as you change the value
of [
∆f].
How to Perform a Wavelength
Sweep
What is a Wavelength Sweep ?
A wavelength sweep is performed when the instrument changes the
optical wavelength of the optical output across a user-defined
wavelength range. You can use a wavelength sweep to measure the
wavelength-dependent loss of an optical component.
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 127,
•[Repeat mode], see “How to Set the Repeat Mode” on page 126.
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