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Figure 5-9
N OT E
Tunable Laser Sources
How to Perform a Wavelength Sweep
Figure 5-9 illustrates how these modes work for a three-cycle
wavelength sweep.
<T
WOWAY
λ
1
λ Stop
λ Start
Repeat Modes
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 98. Pressing [Pmax/Swp] ensures the power will be
constant for the whole sweep.
How to Perform a Sweep
There are three sweep modes:
•
<S
TEPPED
certain step size,
•
<C
ONTINUOUS
set, and
•
<M
ANUAL
You cannot turn the laser off by pressing the O
Tunable Laser front panel, while a wavelength sweep is running.
You can press [Stop] and, then, press the O
Tunable Laser front panel, to turn off the laser.
111
>
2
3
λ Stop
λ Start
t
>, which stops at wavelengths that are separated by a
>, which sweeps continually at the speed you
>, which you can run each step manually.
<O
>
NEWAY
λ
1
2
hardkey on the
UTPUT
hardkey on the
UTPUT
3
t
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