Modulation Control - Keysight N77 Series N7711A User Manual

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Modulation Control

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Keysight N77xx Series
Some tunable laser modules do not allow changing this parameter if the laser output
is on.
Switch the frequency control dither modulation on or off
This tuning feature is not supported on every tunable laser model. In this case the
FC Dither control is disabled and grayed out.
Some tunable laser models use a dither tone which is used for
controlling the emission frequency at its target value resulting in a very
small frequency and output power variation. In case the modulation is
unwanted the FC Dither control allows you to switch this modulation
off (or on again).
In the case, FC Dither is supported but switched off, the laser frequency might drift.
Switch the frequency modulation on or off
The frequency modulation control allows you to switch the frequency
modulation on or off.
This feature might not be supported by your tunable laser module. In this case the
control is disabled and grayed-out.
Set the frequency modulation deviation
The frequency deviation control allows you to set the frequency
modulation deviation in GHz. The frequency modulation feature can be
used for SBS suppression.
This feature might not be supported by your tunable laser module. In this case the
control is disabled and grayed-out.
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Tunable Laser Source
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