Keysight N777-C Series Tunable Laser Family User’s Guide 57
Definition of Terms 3
Wavelength resolution
The smallest selectable wavelength increment or decrement.
Wavelength stability
Specifies the change of the actual wavelength of the tunable laser source
over time, expressed as ± half the span between the maximum and
minimum of all wavelengths.
Conditions: Time span as specified, uninterrupted tunable laser source output power,
constant wavelength and power level settings, constant temperature.
Other conditions as specified.
Measurement: Using a wavelength meter, averaging time
≥ 1s.
The long-term wavelength repeatability can be obtained by taking the
wavelength repeatability and wavelength stability into account.
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