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3
Specifications and Regulations Compliance
N O T E
Literature
60
Wavelength (frequency) repeatability
The random uncertainty in reproducing a wavelength (frequency) of the
tunable laser source after changing and re-setting the wavelength
(frequency). The wavelength (frequency) repeatability is ± half the span
between the maximum and the minimum of all actual values of this
wavelength (frequency).
Conditions: Uninterrupted tunable laser source output power, constant
power setting, constant temperature.
The long-term wavelength repeatability can be obtained by taking the wavelength
repeatability and wavelength stability into account.
Wavelength resolution
The smallest selectable wavelength (frequency) increment or
decrement.
Wavelength (frequency) stability
Specifies the change of the actual wavelength (frequency) of the tunable
laser source over time, expressed as ± half the span between the
maximum and minimum of all wavelengths (frequencies).
Conditions: Time span as specified, uninterrupted tunable laser source
output power, constant wavelength and power level settings, constant
temperature.
Warm-up time
Time after power-up of the acclimated instrument after which the
specifications and characteristics apply.
1 Fiber Optic Test and Measurement, Hewlett Packard Professional
Books, edited by Prentice Hall, ISBN 0-13-534330-5
Keysight N77xx Series
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