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Power stability
Relative intensity noise (RIN)
Keysight N777-C Series Tunable Laser Family User's Guide
Specifies the change of the power level of the tunable laser source over
time, expressed as ± half the span (in dB) between the highest and lowest
actual power.
Figure 20
Conditions:
Time span as specified. Uninterrupted tunable laser source output power,
constant wavelength and power level settings, constant temperature.
Other conditions as specified.
Specifies the ratio between the mean-square of the optical power
fluctuation amplitude
bandwidth B, and the square of the average optical power P
RIN, if expressed as "dB/Hz", is calculated by:
Power stability.
Δ
P
within a specified frequency range f and for
f,B
Definition of Terms
3
.
avg
51
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