Agilent Technologies 86038A User Manual page 36

Measurement Concepts
36
• When measuring ripple effects in either GD or IL, the step size and modulation
frequency are each important. If the step size is too coarse, there is the risk of
aliasing the ripple rate to appear at a longer period. Even when the step size is
sufficiently small to avoid aliasing, the modulation frequency could be large
enough to reduce the apparent peak-to-peak amplitude of the ripple.
Tips on Measuring Chromatic Dispersion (CD)
• The combination of moderate smoothing of both the GD trace and the CD trace
may lower the CD trace noise and preserve the CD wavelength resolution better
than smoothing the CD trace alone.
Understanding the Attributes Being Measured
Refer to "Smooth" on page
Agilent 86038A Optical Dispersion Analyzer, Third Edition
118.