Keysight Technologies N778-C Series User Manual page 50

3 Definition of Terms
Second Order PMD
Polarization-Dependent Chromatic Dispersion (PCD)
Depolarization Rate
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The second-order PMD, S, quantifies the magnitude of the differential
change of the Polarization mode dispersion (PMD) vector, with angular
optical frequency, ω, expressed in [ps
Second-order PMD can be expressed in [ps/nm] at a wavelength of
NOTE
1550 nm by multiplying the [ps
The PCD, quantifies the differential change of the magnitude of the
Polarization mode dispersion (PMD) vector, with angular optical frequency,
ω, expressed in [ps
The depolarization rate, d, quantifies the absolute value of the differential
change of the normalized Polarization mode dispersion (PMD) vector, with
angular optical frequency, ω, weighted with the DGD (expressed in [s
The depolarization rate is a measure of how fast the PMD vector changes
NOTE
direction with the rotational frequency of the optical wave (or with the
wavelength).
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],
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] value with the factor 0.784 nm/ps.
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],
Keysight N778-C Series Polarization Instruments User's Guide
2
]).