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Chapter 2 Polarization Mode Dispersion Measurement
Display of results
Display of results
Spectrum/FFT key
The key
Spectrum / FFT
•
The spectrum representing the power (in dBm) according to the frequency (in
THz) or wavelength (in nm).
•
The FFT curve and PMD information (delay & coefficient) according to the Fast
Fourier Transform Method. The FFT trace represents the PMD delay in ps.
Display of PMD results
The PMD results screen is split in 3 main areas. from top to bottom::
•
The information bar with:
–
–
–
–
–
•
The FFT curve and its gaussian shape (for strong mode coupling only).
•
the table of results: PMD delay and coefficient, second order PMD (PMD2) delay
and coefficient. This table is different if statistic measurement is selected (see
"Statistics results" on page
The results are displayed in black when no alarm is defined, in green if alarms are within
the threshold defined in the Setup menu and in red if the alarms exceed the thresholds
defined.
22
enables you to display:
number of acquisitions used for the statistics (Acq)
wavelength range,
date and time of acquisition.
file name (if result stored in memory)
Pass/fail indication
User Manual
24).
700MAN902 Rev. 000
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