7-30
IM AQ6370D-01EN
First measure the waveform of the wideband light source as a reference waveform,
then subtract the WDM optical filter’s output waveform from the reference waveform to
measure the characteristics of the WDM optical filter.
Acquiring Waveforms Required for Analysis
The following configuration and general procedure is used to measure WDM optical filter
characteristics.
A pass band type WDM optical filter is used as an example.
Reference spectrum
Wideband light source
AQ6370D
ex. TRACE A
Spectrum measurement after passing through the filter
Wideband light source
AQ6370D
DUT
ex. TRACE B
7.9 Optical Filter Characteristics Measurement
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