Anritsu MS9740B - WDM Filter Transmission Characteristics Measurement Method

5.9 Measuring WDM Filter
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Measurement Functions
5.9.1 WDM Filter Transmission Characteristics Measurement Method
A light source with a continuous spectrum, (for example, SLD (Super
luminescent diode)), is required to measure the transmission
characteristics of the WDM filter. The spectra of both of the light source
and the light passed through the WDM filter are measured. The
transmission characteristics of the WDM filter are obtained from the
difference between measured waveforms.
Figure 5.9.1-1 Example Spectra of Light Source and Light Passed Through
Filter—1
Figure 5.9.1-2 Example Spectra of Light Source and Light Passed Through
Filter—2