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EXFO PSO-200 Optical Modulation Analyzer User Manual

Page 33

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Setting Up the Optical Modulation Analyzer

Optical Modulation Analyzer

25

Using Special Modulation Modes

The figure below shows an example of intensity sampling of 42 GBd QPSK
data (top: intensity eye diagram; bottom: corresponding 127 bit pattern).
The intermediate frequency recovery algorithm is bypassed so that only
intensity is sampled. The phase information is not retrieved.