12
Contents
Starting the Measurement 42
Checking the Measurement Conditions 43
Checking the Stability of the Setup 43
Repeating the PDL Measurement 43
Measuring PDL and Insertion Loss Simultaneously 44
Explanation of the Results 44
2.2 Measuring the Polarization Dependent Characteristics
of Couplers 46
PD Coupler Test Measurement Setup 46
Starting the Measurement 47
Checking the Measurement Conditions 48
Checking the Stability of the Setup 48
Continuing the Measurement 49
Repeating the Measurement 49
Explanation of the Results 50
3 Taking Standard Loss Measurements
3.1 Measuring the Insertion Loss 55
Insertion Loss Measurement Setup 56
Starting the Measurement 57
Checking the Measurement Conditions 57
Checking the Stability of the Setup 58
Explanation of the Result 58
3.2 Measuring the Return Loss 58
Return Loss Calibration Setup 59
Calibrating for RL Measurements 60
Return Loss Measurement Setup 62
Starting the Measurement 63
Checking the Stability of the Setup 63
Checking the Influence of Polarization 63
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