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Performance Tests
Test 3. Polarization Dependence
Test 3. Polarization Dependence
Description Polarization Dependence is verified using the following devices:
• 1310 nm and 1550 nm DFB lasers
• Optical attenuator
• Agilent 11896A polarization controller
CAUTION Do not exceed +18 dBm source power. The Agilent 86120C’s input circuitry can
be damaged when total input power exceeds 18 dBm.
Procedure Perform the following procedure first using the 1310 nm laser and
then repeat the steps using the 1550 nm laser.
1 Turn on the lasers and allow them to warm up.
2 Set the polarization controller to a scan rate of 5.
3 On the Agilent 86120C, press the Preset key.
4 Connect the laser’s optical output to the polarization controller’s optical
input.
5 Connect the polarization controller’s optical output to the
Agilent 86120C being tested.
6 Set the polarization controller to autoscan.
7 On the Agilent 86120C, press Peak WL, Appl’s, and then DRIFT. Press
MAX-MIN so that both MAX and MIN in the softkey label are highlighted.
The display shows the total drift since the drift measurement was
started.
8 Wait five minutes, read the peak amplitude drift from the
Agilent 86120C, and compare with the specification listed in Chapter 6,
“Specifications and Regulatory Information”.