User`s guide

Performance Test Instructions Performance Tests
Agilent 81689A, 81689B and 81649A Tunable Laser Modules User’s Guide, Third Edition 57
12 Set wavelength and power as given in Table 12..
13 Set the power meter channel of the 81626B to the following settings:
a Select Automatic ranging. This is the default setting.
b Set the Averaging Time to 500 ms.
c Set λ, the wavelengt h, t o t h e s a me as your Tu nable Laser modu le ,
as given in Table 12.
d Select dB as the power units.
14 Make sure the laser is switched on.
15 Select the channel for the 81626B. Press the DISP->REF hardkey.
16 Increase the wavelength of the Tunable Laser module and of the
Power Meter to the next value listed in the test record.
17 Measure the change in output power. Note this value (in dB) in the
test record.
18 Repeat steps 15 and 16 for the wavelength settings given in the test
record.
19 From the measurement results calculate the difference between the
maximum and minimum deviation from REF and note the result as
the Flatness.
Table 12 Wavelength and Power Settings for Power Flatness over Wavelength at
minimum output power
Module Wavelength [λ] Power [P]
Agilent 81689A 1525.000 nm - 3.000 dBm
Agilent 81689B 1525.000 nm +0.000 dBm
Agilent 81649A 1570.000 nm - 3.000 dBm