User`s guide

Performance Tests Performance Test Instructions

50 Agilent 81689A, 81689B and 81649A Tunable Laser Modules User’s Guide, Third Edition

2 Set the menu parameters to the values shown in Table 5.

3 Set the wavelength and power of your Tunable Laser module to the

values given in Table 6.

4 Press the key beside the laser output to switch on the laser output.

5 Wait until the wavelength meter has settled, then note the

wavelength displayed on the wavelength meter in the test record.

6 Increase the wavelength setting of the Tunable Laser module by the

steps shown in the test record.

7 Repeat steps 5 and 6 up to the maximum wavelength values shown

in Table 7.

8 Repeat steps 3 through 7 another 4 times.

9 From each repetition of the measurements, pick the maximum and

minimum deviations, and note these values in the test record.

10 Determine the Relative Wavelength Accuracy, Summary of all

Repetitions:

a Pick the largest Maximum Deviation, and note it as the Largest

Maximum Deviation in the test record.

b Pick t he sm allest Min imum Dev iation, and n ote it as t he Smallest

Minimum Deviation in the test record.

Table 5 Tunable Laser Channel Settings

Tunable Laser Channel Menu Parameters Values

Table 6 Initial Wavelength and Power Settings for Relative Wavelength Accuracy Tests

Module Wavelength [λ] Power [P]

Agilent 81689A 1525.000 nm − 3.00 dBm

Agilent 81689B 1525.000 nm 0.00 dBm

Agilent 81649A 1570.000 nm − 3.00 dBm

Table 7 Maximum Wavelength for Relative Wavelength Accuracy Tests

Tunable Laser Module Maximum Wavelength Value

Agilent 81689A 1575 nm

Agilent 81689B 1575 nm

Agilent 81649A 1620 nm