Anritsu MS9740B - Wavelength Accuracy

7.2 Performance Test
7-5
7
Performance Test and Maintenance
7.2.1 Wavelength Accuracy
Figure 7.2.1-1 Wavelength Accuracy Test Setup
Be sure to perform the optical axis automatic adjustment and wavelength
calibration. Follow the test procedures below.
1. Setup and connect as shown in Figure 7.2.1-1.
2. Set the output of the tunable laser source to CW.
3. Set the wavelength of the tunable laser source to 1550.00 nm.
4. Measure the wavelength with a wavelength meter and record it.
5. Set the following values to the MS9740B, and press
Single
.
Center 1550 nm, Span 1 nm, Res 0.05 nm Sampling Points 1001
6. Press
Peak Search
. Record the peak wavelength.
7. Repeat steps (3) thru (6) for the following wavelengths. Set the
following wavelengths for Center in step 5.
1520.00 nm, 1530.00 nm, 1540.00 nm, 1560.00 nm, 1570.00 nm,
1580.00 nm, 1590.00 nm, 1600.00 nm, 1610.00 nm, 1620.00 nm
8. Calculate the difference between the values measured at step 4 and
step 6.
9. Check that the value calculated in step 8 satisfies the following
specifications for wavelength accuracy.
Wavelength
tunable laser
source
Wavelength
meter
MS9740B
Optical Spectrum
Analyzer
Single mode Optical coupler