User`s guide

Performance Tests Performance Tests
64 Agilent 81618A/9A and Agilent 81623B/4B/6B/8B Optical Heads, Fourth Edition
Theoretically, both Power Meters are monitoring the power ratio over the
variable wavelength in a predefined range as shown in Figure 15 . Ensure
that the tunable laser source is mode-hop free in the tested wavelength
range.
Figure 15 Interference Ripple