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Using the Multi-Wavelength Meter
Measuring Laser Separation
Channel separation
Suppose that you want to measure separation on a system having the spec-
trum shown in the following figure.
The Agilent 86120B displays separation on this spectrum as shown in the fol-
lowing figure. Notice that the 1541.747 nm laser line is selected as the refer-
ence. It is shown in absolute units. The wavelengths and powers of the
remaining responses are shown relative to this reference. For example, the
first response is 2.596 nm below the reference.
To determine channel spacing, simply read the relative wavelength measure-
ment of the laser lines immediately preceding and following the reference. Use
the , , and
SELECT
softkeys to change the reference laser line and read the
channel spacing between each channel.