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Measuring Fabry- Perot (FP) Lasers
The Agilent 86120C can perform several measurements on Fabry- Perot
lasers including FWHM and mode spacing. The display shows the mea-
surement results in the selected wavelength and amplitude units. In
addition, the mode spacing measurement always shows results in fre-
quency as well as the selected wavelength units.
units" on page 2- 12
laser lines included in the measurement results is also listed as shown
in the following figure.
To characterize a Fabry- Perot laser
1 Press Appl's.
2 Press FP TEST to measure the Fabry- Perot laser's characteristics.
If you want to stop the updating of measurement data with each
sweep, press Single. Because Fabry- Perot lasers are sensitive to reflec-
tions it is good measurement practice to place an optical isolator or
attenuator between the laser and the Agilent 86120C.
to learn how to change the units. The number of
Making Measurements
Measuring Fabry-Perot (FP) Lasers
Refer to "Displayed
2-31
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