Anritsu MS9740B - Measuring FP-LD (Fabry-Perot Laser Diode)

5.2 Measuring FP-LD (Fabry-Perot Laser Diode)
5-7
5
Measurement Functions
5.2 Measuring FP-LD (Fabry-Perot Laser Diode)
A Fabry-Perot laser diode is a semiconductor laser diode with a multi
mode oscillation in the spectrum.
The following items can be measured by the FP-LD measurement
functions.
● Peak: Peak wavelength and peak level
● Mean Wl: Center wavelength
● FWHM: Spectral width using RMS method (2.35
σ
)
● Total Power: Spectrum integration power
● Mode ( n dB): Number of longitudinal modes
● Mode Spacing: Interval between longitudinal modes
●
σ
: Standard deviation of spectrum using RMS
method
Figure 5.2-1 FP-LD Test Example