EXFO FLS-2200 Broadband Source - Manual (Page 95)

Technical Specifications
Broadband Source 87
Ripple (dB) Defines the maximum amplitude of local
variations in the spectral density of the
source. These ripples are characteristic to
the SLED and do not move significantly over
time.
an OSA with a
0.1-nm-resolution
bandwidth
Total output
power (dBm)
Amount of energy measured with a power
meter. It is the absolute power value
measured at the end of a 3-meter patchcord
connected to the source output.
a power meter set at the
source’s central
wavelength
Degree of
polarization (%)
Ratio of the polarized power over the total
power. Some sources, such as DFBs, lasers
and most of the SLEDs have a very high
degree of polarization (> 90 %). Some
others, such as white light, ASE, LEDs and
some SLEDs, have a very low degree of
polarization (< 10 %).
Most detectors (power meters and OSAs)
are sensible to polarization changes
(polarization-dependent response —PDR).
Selection of the emitter and detector must
take these parameters into account,
especially if the device under test presents a
high polarization dependency.
a degree-of-polarization
(DOP) meter
Element Description Measured with...