App-38
IM AQ6370D-01EN
WDM FILTER PEAK Analysis Function
This function enables the collective analysis of multiple items for each channel via the
measured waveforms of multi-channel optical filters.
It also enables filter analysis for multi-mode waveforms, which is different from FILTER
PEAK analysis.
Items for analysis
Item for Analysis Description
Nominal Wavelength Reference wavelength/frequency of each channel.
Peak Wavelength / Level Peak wavelength/frequency and level of each channel.
xdB Width / Center Wavelength xdB width of each channel and its center wavelength/frequency.
xdB stop-band Wavelength width/frequency width across xdB of each channel.
xdB pass-band Pass band xdB from the bottom within the test band of each
channel.
Ripple Max-min level (flatness) within the test band of each channel.
Cross Talk Difference in level from the position xnm away from each
channel.
List of Parameters
Item Parameter Default Setting Range Unit
Channel Detection,
Nominal Wavelength
ALGORHYTHM MEAN
PEAK / MEAN / GRID/
GRID FIT
-
MODE DIFF 3 0.1 to 50.0 dB
THRESH 20 0.1 to 99.9 dB
TEST BAND 0.1 0.001 to 9.999 nm
Peak Wavelength/
Level
SW ON ON / OFF -
XdB Width SW ON ON / OFF -
Center Wavelength THRESH 3 0.1 to 50.0 dB
XdB stop-band
SW ON ON / OFF -
THRESH LVL −10 −90.00 to 30.00 dB
XdB pass-band
SW ON ON / OFF -
THRESH 3.0 0.1 to 50.0 dB
TEST BAND 0.20 0.01 to 99.99 nm
Ripple
SW ON ON / OFF -
TEST BAND 0.20 0.01 to 99.99 nm
Cross Talk
SW ON ON / OFF -
SPACING 0.80 0.01 to 99.99 nm
TEST BAND 0.20 0.01 to 99.99 nm
Appendix 6 Details of Optical Filter Analysis Function