App-39
IM AQ6370D-01EN
Appendix
App
Algorithms for analysis
Channel Detection, Nominal Wavelength
Parameter
THRESH
MODE DIFF
ALGO
TEST BAND
Procedure
PEAK
• Channel: Each mode peak detected via a mode search
(Except for the mode peaks at levels which are lower than
the mode at the highest level by THRESH[dB] or less.)
• Reference wavelength: Wavelength of each mode peak.
• Peak wavelength/level: Wavelength and level of each mode peak.
MEAN
• Channel: Each mode peak detected via a mode search
(Except for the mode peaks at levels which are lower than
the mode at the highest level by THRESH[dB] or less.)
• Reference wavelength: 3 dB center wavelength at each mode peak.
• Peak wavelength/level: Wavelength and level of each mode peak.
GRID FIT
• Channel: Modes within the range of GRID wavelength ± (TEST
BAND/2) among the mode peaks detected via a mode
search (except for the mode peaks at levels which are
lower than the mode at the highest level by THRESH[dB]
or less).
If the number of relevant modes in one GRID is more than
one, only the mode at the highest level will be regarded as
the channel.
• Reference wavelength: GRID wavelength nearest to each channel.
• Peak wavelength/level: Wavelength and level of the mode peak of each channel.
GRID
• Channel: A mode search shall not be performed. All GRID
wavelengths within the range of analysis shall be the
channels.
• Reference wavelength: GRID wavelength of each channel.
• Peak wavelength/level: Peak wavelength and peak level within the range of GRID
wavelength ± (TEST BAND/2) of each channel.
Appendix 6 Details of Optical Filter Analysis Function
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