YOKOGAWA AQ6370D - Page 419

App-48
IM AQ6370D-01EN
RIPPLE
λ
i
Wavelength
nominal wavelength
Port
A
Port B
Level [dB]
Ripple
Minimum Level
in Test Band
Maximum Level
in Test Band
Test Band
Parameter
TEST BAND
Procedure
• Perform the peak search and bottom search within the range of parameter Test_
Band/2 by centering on reference wavelength λi of each channel, and obtain the peak
level (LP’i) and the bottom level (LB’i).
• Use the peak level (LP’i)and bottom level (LB’i) obtained in the above procedure to
obtain the ripple (Ripple) from the following equation:
Ripple = LP’i − LB’i
Appendix 6 Details of Optical Filter Analysis Function