YOKOGAWA AQ6370D User Manual

App-46
IM AQ6370D-01EN
BOTTOM WL / BOTTOM LVL
Parameter
THRESH
MODE DIFF
Procedure
Obtain the wavelength λ’i of the mode bottom of each channel and its signal optical level
LBi.
XdB_NOTCH_WIDTH/CENTER WAVELENGTH
Parameter
ALGO
Procedure
According to the settings of the parameter ALGO, obtain the xdB notch width
(xdB_Notch_Width) of each channel and its center wavelength/frequency
(Center_Wavelength).
NOTCH(B)
Wavelength
Level [dB]
Center Wavelength
Bottom Level
xdB
Port
A
Port
B
xdB Notch Width
Obtain the width (xdB_Notch_Width) between the two points, which are above the bottom
level of each channel by the parameter THRESH_LEVEL, and its center wavelength
(Center_Wavelength).
NOTCH(P)
Wavelength
Level [dB]
Port
A
Port
B
Level peak
between
xdB
λ
i
Mode Bottom
xdB Notch Width
Center Wavelength
λ
i-1
and λ
i+1
λ
i+1
λ
i-1
Mode Bottom
Mode Bottom
Obtain the width (xdB_Notch_Width) between the two points, which are below the higher
point of either the left peak level or the right peak level of each channel by the parameter
THRESH_LEVEL, and its center wavelength/frequency (Center_Wavelength).
Appendix 6 Details of Optical Filter Analysis Function

YOKOGAWA AQ6370D Specifications

General

Brand	YOKOGAWA
Model	AQ6370D
Category	Measuring Instruments
Language	English