WSS ROADM board
9-dimensional WSS board
1) The schematic diagram of the internal structure of the WSS board is shown in the picture 1, and the board occupies 1/2 slot. required built-in BA and PA, built-in VOA before PA input; OCM, OTDR built-in optional.
2) The gain range of BA is 15~25dB; the gain of PA1 covers at least 15~25dB, and the gain of PA2 covers at least 22~35dB. For the performance requirements of BA and PA.
3) For power monitoring points, see the position of the PD icon in picture 2 of the internal structure diagram of the board; the output calibration value of BA is calibrated to the LINE OUT port; the input side of PA reports two input power values.
4) The input calibration value of the VOA is calibrated to the LINE IN port, and the input calibration value of the EDFA is the measured value at the LINE IN port minus the attenuation value of the VOA and the coupling insertion loss between the receiving side of the OSC and the main optical path. The input scaling of BA and the output scaling of PA are to be determined.
1 Schematic diagram of the internal structure of the 9-dimensional WSS board
2 9-dimensional WSS board panel diagram
Note: MON port identification 1/2 corresponds to BA and PA output respectively, OTDR port identification 1/2 corresponds to BA output and PA input respectively.
WSS Module Specifications
|
Project |
Unit |
Idex |
Note |
|
Channel Spectral Width |
GHz |
N*12.5GHz |
4≤N≤12 |
|
Wide tuning range of signal spectrum |
Nm |
1528.773～1566.73 |
|
|
Insertion Loss(Add1~9 to BA In) |
dB |
≤7.5 (typical value) |
|
|
Insertion Loss (PA Out to Drop1~9) |
dB |
≤7.5 (typical value) |
|
|
The maximum difference in insertion loss of each channel |
dB |
≤2.5 |
|
|
Port isolation |
dB |
＞25 |
|
|
Extinction Ratio |
dB |
≥25 |
|
|
polarization dependent loss |
dB |
≤1.5 |
|
|
Attenuation range per wavelength |
dB |
0~15 |
|
|
Decay setting step size |
dB |
0.2 |
|
|
Attenuation accuracy per wavelength |
dB |
≤1 |
(0～10dB) |
|
≤1.5 |
( > 10dB) |
||
|
refactoring time |
s |
≤3 |
|
|
1dB minimum spectral width |
GHz |
>50 |
@100GHz spectral width |
|
3dB minimum spectral width |
GHz |
>75 |
@100GHz spectral width |
|
20dB minimum spectral width |
GHz |
<150 |
@100GHz spectral width |
|
Mon split ratio |
dB |
16~23 |
Split ratio 1%~2% |
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