Optical transmission for the BLM, BIC and BPM system
R. Jones, B. Todd, G. Guaglio, B. Dehning 210306
Residual power budget is calculated from the total
minus 0.6 dB time 4 connectors and 0.4 dB/km time 3 Km of fiber ~ 4 dB (to be
conservative).
For BPM we have only the residual power, the other is
estimated.
|
System |
Power
(uW) |
Lowest power |
Worst Sensitivity |
Total
Power budget |
Residual Power budget
(4connection+3 km of fiber) |
Wavelength |
Max dose rate Gy/s |
||
|
min |
Ave |
max |
dBm |
dBm |
dB |
dB |
nm |
|
|
|
BLM (digital) |
|
280 |
|
-6 |
-35 |
17 |
13 |
1310 |
0.004 (average 0.001) estimate for cabel tray on side position
70k(20k) |
|
BIC (digital) |
2 |
10 |
40 |
-23 |
-33.5 |
10.5 |
6.5 |
1310 |
|
|
BPM (analog) |
--- |
320 |
2000 |
-5 |
--- |
(10?) |
6 |
1310 |
|