R - 10
Reference
FiberPoint Structured Wiring Enclosure Installation Guide
Form 361015-0001A
:
Table R-3: VPON Optical Budget
1550nm Laser Transmitter
Characteristic
Value Type
Level
Tolerance
Laser Output Power
Nominal
6-9 dBm
± 0.5 dB
20 Port EDFA
Characteristic
Value Type
Level
Tolerance
EDFA Output Power
Nominal
20 dBm
± 0.5 dB
Input Power
Range
+5 to +10 dBm
Input Power
Typical
6.0 dBm
FiberPoint
Characteristic
Value Type
Level
Tolerance
Optical Input Power (@ 3.8% OMI)
Minimum
- 5 dBm
Optical Input Power (@ 3.8% OMI)
Maximum
2 dBm
Planning for Worst Case
The VPON system is a 1550nm transmission.
The 1550 nominal transmit power is 6-9 dBm into the EDFA. The minimum EDFA output is 19.5 dBm
(power of lowest output port at maximum gain)
Insertion Losses
6 Mile Fiber Loss @ 1550 nm
2.40 dB
1 x 32 Split using (1:8s and 1:4s)
17.63 dB
CWDM
1.2 dB
FiberPoint Connector
.25 dB
Splices (.03 dB per splice)
.09 dB
3 Sigma
1.0 dB
Total
22.57 dB
Optical Budget Calculation: 19.5 dBm (EDFA Output) + (-22.57) dB (Total Path Loss) = - 3.07 dB
