Technical Specifications
Issue 8.0 July 2002
10-11
FT-2000 OC-48 Lightwave System and
FT-Lightwave Booster Amplifier 10
The FT-2000 OC-48 Lightwave System is also designed to meet the OC-48 loss budget
specifications shown in Table 10-7 when operating with the FT-Lightwave Booster Amplifier.
* These values include transmitter/receiver connectors @ 0.7 dB each (worst case) and
the system margins.
†Optional: Subtract 3.5 dB for pump redundancy.
‡ These values are based on a system performance of 2100 psec/nm which yields 120 km for a fiber dispersion
of 18 psec/nm km.
§ These values are based on a system performance of 2520 psec/nm which yields 140 km for a fiber dispersion
of 18 psec/nm km.
Table 10-7. FT-2000 OC-48 Lightwave System and FT-Lightwave Booster
Amplifier Loss Budgets
9-dBm FT-LBA 12-dBm FT-LBA 16-dBm FT-LBA
Parameter
Standard
Fiber
Dispersion
Shifted
Fiber
Standard
Fiber
Dispersion
Shifted
Fiber
Standard
Fiber
Dispersion
Shifted
Fiber
Maximum Transmitter Power
(P
Tmax
) 11.0 dBm 11.0 dBm 15.0 dBm 15.0 dBm 17.0 dBm 17.0 dBm
Nominal Transmitter Power 9.0 dBm 9.0 dBm 12.0 dBm 12.0 dBm 16.0 dBm 16.0 dBm
Minimum Transmitter Power
(P
Tmin
)*
7.0 dBm 7.0 dBm 10.0 dBm 10.0 dBm 14.0 dBm 14.0 dBm
Receiver Sensitivity (P
Rmin
)* −27.0 dBm −27.0 dBm −27.0 dBm −27.0 dBm −27.0 dBm −27.0 dBm
Minimum System Gain (S-R) 34.0 dB 34.0 dB 37.0 dB 37.0 dB 41.0 dB 41.0 dB
Optical Path Penalty (P
O
) 2.0 dB 1.0 dB 2.0 dB 1.0 dB 2.0 dB 1.0 dB
Maximum Loss Budget 32.0 dB 33.0 dB 35.0 dB†36.0 dB†39.0 dB†40.0 dBâ€
Dispersion Limit 120 km‡— 140 km§— 140 km§—