Nortel Optical Multiservice Edge 6130, Руководство по планированию, Страница: 127 / 292

Technical specifications 7-25
Planning Guide NT6Q92MA Rel 1.0 Iss 1 Standard September 2006
Table 7-24 lists the optical specifications for the STM-4 optical SFPs.
Table 7-24
Optical specifications for STM-4 SFPs
Nominal reach (see Note 3 ) 2 km 15 km 40 km 80 km
Maximum dispersion - 96 ps/nm - -
Minimum optical return loss - - - 20 dB
Dispersion limited distance
(see
Note 4 )
- 16 km - -
Attenuation limited distance
(see
Note 4 )
2 km 34.3 km 80 km 112 km
Note 1: All parameter values in the above table achieve an optical system BER better than 1x10
-10
when used over G.652 specified SMF-28 fiber. The exception is SR0 where the values are for use over
62.5
μ
m core, 500 MHz-km modal bandwidth MMF as specified in ANSI T1.416.01-1999.
Note 2: Power monitor accuracy figures are for normal operating range (minimum to maximum transmit
power, receiver sensitivity to overload).
Note 3: Nominal reach figures are for classification purposes only as defined in the appropriate
standards.
Note 4: The dispersion and attenuation limited distances are based on the dispersion and attenuation
coefficients detailed in Table 7-22 on page 7-23 and are for guidance only and must be verified by a full
link budget calculation. The actual limiting distance is the lower of the dispersion limited or attenuation
limited distances.
Classification L4.1 L4.2
PEC NTTP05EF NTTP05FF
Transmitter
Transmitter type DFB laser DFB laser
Nominal wavelength 1310 nm 1550 nm
Transmit output power (max) +2 dBm +2 dBm
Transmit output power (min) -3 dBm -3 dBm
Spectral width 1 nm (-20 dB) 1 nm (-20 dB)
Minimum side mode suppression ratio 30 dB 30 dB
Minimum extinction ratio 10 dB 10 dB
Power monitor accuracy (see Note 2 ) +/- 2 dB +/- 2 dB
Receiver
Receiver type APD APD
Classification SR0 IR1/S1.1 LR1/L1.1 LR2/L1.2