Nortel Networks 4500 Series - Manual (Page 52)

52 XFP specifications
Table 24
Launch conditions for each fiber type
Parameter Minimum encircled flux Notes
Optical launch for OM1 and
FDDI-grade fiber
•
30% within 5
µ
m radius
•
81% within 11
µ
m radius
Uses 62.5
µ
mmode
conditioning patch cord
Optical launch for OM2 and
50
µ m 400/400 fiber
•
30% within 5
µ
m radius
•
81% within 11
µ
m radius
Uses 50
µ
mmode conditioning
patch cord
Optical launch for OM3 and
50
µ m fiber
•
30% within 5 µ m radius
•
81% within 11
µ
m radius
10GBASE-LR/LW XFP specifications
The 10GBASE-LX XFP provides 10 GbE or OC-192 service at a nominal
wavelength of 1310 nm. This XFP can attain link lengths of up to 10 km.
The following table lists the transmitter and receiver specifications for the
10GBASE-LR/LW XFP. The part number of this XFP is AA1403001-E5.
For more information about the 10GBASE-LX XFP, including test and
measurement information, see the IEEE 802.3ae standard.
Table 25
IEEE 802.3ae 10GBASE-LR/LW XFP specifications
Parameter Specifications
MTBF 675 000 hours
Center wavelength range 1260 to 1355 nm; 1310 nm nominal
Distance Up to 10 km
Link optical power budget 9.4 dB
Maximum transmitter and dispersion penalty 3.2 dB at 10 km
Transmitter characteristics
Line rate (nominal) 10GBASE-LR 10.3125 Gbit/s ±100 ppm (10
GbE)
10GBASE-LW 9.95328 Gbit/s ±20 ppm
(OC-192)
Average launch power -8.2 to 0.5 dBm
Minimum side mode suppression ratio 30 dB
Minimum launch power in OMA minus
transmission and dispersion penalty (TDP) -6.2 dBm
Minimum optical modulation amplitude -5.2 dBm
Nortel Ethernet Routing Switch 4500 Series
Installation — SFPs and XFPs
NN47205-301 02.01
20 October 2008
Copyright © 2007-2008 Nortel Networks
.