2-7
Cisco SCE8000 GBE Installation and Configuration Guide
OL-19897-02
Chapter 2 Introduction to the Cisco SCE8000 GBE Platform
Modular Optics
The SFP module has a receiver port (RX) and a transmitter port (TX) that compose one optical interface.
Table 2-4 and Table 2-5 provide SFP module information and specifications.
SFP-GE-S Modules
The 1000BASE-SX (short-wavelength) module operates on standard multimode fiber-optic link spans
of up to 500 m on 50/125µm multimode fiber (MMF) and 300 m on 62.5/125µm MMF.
SFP-GE-L Modules
The 1000BASE-LX/LH (long-wavelength/long-haul) module interfaces fully comply with the IEEE
802.3z 1000BASE-LX standard. However, their higher optical quality allows them to reach 6.2 miles (10
km) over single-mode fiber (SMF) versus the 3.1 miles (5 km) specified in the standard.
Table 2-4 SFP Module Options
SFP Module
Product Number SFP Module Description
SFP-GE-S Short wavelength (1000BASE-SX) Contains a Class 1 laser of 850 nm for
1000BASE-SX (short-wavelength)
applications.
SFP-GE-L Long wavelength/long haul
(1000BASE-LX/LH)
Contains a Class 1 laser of 1310 nm for
1000BASE-LX/LH (long-wavelength)
applications.
SFP-GE-Z Extended wavelength (1000BASE-ZX) Contains a Class 1 laser of 1550 nm for
1000BASE-ZX (extended-wavelength)
applications.
Table 2-5 SFP Module Specifications
Specification SFP-GE-S SFP-GE-L SFP-GE-Z
Wavelength 770 to 860 nm 1270 to 1355 nm 1500 to 1580 nm
Cabling distance
(maximum)
500 m on 50/125µm MMF;
300 m on 62.5/125µm MMF
6.2 miles (10 km) 49.7 miles (80 km)
Operating case
temperature range
23º to 185º F
(-5º to 85º C)
23º to 185º F
(-5º to 85º C)
23º to 185º F
(-5º to 85º C)
Storage temperature
range
-40º to 185º F
(-40º to 85º C)
-40º to 185º F
(-40º to 85º C)
-40º to 185º F
(-40º to 85º C)
Supply voltage range 3.1 to 3.5 V 3.1 to 3.5 V 3.1 to 3.5 V
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