You want to use Gb 1000Base-LX equipment with your existing multi-mode cable plant
1,000 base-LX is specified to work over a distance of up to 5km over 9μm single-mode fiber but 1,000 base-LX can also run over multi-mode fiber with a maximum segment length of 550m
For any link distance greater than 300m, the use of a special launch mode conditioning cable (or called mode conditioning fiber patch cord) may be required
How does mode conditioning cable work
Mode conditioning cable launches the laser at a precise offset from the center of the multi-mode fiber
The fiber can mode conditioning patch cord are designed to be used with LX/LH GBIC and other applications where both single-mode
Multi-mode interconnects must be maintained when an unconditioned laser source designed for operating on single-mode fiber cable directly coupled to an MMF cable
An effect known as differential mode delay(DMD) might occur DMD can degrade the modal bandwidth of the fiber optic cable
Which causes a decrease in the link span that can be reliably supported the solution is to launch light from the laser at a precise offset from the center
Which is accomplished by using the mode conditioning cables
The offset point creates a launch that is similar to typical multi-mode LED launches
Applications:
Telecommunications
CATVs
LAN and WAN
Networks
Broadband
FTTXs
Technical data
Insertion loss:
SM to MM ≤0.8dB (at 1310nm)
MM to MM ≤0.3dB (at 1,550nm)
Splice point offset 17um to 23μm
Environment: 0 to 50°C in door
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Supplier and product information updated May 19, 2012.
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