10 Gb/s Ethernet over multimode fiber
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چکیده
A vast majority of the installed fiber connections in the enterprise data centers consists of veryshort-reach legacy fiber cable connections, with 62.5 μm fiber core diameter. This multimode fiber, originally installed for Fiber Optic Distributed Data Interface (FDDI) applications, is capable of handling 1-2 Gb/s. It becomes a problem at 10 Gb/s, where differential mode dispersion leads into distorted signals, and unclear and incomplete data transmission. Replacing the fiber with single-mode fiber or higher-performance multimode fiber with 50 μm core diameter is generally not a favored solution, since it requires expensive fiber assembly work and may cause major changes in other network hardware, as well.
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