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Single Mode vs. Multi-mode Fiber Optic Patch Cables

It’s the core of fiber cables that carries the light to transmit data – and the main difference between Singlemode and Multi-mode fiber patch cables is the size of their respective cores.

Singlemode cables have a core of 8 to 10 microns. In singlemode cables, light travels toward the center of the core in a single wavelength. This focusing of light allows the signal to travel over longer distances without a loss of signal quality than is possible with Multi-mode cabling. Most Singlemode cabling is color-coded yellow.

Multi-mode cables have a core of either 50 or 62.5 microns. In Multi-mode cables, the larger core gathers more light compared to Singlemode, and this light reflects off the core and allows more signals to be transmitted. Although more cost-effective than Singlemode, Multi-mode cabling does not maintain signal quality over long distances. Multimode cables are generally color-coded orange or aqua; the Aqua Fiber Patch Cables are for higher performance 10Gbps, 40Gbps, and 100Gbps Ethernet and fiber channel applications.



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