It is designed to absorb shocks, prevent excessive bending and reinforce the fiber core.The hardware loopback plug test is used to see if the router has any faults. Primary Coating - This layer of thicker plastic is also known as the primary buffer.
Singlemode cores are typically 8.3 or 9µm, while multimode cores are available in 50 and 62.5µm diameters.Ĭladding - A thin layer of glass that protects and surrounds the fiber core, reflecting light back into the core causing light waves to travel the length of the fiber. They combine an optical fiber cable and transceivers, eliminating the connector entirely.Ĭore - At the center of a fiber optic cable is a thin glass tube called a core that transports light pulses generated by a laser or light emitting diode (LED). If you are selecting cable for a 40GbE or 100GbE application, consider Active Optical Cables (AOCs). For example, if your 10G Ethernet switch has multi-fiber MTP ports, you'll need cables with the required number of fibers. In addition to fire rating, other cable jacket properties such as flexibility and strength under tensile load should be considered.įor more information on jacket materials and fire ratings, see Fiber Optic Cable Jackets.įiber optic cable terminations are typically dictated by the ports on your network equipment. If your cable will run through risers or plenum spaces, make sure the cable jacket is rated accordingly.
#LOOPBACK CABLE COLOR CODING CODE#
In the US, fire rating and jacket identification is defined by Article 77 of the National Electric Code (NEC). Refer to Table 2: Fiber Optic Cable Speeds and Lengths for guidance.Īll indoor fiber cabling must meet local fire codes. Note that MMF range depends on the OM rating of the cable. If data transmission speed or distance are key requirements, consider SMF. If you need to move a large amount of data over a relatively short distance (for example, less than 300 meters), OM3 MMF might be the best choice. multimode, focus on the connection distance and network speed dictated by the overall network design. For example, the price of a 3 meter LC-to-LC duplex SMF cable is about one US dollar more than the equivalent MMF cable.
Nowadays, the cost difference is not so significant. Multimode fiber (MMF) used to be the automatic choice for datacenters and corporate networks because it was less expensive than singlemode fiber (SMF).
If you need assistance in determining requirements or selecting pre-terminated or custom fiber cable, please contact us. Additional requirements will be driven by the needs of your specific application.
Once you have narrowed down your choices, you should also consider cost and future-proofing. Start by determining requirements for the following:
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