Fiber Optic Cable UC 8x OS2 PE N164.183 Nexans

Fiber optics is one of the high-speed data transmission environments in network equipment. Fiber optic cable has many advantages over conventional copper and coaxial cables. Fiber optic cables have higher tensile strength, lower weight and smaller size, and the maximum amount of these wires can be placed in the least possible place. Fiber optic cables used in telecommunications are generally classified into two groups:

Multi Mode and Single Mode cables.

Multi Mode cables are called OM for short and Single Mode cables are called OS. The standards (ISO / IEC 11801) and (EIA / TIA) define four models of Multi Mode cable called OM1, OM2, OM3 and OM4 and two types of Single Mode cable model named OS1 and OS2.

What is the difference between OM and OS cables?
The main difference between OM and OS cables is in their core diameter, as OM cables have a much larger core than OS cables. There are generally two types of OM cables in terms of core diameter, one is 50 microns in diameter and the other is 62.5 microns. This larger core helps to increase the light collection capacity of OM cables compared to OS cables. In practice, the larger size simplifies the connection core and allows the use of low-cost light sources such as LEDs and lasers (VCSELs) operating at 850 and 1300 nm.

OS cables used in telecommunications mainly operate at wavelengths of 1310 or 1550 nm and require expensive laser sources.

Compared to OS cables, OM cables have a lower bandwidth product (or MHz.km) because of the larger core size, which supports more than one propagation mode, and modal dispersion at the same time. ) increase.

LED light sources also contain a wide range of wavelengths that propagate at different speeds and cause color scattering, which is another factor in reducing the useful length that can be used in OM fiber optic cables. In contrast, lasers used as a source for OS cables produce more coherent light in the uniform or narrow wavelength range.