What is the difference between indoor fiber optical cable and outdoor fiber optical cable?

Fiber optic cables are divided into indoor fiber optic cables and outdoor fiber optic cables according to different natural environments. The center of the optical cable is an optical fiber, and the center of the optical fiber is usually a core made of glass. The core is surrounded by a glass envelope with a lower refractive index than the core, in order to make the light signal injected into the fiber core reflected through the cladding interface, the light signal propagates in the fiber core forward. Because the optical fiber itself is very fragile and cannot be directly applied to the wiring system, it is usually bundled with a protective shell on the outside and a tensile wire in the middle. This is the so-called optical cable, which usually contains one or more optical fibers.

The characteristics of indoor optical cable: The tensile strength of indoor optical cable is small, the protective layer is poor, but it is relatively lighter and more economical. Indoor optical cable is mainly suitable for horizontal wiring subsystem and vertical backbone subsystem. Outdoor fiber optic cables have higher tensile strength, a thicker protective layer, and are usually armored. Outdoor optical cables are mostly used in the subsystems of the building complex, and can be used for outdoor direct burial, pipeline, overhead, and underwater laying.

Features of outdoor optical cable: It is mainly composed of optical fiber (thin glass filament such as hair), plastic protective sleeve and plastic sheath. There is no metal such as gold, silver, copper and aluminum in the optical cable, and generally has no recycling value. Outdoor optical cables have higher tensile strength, a thicker protective layer, and are usually armored (that is, wrapped in metal skin). Outdoor optical cables are mainly suitable for interconnection between buildings and between remote networks.

Outdoor optical cable is a communication line that realizes optical signal transmission. The cable core is composed of a certain number of optical fibers in a certain manner, and is covered with a sheath, and some are also covered with an outer sheath.

Indoor optical cable is a communication line in which a certain number of optical fibers form a cable core in a certain way, and are covered with a sheath, and some are also covered with an outer sheath to realize optical signal transmission.

Indoor optical cable: yellow single-mode optical cable, orange multi-mode optical cable, aqua-green 10G optical cable.

Outdoor optical cable: Generally, it has a black outer sheath with a relatively hard texture. It is also to consider the role of ultraviolet radiation and corrosion resistance.


Post time: 2021-02-18

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Lomoveishiy – Finland

I needed those to connect my PC on the third floor to have internet access in that room, and ISP installed their modem on the first floor only. After dropping fiber patch cables, plugged in all cables into these media converters at both sides, and link came up instantly. Was much easier than I thought!

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Great experience – units worked straight out of the box – just needed plug in cables and we were done. I also like the possibility to enable jumbo frames, while we do not have a need for this feature at the current moment it’s great to have this option.

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