Usually, Optical fiber cables are divided into indoor optical cables and outdoor optical cables according to different natural environments. The center of the optical cable is the optical fiber. 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, so that the optical signal injected into the core is reflected by the cladding interface, making the light The signal propagates forward in the core of the fiber. Since optical fiber itself is very fragile and cannot be directly used in wiring systems, 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. Optical cable usually contains one or more optical fibers.
Features of indoor optical cables: Indoor optical cables have smaller tensile strength and poorer protective layer, but are relatively lighter and more economical. Indoor optical cables are mainly suitable for horizontal cabling subsystems and vertical backbone subsystems. Outdoor optical cables have greater tensile strength, thicker protective layers, and are usually armored. Outdoor optical cables are mostly used in building group subsystems and can be used in outdoor direct burial, pipeline, overhead and underwater laying and other occasions.
Features of outdoor optical cables: They are mainly composed of optical fibers (glass filaments as thin as hair), plastic protective sleeves and plastic outer sheaths. There are no gold, silver, copper, aluminum and other metals in the optical cables, and generally have no recycling value. Outdoor optical cables have greater tensile strength, thicker protective layers, and are usually armored (that is, wrapped in metal skin). Outdoor optical cables are mainly suitable for interconnection between buildings and remote networks.
Outdoor optical cable is a communication line that realizes optical signal transmission. A cable core is composed of a certain number of optical fibers in a certain way, 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 manner and are covered with a sheath, and some are also covered with an outer sheath to realize optical signal transmission.