Outdoor fiber optic cable, simply used for outdoor fiber optic cable, belong to a kind of optical fiber cable, for the most suitable to use in outdoor so called outdoor fiber optic cable, it is durable, can withstand the freezing of weathering, the outer packing, which have some such as pressure, corrosion resistance, tensile mechanical properties, environmental characteristics.
Outdoor cable tensile strength is larger, protective layer is thick, and usually for armored (i.e. metal leather wrapped). Outdoor cables is mainly applied to buildings, and between the interconnection between remote networks.
Generally speaking, outdoor cable just filler, reinforcing member, jacket and so on use of different materials. Such as: outdoor fiber optic cable buried, should use armored cable. Aerial, with two or more optional root reinforcement of black plastic optical fiber cable outer sheath.
Outdoor cable because of its use of the environment is outdoors, it must have a waterproof function, generally used by the outer sheath is made of PE material, and its internal structure is generally divided into the central tube structure and layer twisted structure.
Outdoor fiber optic cable is a complete optical signal transmission lines of communication. By a number of fiber optic cable core composition in accordance with a certain way, outsourcing jacket, and some also cover the outer sheath.
Outdoor fiber optic cable consists of an optical fiber (glass as thin as a hair) and plastic casing and plastic sheath constituted maintenance, fiber optic cable is not gold, silver, copper and aluminum and other metals.
Outdoor optical cable laying
Communication cable since 70s application, has now developed into a long haul, local telephone relay, underwater and undersea communications and local area networks, private networks and other cable transmission backbone, and has begun to develop the access network to the user by the fiber to curb (FTTC), fiber to the building (FTTB) and so on to the fiber to the home (FTTH) development. For a variety of applications and environmental conditions, communications cable with aerial, buried fiber optic cable, pipelines, underwater, indoor installation, etc.
Aerial optical cable
Aerial cable is hung on pole using optical fiber cable. This way of laying can take advantage of the existing aerial light road, save construction costs and shorten the construction period. Aerial cables hanging in the pole, must adapt to a variety of natural environments. Aerial cables susceptible to typhoons, ice, floods and other natural disasters, the threat also vulnerable to outside influence and weaken their mechanical strength and other effects, so the failure rate is higher than the aerial cable and pipeline buried fiber optic cable. Generally used for long-distance two or level 2 of the line, cable lines for private networks or some local special location.
Direct Burial Fiber Cable
The cable outside a strip or wire armored, direct burial in the ground, requiring performance against external mechanical damage and prevent soil erosion performance. According to the different use of the environment and conditions for use of different sheath structure, for example, there are areas of Pest Insects and Rodents, to use a pest control rat gnawing of the cable sheath. According to the soil and the environment, the depth of buried fiber optic cable is generally between 0.8m to 1.2m. In laying, you must also pay attention to maintaining fiber strain within the limits allowed.
Duct Optical Cable
Pipe laying is usually in urban areas, pipe laying environment better, so the cable sheath are no special requirements, no armor.
Pipe laying laying before the next election and the length of the segment connecting point. Laying beside cited can use mechanical or manual traction. Do not exceed a towing cable to allow traction tension. Pipe materials can be produced based on the geographical choice of concrete, asbestos cement, steel, plastic tubes.
Underwater Fiber Optic Cable
Underwater fiber optic cable through the radiation in the bottom of rivers, lakes and the riverbank, etc. The fiber optic cable, fiber optic cable laying environment than this pipe laying, burying the condition much worse. Underwater fiber optic cable must be used wire or steel armored structure, retaining layer structure according to the hydrogeological conditions of rivers into account. For example, in stony soil, erosion and strong seasonal riverbed, cable suffer from wear and tear, Rally situation, do not only need thick steel wire armored, to use its double-armored construction methods should be based on river width, water depth, flow rate, etc. for the selected drawing riverbed. Laying underwater fiber optic cable buried fiber optic cable severe conditions than many, techniques and measures to repair the failure is also much more difficult, so the reliability requirements of underwater fiber optic cable buried fiber optic cable than high.
Submarine cable is underwater cable, but the laying of underwater cables environmental conditions more severe than normal, demanding the submarine cable system and its original life requirements in more than 25 years.