Optical cable is composed of cable core, reinforced steel wire, filler and sheath. In addition, there are waterproof layer, buffer layer, insulated metal wire and other components as needed.
Optical cable consists of three parts: reinforced core and cable core, sheath and outer sheath. There are two types of cable core structures: single core type and multi-core type: single core type has two types: solid type and tube bundle type; multi-core type has two types: strip type and unit type. There are two types of outer sheath: metal armored and non-armored.
Extended information:
Parallel hanging: two hanging at the same time during installation.
Attachment: laid according to primary attachment and secondary attachment.
Additional installation: erecting lines for capacity expansion. Self-supporting optical cables are more expensive, but are not widely used in China.
Types
1. According to different transmission performance, distance and purpose, optical cables can be divided into user optical cables, local optical cables, long-distance optical cables and submarine optical cables.
2. According to the types of optical fibers used in optical cables, optical cables can be divided into single-mode optical cables and multi-mode optical cables.
3. According to the number of optical fiber cores in the optical cable, optical cables can be divided into single-core optical cables, dual-core optical cables, etc.
4. According to the different configuration methods of reinforcements, optical cables can be divided into central reinforcement component optical cables, dispersed reinforcement component optical cables, sheath reinforcement component optical cables and comprehensive outer sheath optical cables.
5. According to different transmission conductors and medium conditions, optical cables can be divided into metal-free optical cables, ordinary optical cables, and comprehensive optical cables (mainly used for railway dedicated network communication lines).
6. According to different laying methods, optical cables can be divided into pipeline optical cables, direct buried optical cables, aerial optical cables and underwater optical cables.
7. According to different structural methods, optical cables can be divided into flat structure optical cables, layered optical cables, skeleton optical cables, armored optical cables and high-density user optical cables.
Baidu Encyclopedia-Optical Cable