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Structure of photoelectric composite cable
The world's first photoelectric composite cable is a photoelectric composite cable developed by Japan's Sumitomo Electric Company in 1978 for submarine photoelectric transmission. The structure of this type of optical cable is not complicated. Generally, the core of the optical cable and the core of the transmission line composed of single-mode or multi-mode optical fiber and other materials to protect the optical fiber are distributed around the reinforcing core and wrapped in the water-blocking bag at the same time. The transmission line core and the optical cable A filling rope is arranged between the cores, a polyester tape is outside the water-blocking belt, and a polyethylene (or flame-retardant) protective cover is finally wrapped.
Optoelectronic composite cable type
According to actual use, photoelectric composite cables can be divided into pipeline type, overhead type, direct buried type, indoor wiring type, special purpose type and many other types. -General duct type, overhead type, direct buried type, indoor wiring type photoelectric composite cable is mainly used outdoors, which can provide power transmission and signal transmission for communication outdoor macro stations; indoor wiring type photoelectric composite cable is mainly used indoor Communication indoor distribution stations provide power transmission and signal transmission; among the special types of photoelectric composite optical cables, the most widely used submarine photoelectric composite cable is mainly used in submarine optical cable projects.
Since there are both optical fiber cores and power cores in the photoelectric composite cable, there are many different models. The number of fiber cores of the optical cable is generally 2-144 cores, and the cable voltage range is from 48V to 110kv. For indoor applications, it is generally necessary to use a photoelectric composite cable with a voltage of 48v; and for outdoor remote or macro stations to provide access. It is generally necessary to use a photoelectric composite cable with a voltage range of 280v to 750v; and submarine optical cable 110kv voltage photoelectric composite cables are generally used in construction. It can be seen that the voltage range of the most widely used photoelectric composite cable belongs to the category of strong electricity or high voltage.
Advantages of photoelectric composite cable
(l) The outer diameter is small, the weight is light, and the space is small (usually a series of problems that can be solved with multiple cables, here can be replaced by a composite cable);
(2) It has superior bending performance and good side pressure resistance, and is convenient for construction;
(3) Provide a variety of transmission technologies at the same time, with high adaptability and scalability of the same equipment, and a wide range of product applications;
(4) Solve the problem of equipment power consumption in network construction (avoid repeated deployment of power supply lines).