Special Optical Cable Special purpose

Ribbon cable

A fiber optic cable that is machined by a plurality of single fiber fibers, which are colored, stacked into strips, and two times molded. There are two kinds of optical fiber, namely the encapsulation type and the side-viscosity type, the former can withstand transverse pressure, the latter thickness is thin. Each band can have 4, 8, 12 or 16 fiber. In-band fiber spacing is 0. 28mm (for 4, 8) and 0. 3mm (for 12 and 16), neatly arranged, the vertical direction of flatness, that is, deviation requirements, should not be greater than 30, 40, 50um (according to the number of optical fiber in the band), so as to facilitate the cluster (weld) continued. In-band optical fibers are used in an orderly manner to facilitate maintenance and subsequent recognition. The optical fiber belt is small in size, which can increase the density of optical fiber in the optical cable, and can make up a large number of cores, such as 320 to 3456 cores. Suitable for the current development of fast optical fiber access network.

All-media self-supporting optical cable

Referred to as ADSs (=all dielectric self-support) Optical cable, wherein the tensile strength of the element is not metal but aramid yarn and glass fiber reinforced plastic (FRP). Mainly used in strong electricity occasions, such as electric power and railway communication systems, at the same time, across the river or complex terrain, such as large span of the occasion. ADSs cable can be without power failure construction, resistance to electrical marks, temperature range wide.

Ground Wire Composite Cable

Referred to as OPGW (=optical Power grounded waveguide), also known as optical fiber overhead ground wire, electric transmission line in the ground wire contains for communication of optical fiber units. This kind of cable achieves the same, that is, the electrical and mechanical properties of the ground wire are not damaged by setting the optical fiber, the optical fiber unit should be properly protected without damage. Have lead skeleton type, stainless steel tube type and submarine cable type and so on.

Submarine cable

Cables laid on the seabed are used in shallow and deep-sea applications. The characteristics of this optical cable, one is to withstand a large hydrostatic pressure (10m per depth increase pressure of 1 tons.) and the drag force in the casting process, and the other is to prevent the hydrogen from invading the fiber. It has been proved that the hydrogen will cause the fiber to increase attenuation, and the third is the large span of the relay segment. The fiber units in the submarine cable are placed in the center of the cable and in the autocratic stainless steel tube. The pipe is wrapped around a steel wire with high strength arched structure. The steel wire layer is also covered with copper pipe, which is used for far supply, and makes the cable laying without micro/macro bending. Then squeeze out the outer sheath. It may also be fitted to prevent sharp damage, including shark bites. In China, Shanghai, Qingdao, Shantou has the ocean submarine cable landing.