The optical fiber unit structure and technology

In the OPGW cable, the fiber unit is extremely important subject. From the late 1970s to early 2000s, OPGW cable structure has undergone great changes, the change is rooted in the OPGW cable in the use of continuous improvement of the problems, and improve the structure of the main unit to improve the fiber can be said of the fiber's cell structure has undergone the baptism of the current stainless steel tube fiber unit is believed to be the current best of the OPGW fiber optic cable unit. The following table illustrates different representative OPGW cable's fiber unit, from a technical and objective description of its performance characteristics.


By short-circuit current in the aluminum, the heat dissipation of the state

"Aluminum frame + aluminum" in Optical unit: The fiber unit structure is by coating (coating temperature materials) in the aluminum strands of fiber directly to tank + tubes to form the skeleton, and generally more compact fiber-optic package structure of the fiber. The structure of the optical fiber unit has a strong lateral pressure, and the "core + aluminum tube layer stranded cable," compared to the fiber unit, the use of optical fiber coating material temperature, high temperature in the aluminum, the optical phenomenon by the temperature have been greatly improved. However, the basic optical fiber unit formed by the aluminum in the OPGW cable are short-circuit current shocks, aluminum heat generated is still sealed in aluminum tubes, the temperature effect on the fiber there is always risk. In the short-circuit current under the impact of causing optical fiber and optical transmission performance broken down event has occurred in southern China. As follows: In the short-circuit current impact, fiber-optic distributed temperature distribution unit.http://www.chinaopticcable.com