Talking About The Development Status Of Fiber Optic Cable

The Ordinary Fiber Optic

the ordinary single-mode fiber is the most commonly used fiber optic. With the development of optical communication systems, optical repeater distance and a single wavelength channel capacity increases G.652.A optical fibers, there may be further optimized, the performance in the low attenuation coefficient of the 1550rim District has not been fully utilized and fiber minimum attenuation coefficient and the zero dispersion point is not in the same region. The cutoff wavelength of the meet the ITUTG.654 provisions displacement single-mode fiber and dispersion-shifted single-mode fiber G.653 provisions to achieve this improvement.

Core network fiber optic cable

China has in the trunk (including the full adoption of the national trunk, the province of the trunk and regional trunk) fiber optic cable, multimode fiber has been eliminated, all the single-mode fiber, including G.652 fibers and G.655. G.653 fiber in our country has adopted, but will not develop in the future. G.654 fiber optic because it can not significantly increase the capacity of fiber optic systems, have not used it in China's terrestrial fiber optic cable. The trunk cable using discrete fiber, optical fiber ribbon. The trunk cable is mainly used for the outdoors, these cables have been used sleeve Stranded skeleton structure, the current has stopped.

Access network, fiber optic cable

Short distance from the fiber optic cable in the access network, multi-branch and drop frequently, in order to increase network capacity, is to increase the fiber count. Pipeline in the city, due to limited pipe diameter, at the same time to increase the number of fiber core to increase the fiber optic cable fiber container density, reducing the cable diameter and weight, is very important. Access network using G.652 single mode fiber optic and G.652.C low water peak single-mode fiber. The low water peak single-mode fiber for dense wavelength division multiplexing, in China has a small amount of use.

Indoor fiber optic cable

Indoor fiber optic cable is often required for the transmission of voice, data and video signals. And the head may also be used for telemetry and sensor. International Electrotechnical Commission (IEC) referred to in the fiber optic cable classification of indoor fiber optic cable, I believe that should include at least Bureau of cable and wiring of two major fiber optic cable. Office cable laying on the central office or other telecommunications room, laying close orderly and relatively fixed position. Integrated wiring cable laying on the client's indoors, mainly by users, and therefore its vulnerability should be higher than the fiber optic cable more rigorous consideration.

Communication cable power lines

The fiber optic is a dielectric fiber optic cable can also be made ​​to all media, no metals. This all-dielectric fiber optic cable will be the power system the best lines of communication. For all dielectric fiber optic cable laid by the power poles Road, there are two structures: All Dielectric Self Supporting (ADSS) structure and for the overhead ground wire of the winding structure. ADSS fiber optic cable because you can separate deployment, wide, has been widely used in the current transformation of China's electric power transmission system. China has been able to produce a variety of ADSS fiber optic cable to meet the market needs. However, the product structure and performance, such as ambition the number of cable structure, cable creep and arc resistance properties, as well as to be further improved. The recent demand of the ADSS fiber optic cable in the country, is a popular products.

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