Optical fiber communication technology status and development trend

Abstract: The fiber optic cable communications in the use of more than 20 years of history, this history is the history of optical communication technology and the development of optical fiber and cable history. The loss of optical fiber communication because of its low transmission frequency bandwidth, large capacity, small size, light weight, resistance to electromagnetic interference, crosstalk, etc. is not easy, much favored by the industry to develop very rapidly. Currently, optical fiber cable has been wired into all areas of communications, including posts and telecommunications, radio communication, power communication, oil and communications, and military communications. This paper reviews the status of optical communications Research and development.

Keywords:: optical fiber communications network access network core all-optical soliton communication

optical fiber communication network depends on the development of optical communication technology. In recent years, optical fiber communication technology has developed rapidly, new technologies are emerging, it has greatly improved communication capabilities and application range of optical fiber communications has expanded.


1 status of the development of fiber optic cable fiber

1.1 ordinary single mode fiber is the most commonly used fiber. With the development of optical communication systems, optical distance relay and a single wavelength channel capacity increases, G.652.A optical fibers also may be further optimized, and in the area of low attenuation coefficient 1550rim not been fully utilized and the fiber the lowest attenuation coefficient and the zero dispersion point is not in the same area. Comply with the provisions of the cutoff wavelength ITUTG.654 displacement G.653 single-mode fiber and in accordance with the provisions of the dispersion shifted single-mode fiber to achieve such improvements.

1.2
core network of fiber optic cable in trunk (including the national trunk lines and local lines in the province) on the comprehensive use of fiber optic cable, including multi-mode fiber has been eliminated, all with single-mode fiber, including G.652 G.655 optical fiber and optical fiber. G.653 fiber has been introduced in China though, it will be no more development. G.654 fiber because it can not be substantially increased capacity of fiber optic systems, it is not our land fiber optic cable used. Route the fiber cable in the discrete, non-use of optical fiber ribbon. Trunk cable is mainly used outdoors, in the cable, the sleeve was used Stranded and skeletal structure, has been suspended.

1.3
access network cable from the cable access network in the short, many branches, drop frequently, in order to increase network capacity, often to increase the number of fiber core. Especially in the city pipes, the diameter of the pipe is limited, increasing the number of fiber core and increase container density fiber optic cable, cable diameter and weight reduction is very important. Access network using G.652 single mode fiber and G.652.C low water peak single-mode fiber. Low water peak single-mode fiber for dense wavelength division multiplexing, is currently in China has a small amount of use.

1.4 cable indoor optical cable
often need to be used for both indoor voice, data and video signal transmission. And projects may also be used for telemetry and sensors. International Electrotechnical Commission (IEC) under the category of indoor fiber optic cable fiber optic cable, I believe that Council should at least include cable and fiber optic cabling with two parts. Bureau of cloth on the central office with a cable or other telecommunications equipment room, laying close orderly and relatively fixed position. Integrated wiring cable cloth on the client's room, mainly used by the user, the vulnerability of its Board with the cable than there should be more stringent consideration.

1.5 power lines in the optical fiber communications cable is a dielectric
, fiber optic cable can also be made whole media is no metals. This all dielectric fiber optic cable would be the ideal power system communication lines. Power poles Road for laying fiber optic cable all the media, there are two structures: the all-dielectric self-supporting (ADSS) for the overhead structure and to line the winding structure. ADSS fiber optic cable laying their ability to separate, wide, in the current transformation of China's power transmission system has been widely used. China has been able to produce a variety of ADSS fiber optic cable to meet the market needs. But in terms of product structure and performance, for example, the number of fiber optic cable structure ambitions, cable creep and resistance to arc performance, etc., to be further improved. ADSS fiber optic cable in the domestic demand for greater near-term, is a popular product.

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