Erected three decades the development of optical fiber and cable telecommunications industry in ligh

Optical Fiber and Cable Three decades of development, is to build China's telecommunications transmission backbone of three years.

  Scale has become From yesterday's eight vertical and eight horizontal transmission of a new arterial route today and each fiber-optic cable backbone are all cast. According to Ministry of Information Industry promulgated the "development of communication industry in 2006 Statistical Communique" in 2006, the total length of fiber cable in China reached 4.259 million km of skin, the total length of the cable core is core to 88.934 million km.

1976, the United States launched the world's first practical optical fiber communication system, beginning the prelude to the history of optical communications. In China, the development of optical fiber and cable industry is also with the world, from 1978 to 2007, just experienced three decades. Currently we have built a world-class fiber optic network covering both urban and rural, and there are constantly building new lines.

Three decades of accumulated not only to build a transmission backbone, but also for our industry to create a huge scale. Data show that in 2005 China produced a total of 17.5 million sale of cable core kilometers, accounting for nearly 30% of global production, ranking first in the world, China has become the world's major optical fiber and cable production base. In 2006, sales reached 20 million core km of optical cable. Of these, 4.6 million core km long flight, prosper core 4.08 million kilometers, 2.8 million core km of war, transit, through light, Wing Ding, Olympic stars are up to 1.5 million kilometers above the core, into health, Fortis, Huiyuan, idiopathic are more than 100 million core km. Power had to accelerate the pace of

Significant achievements, but we need clear, does not mean a huge industry, power industry. Preform core optical fiber and cable technologies, there are only a few companies control the domestic demand for optical fiber preform business relies mainly on imports. According to Customs statistics, in 2006 imported from Japan to China preform weight of 558.3 tons, accounting for more than three-quarters of total demand preform. This situation, Fiberhome cable Geng, general manager, said: "Domestic enterprises have already had some rods capacity, but rods technology, raw material supply, cost control, industrial scale and so also with the international advanced level big gap between the overall pattern of fiber production to 'buy bar tow the boat'. "

Authority under the international consulting firm forecast for the next 3 to 5 years, the demand for optical fiber 8% each year? 10% growth. Faced with this increasing demand, domestic preform technology even more urgent to promote industrialization.

Geng said: "The research and development of intellectual property rights of optical fiber preform manufacturing technology and industrialization, to break down foreign communications giants of the optical communications market, China's monopoly of train communications industry has a core competence significance. "

Achievement is the beginning Three decades is a success, is a start. At a time when a new generation of optical access transmission network and an important period of building the new business environment changes and the development of optical communication technology will make the new fiber-optic cable requirements.

Optical network construction of China Telecom that the main promoter, the future backbone of the fiber optic cable requirements are lower PMD coefficient, a reasonable dispersion coefficient and effective area, expand the available band, lower and more stable transmission loss and so on.

Correspond to these requirements are long-distance transmission networks and other new submarine construction. In fact, not only long-distance backbone network, the same for metro and access networks with the new requirements.

Zhang Chengliang China Telecom Beijing Research Institute said in talking about the demand for MAN, now G.652D fiber is the best option in the future should be concerned about G.655E, G.656, and other new optical fiber. For FTTH, FTTH problem is cost and macro bending loss, the current selection from G.652 fiber bending properties were superior products, while actively tracking the development of new type of G.657 fiber, the time is ripe to introduce the current web application.



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