Cable Industry "October Reformation" – market conditions, optical cable – HC Network electrical industry
By the world market has affected the overall downturn in recent years, China's optical fiber Cable Market has been hovering in the low, market prices are falling, optical fiber and cable business in difficult circumstances.
, However, to reverse this situation Quefei overnight. Fostering technological innovation in our core fiber optic cable Competition Edge is important.
Challenge From the future growth of China's optical fiber market as far mainly concentrated in the access network, long distance and local transport network to supplement and perfect Next Generation Network ( NGN ) Of the building and the construction of 3G networks in areas such as optical fiber and cable and the current technologies and products that not enough applications to meet those needs. Thus, to catch up with the world's optical fiber technology to maintain the basic synchronization, optical fiber and cable business in China is still a lot of things to do, great potential.
Addition, the world is still expanding optical fiber and cable technologies, including raw materials for production of optical fiber cable technologies, such as ointments and other chemical fiber and optical fiber materials in the field of technological development is very active.
In recent years, due to the optical fiber and cable market, the continued low prices of raw materials to make optical fiber and cable-specific market prices significantly lower number of foreign suppliers of raw materials out of the Chinese market, the domestic raw material suppliers to gradually increase its market share. However, the low prices have also hindered the development of the world's new higher-quality raw materials and products used in China's optical fiber and cable products, long-term development of China's optical fiber and cable industry will adversely affect development.
Will be carried out in the end innovation
Optical fiber technology is an evolving technology, its applications continue to grow. In recent years, optical fiber and cable business of technological innovation has been greatly improved, optical fiber and cable in the field of patent applications has been significant growth and a considerable number of invention patents.
Survey, only the Optical Fiber and Cable Co., Ltd. patent applications in recent years to nearly 70, which is nearly 30 patents; other companies are already in the field of optical fiber and cable manufacturing for nearly 30 patents, and assume a number of national torch project development. Nevertheless, some experts also stressed that many of our cable products in oversupply, while some areas in China still a considerable portion of cable products to a large number of imports, China's current fiber-optic cable technology, especially optical fiber preform technology still faces many serious challenge.
Fortunately, some of China's optical fiber and cable companies have clearly recognized this and have done a lot of work and made great progress. If the Zhongtian Technology and Yangtze Optical Fiber and Optical Fiber Co., Ltd. Zhongtian Technology joint venture, through technological improvements and process optimization, the original drawing an average bar would need to shutdown, and now has been able to pull 20 consecutive rods, speed from 1000 m / min up to 1400 m / min, capacity utilization increased from 85% to 96%; with research institutes, institutions of higher education to go together industry, academia, and research, the combination of road, almost simultaneously with the highest international levels to develop with technical superiority and market prospects of G652C, G652D fiber and fiber to the home (FTTH) with anti-bend single mode fiber.
PMD future prove safety PMD performance fiber networks is the main current problems in the production process to optimize the fiber's PMD is the industry trend. Meanwhile, the polarization mode dispersion (PMD) is limited to high-speed optical transmission networks, long distance, high-volume direction of the main factors, so more and more of the network Operation Business concerns. PMD are many reasons leading to increase, such as the asymmetric geometry of fiber, optical fiber by the external asymmetry will affect the single-mode fiber in two polarization modes with different rates of spread, resulting pulse signal to split or wider, thereby limiting the high rate of information dissemination. Therefore, it is the system or data network Mold Proposed system, the PMD value of fiber requirements are very demanding.
In the past 10 years, experts on the PMD for a lot of research and experiment on how to reduce the fiber PMD done a great job. For the PMD There are two main ways to improve, the first is to increase the refractive index and stress fiber symmetry, the key to this approach is to control the existing optical fiber production technology to ensure the production of optical fiber has a better geometric symmetry and helps reduce the stress suffered by optical fiber. The second method is to reverse the optical fiber manufacturing process, adding to the control of man-made fiber birefringence distribution.
This method in the 20th century began to be used on behalf of optical fiber 90 years of production, but also proved to be an effective way to reduce the fiber PMD. Drawing directly reverse the technology is an effective way to reduce the fiber PMD, this method has now been applied in industrial, real proof of the use of this technology produced fiber PMD performance has been very high, fully meet the current network development needs. [Popular Keywords]: Market Cable Comment Large In Small
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