Development of optical communication

After the breakthrough of foreign low-loss optical fiber in 1970s, our country started the research on low-loss optical fiber and optical communication from 1974, and developed low-loss optical fiber and semiconductor laser which can continuously emit light at room temperature in the mid-1970s. 1979, local telephone optical fiber communication test systems were built in Beijing and Shanghai respectively, which was only more than two years later than the first field test in the world. These achievements became a good start for China's optical communication research, and made China one of the few countries with the experimental section of optical cable communication system at that time. By the end of 1980s, the key technologies of optical fiber communication in China had reached the international advanced level.

Starting from 199 1, China no longer builds long-distance wired communication systems, but vigorously develops optical fiber communication. During the Eighth Five-Year Plan period, 22 optical fiber trunk lines and a large-capacity optical fiber communication trunk line transmission network with a total length of 33,000 kilometers were built. 1999 65438+ 10, China's first national first-class trunk line (Jinan-Qingdao) with the highest transmission rate DWDM built, which expanded the communication capacity of a pair of optical fibers by 8 times.

China attaches great importance to the research and development of optical communication devices. By arranging special topics in the national high-tech development plan, organizing technical research and tracking international advanced technologies, the research and development and industrialization of optical communication devices have been greatly promoted. With the gradual transfer of optical device industry to China, the infrastructure construction of optical communication industry is further accelerated, and China has become an important production and sales base of optoelectronic components in the world.

Optical communication devices are the basis of building optical communication systems and networks. The development, upgrading and popularization of high-speed optical transmission equipment, long-distance optical transmission equipment and intelligent optical network all depend on the technical progress of optical communication devices and the support of product upgrading. Therefore, the update and upgrade of communication technology will promote the continuous development and progress of optical communication devices.

In 20 10, the devices made in China accounted for more than 25% of the global market share; The market share of China optical devices in the global market has also increased from 17% in 2008 to about 26% in 20 10, and the market scale has reached 9.3 billion RMB, with a year-on-year growth rate of 30%.

The number of optoelectronic device manufacturers is relatively large, with more than 250 manufacturers producing optoelectronic devices worldwide. The whole industry still belongs to a completely competitive market. With the withdrawal of small and medium-sized enterprises and the merger and acquisition of industries, the market concentration of industries is rising, and the competition intensity of industries is slowing down. However, domestic enterprises have to face the competition from local enterprises and bear the competitive pressure from foreign enterprises, and the overall competition is fierce. With the promotion of broadband China strategy, the three major telecom operators in China have accelerated the pace of building an optical network city, and China's optical communication industry has shown a high-speed growth trend.

In terms of domestic optical fiber and cable, the market demand for optical fiber increased rapidly in 20 12 years, which improved the fundamentals of the optical fiber industry. The weak balance between supply and demand in the industry as a whole provides a strong support for the price of optical fiber and a basic guarantee for the promotion of industry profits. At the same time, all the major manufacturers in the industry realized the large-scale independent production capacity of optical fiber preforms in 20 12, which greatly improved the profitability of these optical fiber enterprises.

In terms of optical network system equipment, the upsurge of FTTH, NGB and two-way transformation under the situation of triple play will release a large number of optical communication equipment requirements for a long time to come. The convergence of the three networks will stimulate the investment of radio, television and telecom operators in the construction of optical fiber networks. The demand for PON equipment and ODN will increase in the domestic market, and the upgrading of PTN and OTN networks will also drive the demand for corresponding equipment to rise.

In terms of optical devices and optical modules, as the market continues to heat up, the investment in the optical device industry continues to expand, and a large number of optical device enterprises have emerged in China. The state has increased its support for the optical communication industry, and the proportion of enterprises investing in research and development has increased, which is undoubtedly conducive to the long-term development of the industry. Under the premise of triple play, the investment cost of optical devices is rising. Industry analysis predicts that with the further improvement of integration and intelligence of optoelectronic devices, optoelectronic devices will account for more than 30% of the cost of optical transmission equipment in the future.

Optical communication equipment is listed in the catalogue of strategic emerging industries.

In order to implement the State Council's decision on accelerating the cultivation and development of strategic emerging industries, and better guide all departments and regions to carry out the work of cultivating and developing strategic emerging industries, the Development and Reform Commission, together with relevant departments, organized and compiled the Guiding Catalogue of Key Products and Services of Strategic Emerging Industries. The Catalogue covers 7 strategic emerging industries, 24 key development directions, 125 subdivision directions, and ***3 100 subdivision products and services. The subdivided products and services include 950 products and services related to the next generation information technology industry, including optical communication equipment in the next generation information network industry.

Optical communication equipment includes optical fiber, G.657 optical fiber for FTTx, G.656 optical fiber for broadband long-distance high-speed large-capacity optical fiber transmission, photonic crystal fiber, and rare earth-doped optical fiber (including ytterbium-doped fiber, erbium-doped fiber, thulium-doped fiber, etc.). ), laser energy transmission fiber, and new optical fiber with some special properties, including plastic optical fiber and polymer optical fiber.

Optical fiber access equipment, passive optical network (PON), optical line terminal (OLT), optical network unit (ONU), wavelength division multiplexer, etc.

Optical transmission equipment, ultra-large capacity (1.6Tb/s and above) dense wavelength division multiplexing (DWDM) equipment with line speeds of 40Gbit/s and 100Gbit/s, reconfigurable optical differential multiplexing equipment (ROADM) and optical cross-connect (OXC) equipment for wavelength division multiplexing systems, and OTN optical transmission with large capacity and high rate.