Atomic energy, semiconductor, computer and laser technology are considered as the four great inventions of the 20th century. In the last century, the first three have been fully developed. Therefore, people often say that the 21st century is the century of light. Photoelectronics technology is one of the core technologies to promote the development of the world's most advanced science and technology. Many people predict that the photoelectronics industry will become the largest industry in the 21st century.

       China's Deductive Development "Acceleration"

       Photoelectronics can be divided into information photoelectron, energy laser, photoelectric display, biomedical photon, entertainment photoelectricity and military photoelectricity. Photoelectronic devices are widely used in long-distance and large-capacity optical fiber communication, optical storage, display, photon imaging, optical scanner, optical information processing, industrial laser processing, laser medical and military detection, weapons and equipment, and are expected to play an important role in future optical computing.

        In the past 20 years, the optoelectronic industry has been the fastest growing industry in the world, mainly distributed in Europe, the United States, Japan, China, Singapore, Russia, Israel, Korea and other countries. Japan was originally the fastest developing country of the optoelectronic industry, and in recent years it has been gradually catching up with China's rapid development. In the 21st century, the optoelectronic industry is moving from embryonic stage to growth stage. With the deepening of R&D, the global optoelectronic industry is developing at an alarming speed, with huge market potential, or will become a new level of economic growth in the entire information industry.

       In recent years, photon information, laser processing, Biophoton and other major areas have shown a rapid growth trend. It is estimated that by 2020, the global market of optoelectronic technology industry will exceed 700 billion US dollars. China has surpassed Japan to become the world's largest optoelectronic market, accounting for nearly 27% of the market share, while Japan has only about 15% (excluding overseas production). It should be noted that India's optoelectronic industry is the fastest growing country in recent years.

      Optical Communication: Optical Chips Become Upgrading Barriers

      Optical and electronic information technology also plays a fundamental supporting role in the development of modern society. The construction of optical fiber communication network, the application of 4G and 5G technology provide a basic information superhighway for modern society. The application of technology represented by industrial Internet and Internet of Things promotes the intelligent transformation of infrastructure, and forms a network space of interconnection of all things, human-computer interaction and integration of heaven and earth. It provides a necessary basis for the emergence of new technologies and industries.

      Optical fiber and communication applications are the largest part of Optoelectronics development and the pillar of modern communication industry. In fact, the rapid interconnection promoted by optical fiber network has not been developed for a long time in China, but it has been rapidly popularized to meet the needs of the people. Therefore, there is a huge demand for optical communication materials and devices. In addition to fiber optic cables, there are chips, optical active devices, optical passive devices, optical modules and subsystems, as well as upstream semiconductor, packaging, testing equipment, etc.

       The driving forces of 5G and other factors have made the prosperity of optoelectronics industry continue to rise. But throughout the entire tourism and communications industry, although the overall strength of the industry is leading, but the development is extremely uneven, upstream core devices, high-end chips are missing. As the main part of the value chain of optical communication, optical chips lack the research and development strength of high-end chips. The short board of the industry will become the biggest obstacle to the upgrading of the industry. The lack of high-end chips makes our main equipment manufacturers rely heavily on foreign countries. Therefore, the focus of future industrial upgrading will be on the high-end technology research and development of optical chips.

       Laser Manufacturing Demand Power Photoelectronics Adding New Highlights

      As an important field of optoelectronic technology, the laser market has been boosting in recent years, showing a good growth momentum.

      The most prominent application of energy laser is laser processing and manufacturing. The good development space has attracted the attention of many European, American and Chinese optoelectronic enterprises and joined them. In recent years, China's laser equipment continues to expand rapidly. Small and medium power lasers are mainly used in light industrial manufacturing such as electronics, ceramics, glass, hardware, textiles, automotive parts and components, while high power lasers are generally used in sheet metal processing, large-scale mechanical manufacturing, petrochemical, aerospace, mining machinery, rail locomotive and other heavy equipment manufacturing.

      In micro-fabrication, especially the localization of ultraviolet laser and ultrafast laser, the cost is greatly reduced. Precision laser equipment has also increased dramatically in the past two years, especially in the processing of semiconductor materials, micro-cutting and micro-welding of mobile phone parts, and processing of solar cells. Macro-processing, the future is not only simple steel plate cutting, there will be more and more complex requirements such as kitchen utensils, elevators, household appliances, cabinets, pipes, elevators, etc. In addition, modern manufacturing industries such as automobiles, aerospace, rail locomotives, shipbuilding, etc. are increasingly demanding automation and intelligent production mode, and the demand for laser equipment is also growing.

       Important "Tools" for Biomedical and Defense Applications

       Photon applications in biomedical treatment have attracted much attention in Europe, the United States and Japan, including medical imaging, medical analysis, minimally invasive surgery, photon cosmetology, optical scanning, diagnosis, component analysis and other applications, which are of great help to the progress of current medical development. For example, OCT, optical coherence tomography (OCT), myopia surgery with excimer laser or femtosecond laser, photon skin rejuvenation instrument and minimally invasive surgery with ultrafast laser are widely used.

        Military applications of Optoelectronics in lidar, infrared detection, communications and fire