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The retreat of light into the copper to ensure that the optical fiber cable industry demand remains high China's optical fiber and cable industry has risen with the development of national communications. Optical fiber cables have applications in the communications backbone network, metropolitan area network, and access networks. In recent years, the total mileage laid has steadily increased. The average annual increase of 20% . We believe that with the increasing demand for network bandwidth in China, Guangjin Copper Retreat will become a major trend, which will ensure that the growth momentum of the industry can continue in recent years. At present, China's broadband penetration rate is calculated at 3.4 people per household, which has reached 27% . However, China's broadband transmission speed has always had the problem of [ broadband is not wide " . This is due to the oligopoly in the domestic broadband operation industry, 3G The large investment in capital consumption, the limited IPTV services, and the slower integration of operators have resulted in a slowdown in access network investment and other factors. As a result, the average broadband speed is only 600kbps, 1.7Mbps significantly behind the average level of the world. According to Speedtest's statistics, China's average speed of access to the Internet ranked 81st in the world, ranking equal to the Chinese men's soccer team. At present, the broadband technologies commonly used in China are xDSL access and Cable coaxial access. Due to the physical limitations of the twisted-pair copper wires, the DSL transmission bandwidth is inversely proportional to the transmission distance. To increase the speed of broadband access, it is necessary to shorten the distance the signal travels in the copper cable. The FTTC , FTTB , FTTH and other methods can be used to achieve different application scenarios. In short, low-loss, high-bandwidth fiber networks need to be as close as possible to users. This will allow the access network to significantly increase the demand for fiber. At present, the valuation of the optical fiber and cable industry is roughly between 20-30 times. Taking into account the decline in fiber prices in the second half of the year, the gross profit decreased, partially offsetting the increase in sales. Give the industry overall holding rating. It is advisable to pay close attention to companies that have acquired optical fiber preform technology, such as Hengtong Optoelectronics and Zhongtian Technology.

At present, with the continuous development of the domestic communication industry, optical fiber communication has entered the practical stage, and the scope of application is becoming wider and wider. At the same time, more and higher requirements are put forward on the optical fiber connector, and its main The development direction is that the appearance is miniaturized, the cost is low, and the performance requirements are getting higher and higher. The following is a detailed explanation of the fiber optic quick connector embedded optical fiber and non-pre-embedded (straight-through), optical fiber jumper, pigtail, between the difference. The difference between embedded fiber optic quick connector and straight-through The fiber optic quick-connect connector uses two technologies: pre-embedded fiber and non-embedded (straight-through) fast connector fiber. The main difference is in the connection point and connection method: (1) Connection point setting The connection point of the embedded fiber is set inside the connector, the pre-embedded fiber has a preset matching liquid, and the non-embedded (straight-through) fiber connection point is on the surface of the connector, and the matching liquid is not preset, and is directly connected to the target fiber through the adapter. (2) Connection method The fiber optic quick-connect connector inserts and fixes the fiber into the pin and polishes the surface of the pin to achieve alignment in the coupling tube. The outer components of the pins are made of metal or non-metal materials. The butt end of the pin must be ground and the other end typically uses a bend limiting member to support the fiber or fiber optic cable to relieve stress. The coupling tube is generally made of two semi-synthetic, fastened cylindrical members made of ceramic, or bronze, and is equipped with a metal or plastic flange to facilitate the mounting and fixing of the connector. In order to align the fiber as precisely as possible, the processing precision of the pin and the coupling tube is very high. There is no embedded fiber and matching paste inside the straight-through fiber quick connector device. After the fiber is clamped and clamped, the end face of the fiber can be inspected with a magnifying glass to avoid the occurrence of excessive fiber connection loss. The axial belt positioning mechanism does not advance the fiber axially during the clamping process. The difference between fiber jumpers, pigtails, and fiber connectors (1) The fiber jumper is used to make the jumper from the device to the fiber-optic wiring link. It has a thick protective layer and is generally used for the connection between the optical transceiver and the terminal box. (2) The pigtail is also called the pigtail line. Only one end has a connector, and the other end is a broken end of a fiber optic cable core. It is connected to the core of other optical cables by welding, and is often found in the fiber terminal box for connecting the optical cable. With fiber optic transceivers (couplers, jumpers, etc. are also used). A fiber optic connector is a detachable (active) connection between an optical fiber and an optical fiber. The two ends of the optical fiber are precisely butted together so that the optical energy output from the transmitting optical fiber can be coupled to the receiving optical fiber to the maximum extent. It also minimizes the impact on the system due to its involvement in the optical link, which is a basic requirement for fiber optic connectors. To a certain extent, the fiber optic connector also affects the reliability and performance of the optical transmission system. First, the optical cable comes in from the outside, and the optical cable is fused in the optical cable box. This is the terminal box that you said. The fusion of the optical cable is the door technology. Need to strip the cable, use the pigtail and the fine fiber in the cable to weld, and then put it in the box, so that our pigtails will come out, and the head of the fiber will be connected to the ODF (a shelf, connected by a coupler) The other side of the shelf is also made of pigtails (that is, fiber jumpers can also be used, in fact, the pigtails are used for fiber jumpers), connected to the photoelectric converter, and the optical transceiver is connected to the router by the network cable---switch ---LAN---Host. In the above steps, the fiber distribution frame can be neglected, and the pigtail is directly connected to the fiber transceiver, so that the coupler is not used. The coupler is the fiber that connects the two pigtails (the fiber jumpers are connected together). The coupler is a movable connection for two fibers or pigtails. The flanged fiber optic terminal box is the final connector of a fiber optic cable. One end is a fiber optic cable and the other end is a pigtail, which is equivalent to splitting a fiber optic cable into two. For a single optical fiber device, the optical fiber fusion splicing box is used for connecting two optical cables into one long optical cable. They are not interchangeable. The optical cable and the optical transceiver are connected through the optical fiber terminal box, that is, the optical transceiver can only be used. Insert the pigtail, can you understand this about the terminal box and the fusion box? In which the two heads of the optical fiber are fused, except that the former is the fusion of the optical cable and the pigtail, and the latter is the fusion between the optical cables. Is this basically the same for the connection box and the terminal box? It is not the same. The connection box is fully sealed and waterproof. However, it cannot fix the pigtail. The terminal box is not waterproof. The internal structure can fix the fiber optic cable on one side, and the fixed fiber pigtail coupler can be connected to the fiber or pigtail. It is active, not welded. The coupler can only connect two pigtails and is divided into interfaces such as SC/PCFC/PC, and the cable and the pigtail are welded by the fusion machine and are dead. What is the difference between pigtails and jumpers? Can you divide the jumper into two for the pigtail? Only one end of the pigtail is a movable joint, and both ends of the jumper are movable joints. There are many kinds of interfaces. Different interfaces require different couplers. The jumper can be used as a pigtail. We are doing this. A head is called a fiber jumper. The middle fiber is usually three meters long. It is used to connect the coupler and fiber transceiver, optical module or directly connect two devices with optical ports. There is only one head and a small fiber behind. The pigtails are generally made of two fiber-optic jumpers with the same head. The middle is cut into two pigtails, which are mainly used to weld on the cable. After the cable is melted on the pigtail head, it can be connected to the clutch or directly connected. Optical transceivers, optical modules. The fiber optic connector should refer to the coupler (flange), which is used to connect the pigtail and the fiber jumper.

According to data released by the Ministry of Industry and Information Technology of China, as of the end of April, China's 4G network covers 95% of the administrative villages and 99% of the population in the country, and more than 95% of the administrative villages have achieved optical fiber broadband network access. According to the Ministry of Industry and Information Technology, the implementation of the [Special Action for Promoting Internet Speeding up and Fee Reduction and Speeding Up the Cultivation of New Momentum for Economic Development 2018" in 2018 will enable consumers and the whole society to further enjoy the results brought by the development of information and communication. The data shows that in the construction of broadband networks, as of the end of April, the investment in fixed assets was 67.1 billion yuan, an increase of 16% over the same period last year. 40 million optical fiber broadband ports were newly added nationwide; 120,000 4G base stations were newly built, with a total of 3.4 million. Multi-regional telecommunications companies implemented a new round of free speedups. The number of users using broadband of 100M or more nationwide increased by 37 million, accounting for 47% of broadband users. Dozens of cities including Beijing, Shanghai, Chongqing, Chengdu, and Zhengzhou have already begun to provide Gigabit broadband services. The Broadband Development Alliance recently released the "China Broadband Rate Status Report", saying that in the first quarter of 2018, the average download rate of China's fixed broadband network exceeded the 20M mark, and the average download rate of 4G network access to the Internet reached 19.12Mb per second. Has entered the world's first echelon. The mobile Internet permeates every aspect of life. In April 2018, households used 3.4GB of mobile Internet traffic, an increase of 154% over the same period last year, and the potential for traffic consumption maintained a rapid release. According to preliminary statistics, 550,000 access point devices have been deployed in 66,000 hotspots across the country, providing free Internet access in administrative service halls, transportation hubs, core business districts, and tourist attractions. Hot spots. According to the May 2018 consumer price data released by the National Bureau of Statistics, in May, the national consumer price rose by 1.8% year-on-year, of which, the communication service price in May fell by 0.9% year-on-year. In addition, the price of communications services fell by 0.8% from January to May.