On April 14, witnessed by President Xi Jinping and Brazilian President Lula, Minister of Industry and Information Technology Jin Zhuanglong met with Brazilian Minister of Science, Technology and Innovation Luciana Santos and Minister of Communications Juscelino Filho respectively Signed the "Memorandum of Understanding between the Ministry of Industry and Information Technology of the People's Republic of China and the Ministry of Science, Technology and Innovation of the Federative Republic of Brazil on Information and Communication Technology Cooperation" and "The Ministry of Industry and Information Technology of the People's Republic of China and the Ministry of Communications of the Federative Republic of Brazil, the National Memorandum of Understanding on Cooperation in the Information and Communication Industry of Telecommunications Regulatory Authority.

1)By Optical connector: LC fiber patch cable; FC patch cable; SC fiber cable; ST patch cable; MU fiber patch cable; MTRJ patch cord; E2000 patch cable; MPO fiber cable. 2)By fiber optic cable types Single mode fiber optic cable: Generally in yellow color and useful for long transmission distance; Multimode fiber optic cable: Generally the multimode patch cable are orange or gray and therefore are used for short distance transmission. 3)By fiber optic cable Jacket PVC: Non-Flame Retardant; LSZH : Low smoke zero halogen, Flame Retardant Fiber optic connector type: LC, FC, SC, ST, MU, MTRJ, E2000,MPO Ferrule Interface type: PC, UPC, APC Fiber cores: Simplex, duplex, 4 fibers, 8 fibers etc. Fiber type: Single mode (G.652, G655), multimode(50/125)/(62.5/125) 100% Insertion Return Loss, End Face and Interference inspection Low insertion loss, high return loss Excellent mechanical endurance Insertion loss: <0.5 dB Operation temperature: -20?? to 85??C 10G OM3 OM4 fiber cable available According to the different modulus of the transmission point, optical fiber can be divided into single-mode fiber and multimode fiber. The so-called “mode” refers to a beam of light entering the optical fiber at a certain angular speed. Single-mode fiber uses solid-state laser as the light source, and multimode fiber uses light-emitting diode as the light source. Multimode fibers allow multiple beams of light to travel simultaneously in the fiber, resulting in mode dispersion (because each “mode” light enters the fiber at a different angle and they arrive at the other endpoint at a different time, a feature called mode dispersion). Therefore, the core of multimode fiber is thick, the transmission speed is low, the distance is short, and the overall transmission performance is poor, but its cost is relatively low, and it is generally used in buildings or geographically adjacent environments. Single-mode fiber can only allow a beam of light propagation, so single-mode fiber has no mode dispersion characteristics, therefore, the core of single-mode fiber is correspondingly thinner, transmission frequency bandwidth, large capacity, long transmission distance, but because it requires a laser source, the cost is higher. Multimode fiber The optical signal in multimode fiber propagates through multiple paths; It is generally recommended to apply when the distance is less than a mile. The effective distance from the transmitter to the receiver of multimode fiber is approximately 5 miles. The available follow-up is also affected by the type and quality of the transmit/receive device; The stronger the light source, the more sensitive the receiver and the farther the distance. Studies have shown that the bandwidth of multimode fiber is approximately 4000Mb/s。 Single-mode fiber is manufactured to eliminate pulse broadening. Due to the small core size (7-9 microns), light jumps are eliminated. Focused laser sources are used at 1310 and 1550nm wavelengths. These lasers shine directly ...

In the optical fiber communication system, the task of the optical receiver is to recover the information carried by the optical carrier after optical fiber transmission with minimal additional noise and distortion. Therefore, the output characteristics of the optical receiver comprehensively reflect the entire optical fiber communication system performance. After the optical signal transmitted by the optical transmitter is transmitted, not only the amplitude is attenuated, but the pulse waveform is also broadened. The function of the optical receiver is to detect the transmitted weak optical signal, and amplify, reshape, and regenerate the original transmission signal. An optical receiver, sometimes called a fiber optic receiver, is a component in a fiber optic network. The role of the receiver is to translate pulses of light that are sent through optical fibers into electrical signals. Once the information is converted into electricity, the information can be read by an electronic device, such as a computer, that is attached to the network. An optical receiver is an important component in a fiber optic network. In fiber optics, light is used to send information between electronic devices, such as two computers on a network. Cables, which are usually made of a highly reflective silica glass, are used to transmit pulses of light. The light bounces down the hollow tube of silica until it reaches the optical receiver at the other

According to a report on the telecompaper website on July 13, ZTE plans to launch a commercial 10GB symmetric passive optical network (XGS-PON) in major cities in South Africa, aiming to establish cooperative relations with South African fixed network operators. ZTE South Africa CTO Alex He told the news portal that the company is also eyeing cooperation with the country’s mobile operators to tap the 5G market. Alex He said that the commercial 10GB symmetric passive optical network service will provide users with high-speed broadband and Wi-Fi services. He added that ZTE will release the AX11000 WiFi 6E 10gb symmetrical passive optical network (XGS-PON) optical network terminal for this purpose. XGS-PON has the potential to help communication service providers provide high-speed Internet access to customers while controlling backhaul costs. Regarding 5G, Alex He said: As South African operators see the opportunity to apply 5G to various industries, ZTE hopes to implement some new and interesting cases with them on the global stage.

1. Wired communication Wired communication refers to the transmission of communication devices through cable connection, that is, transmission media such as overhead cables, coaxial cables, optical fibers, and audio cables. 1. Advantages. The biggest advantage of wired communication equipment is strong anti-interference, high stability, with a certain degree of confidentiality, fast transmission rate, the bandwidth can be unlimited. 2. Disadvantages. Line communication is affected by the environment, the expansion is weak, there is attenuation, construction difficulty, poor mobility, high cost. 3, commonly used cable communication equipment: television, telephone, optical terminal machine, computer, refrigerator, etc. Two, wireless communication. Wireless communication refers to the communication without physical connection line, that is, the use of electromagnetic signals can spread in the free space of a communication mode of information exchange. 1. Advantages. The biggest advantage of wireless communication equipment is the environment, which does not need to be limited by lines and has certain mobility. It can communicate through wireless connection in mobile state, with low construction difficulty and cost. 2, disadvantages, wireless communication equipment is weak anti-interference, slow transmission rate, limited bandwidth, transmission distance is also limited, low cost. However, wireless communication is changing the corresponding technology to make the transmission rate higher (802, 11N rate can reach 100Mbps is not lower than wired communication), more stable and convenient, so wireless communication equipment will be the development trend. 3, the common wireless communication equipment are: wireless LAN, satellite, radio, radio TV, mobile phone (mobile phone), mobile GPRS Internet access. Both wired and wireless networks are helpful, be it for home use or otherwise. Both networks are different from each other, coming with unique sets of advantages you may find beneficial. It’s important to assess what you need best, as in the end, what matters is that your chosen network will do its job—to establish a good and stable connection

1. What is an optical module? The optical module is composed of optoelectronic devices, functional circuits and optical interfaces, etc. The optoelectronic devices include two parts: transmitting and receiving. To put it simply, the function of the optical module is to convert the electrical signal into an optical signal at the sending end, and then convert the optical signal into an electrical signal at the receiving end after transmission through the optical fiber. Commonly divided into single-mode optical modules and multi-mode optical modules, the former is suitable for long-distance transmission, and the latter is mostly suitable for short-distance transmission. Today we will not talk too much about the types and working principles of optical modules, but will focus on the application scenarios of optical modules 2. Several application scenarios of optical modules 2.1 Data Center Interconnection Scenario With the Internet of Everything becoming the social norm, data centers, especially large data centers in the form of clusters, are rising rapidly. In addition to realizing the high-speed operation and stable support of Internet terminal services, the interaction between data centers is also very important, creating a new Scenario: DCI (Data Center Interconnect). This concept was born in recent years. With the rapid development of many emerging services such as cloud computing, big data, and VR, many applications that rely heavily on data centers are experiencing explosive growth. A single data center is overwhelmed and quickly runs out of resources. A single data center cannot easily expand capacity due to site and energy supply issues. At this time, multiple data centers are built in the same city or in different places, and the support for interconnection and collaborative business completion between them has become a new option. In addition, more and more enterprises are undergoing digital transformation, and enterprises in the same industry need to share and collaborate at the data level, which also prompts the interconnection between data centers of different enterprises. Going back to our optical modules, in the data center interconnection scenario, data centers need to realize massive information interaction. In this case, both the amount of information and the transmission frequency will be larger and denser, and the distance will be farther than a single data center. Then, optical fiber communication advantages stand out. In addition, the data center interconnection scenario requires switching devices with higher speed, lower power consumption, and smaller size, and one of the core factors that determines whether these performances can be realized is the optical module. The data traffic in the data center continues to grow, and the trend of large-scale and flattening between data centers is also gradually promoting the development of optical modules to a faster transmission rate. The transmission distance of multimode fiber is limit...