China TC Smart Systems Group Company Cases

TC Viewpoint | Application of Optical Fiber in LAN Integrated Cabling   The optical fiber network is the most widely used and fastest-growing network in the world. The two fastest-growing areas in optical fiber networks are telecommunication networks (long-distance communication) and local area networks. The integrated wiring of the local area network refers to the physical layer of the local area network, including the information module, optical fiber module, panel, twisted pair copper cable, optical cable, optical fiber jumper, optical fiber pigtail, patch panel, and patch panel. Optical fiber communication has the advantages of large capacity, strong anti-interference performance, and strong security performance, and is widely used in the integrated wiring network of local area networks. Application of Multimode Fiber in Data Center​ Optical fiber is more focused on high-speed data transmission in LAN-integrated wiring, especially in 400G data center optical fiber wiring networks. The supported application distance of multimode optical fiber can meet the needs of 90% of backbone applications and can fully meet the high-speed requirements of 400G networks. Data center networks use multimode optical fiber, copper wire, and other transmission media to achieve extremely high transmission rates, which enables data center networks to meet the needs of large-scale data transmission and support high-performance applications such as high-definition video and big data processing. Multi-wavelength multiplexing technology: There are currently two types of multi-wavelength multiplexing technology products on the market. One is BiDi (Bi-Direction) technology, and the other is short wavelength division multiplexing (SWDM) technology based on OM5 optical fiber. Conventional 10G multimode single-core optical fiber transmission data speed is 10Gb/s and 25Gb/s. When wavelength division multiplexing technology is used, the original single channel that can only transmit one optical carrier on one optical fiber is transformed into a channel that can transmit multiple optical carriers of different wavelengths, which doubles the transmission capacity of the optical fiber. The maximum data transmission speed of a single-core optical fiber can reach 40Gb/s and 100Gb/s. As a result, the transmission speed of MPO optical modules can reach 400Gb/s and 800Gb/s. The industry is exploring the use of multi-wavelength multiplexing to reduce the number of optical fibers used. PAM4 modulation technology: PAM4 (4-Level Pulse Amplitude Modulation, four-level pulse amplitude modulation) is a type of PAM modulation technology. PAM4 modulation technology can effectively improve bandwidth utilization efficiency. At the same time, PAM4 uses a high-order modulation format, which is an effective way to reduce the number of optical devices used, reduce the requirements for optical device performance, and achieve a balance between performance, cost, power consumption, and density in different application scenarios. MPO/MTP branch patch cord MPO (Multi Push On) is a type of multi-core fiber connector, which is adopted by the IEEE standard as a 40G/100G transmission connector. Usually, 12-core optical fibers are arranged in a row, which can support one or more rows of optical fibers in the same MPO connector. According to the number of cores arranged in the connector, it can be divided into one row (12 cores) and multiple rows (24 cores or more). The MPO high-density optical fiber pre-connection system is currently mainly used in three major areas: applications in high-density environments in data centers; fiber-to-building applications; and connection applications inside splitters and optical transceiver equipment. Iteration of fiber optic cabling in data centers As fiber optic technology is upgraded, fiber optic cabling system product technology, which is the "central nervous system" of data centers, is also undergoing a new generation of upgrades. The continuous release of new standards for fiber optic technology, it will lead the cabling product technology into the second generation of data centers. The more representative product lines of the second generation of fiber optic cabling systems in data centers include ultra-low loss pre-connected optical cable solutions, high-density fiber optic wiring systems, and new ultra-high-density micro connectors. Application of optical fiber in F5G all-optical communication network In February 2021, the European Telecommunications Standards Institute (ETSI) formally established the fifth-generation fixed network (F5G) working group. ETSI will define the F5G international standard from three dimensions: full optical connection (FFC), enhanced fixed broadband (eFBB), and guaranteed stable experience (GRE). With the application of new high-bandwidth services in the F5G era, data traffic will continue to grow, further exacerbating the data transmission pressure of the bearer network, which will put forward more diversified requirements for the innovative application of optical fiber and cable. First, the construction of backbone networks and submarine cables will promote the application of G.654.E optical fiber; secondly, the expansion of metropolitan area networks and access networks will drive the demand for G.652.D, G.657.A1, and G.657.A2 optical fibers; data centers are mainly based on the application of VCSEL laser-optimized multimode optical fibers: OM3, OM4, and OM5. At the same time, it will also greatly increase the demand for high-density, large-core optical cables, ultra-fine diameter optical fibers, air-blown optical cables and other products.