As the demand for high-speed data continues to grow, operators need continuous network upgrades to support higher transmission capabilities. In the long term, due to the demand for cloud-based software, 5G systems, and Industry 4.0, capacity requirements will continue to grow.

Fiber Optical WDM system can effectively solve the problem of insufficient fiber core resources of the transmission network but the need to quickly complete service access, and can bear the access service requirements on the limited fiber core resources, thereby releasing idle fiber cores to complete other service access.

CWDM system uses 8-16 wavelengths of coarse wavelength division to perform wavelength division multiplexing, which can combine optical signals of different wavelengths into a beam of light, and then decompose it at the receiving end, thereby realizing single-fiber multiplexing. At present, the major manufacturers on the market include Rascomda, Fiberhome, etc. The new type of optical fiber multiplexing equipment products mainly include 1:6 aggregation, 1:8 aggregation, 1:12 aggregation and 1:18 aggregation. The wavelength ranges from 1270nm to Between 1610nm, the number of channels that can be synthesized or separated are 6, 8, 12, and 18, respectively. The maximum transmission capacity can reach 80Gbit/s, and it supports multiple network frequency bands such as 2G, 3G, 4G and 5G. Compared with the old WDM equipment, this new type of optical fiber multiplexing equipment is more technologically advanced, and the appearance, quality, and form of the equipment have become more refined. It can be applied to various network construction environments, so that it can be used in various network construction environments. Multi-channel deployment can alleviate the problem of insufficient fiber cores caused by large-scale site construction in a timely manner.

As a new type of equipment, optical fiber multiplexing equipment adopts a chip splitter structure, and its design, production, and procurement methods all meet the management specifications of operators. As a passive device, the optical fiber multiplexing device does not need to change the original active device network architecture. It only needs to be installed on the base station side and connected to the active device in the optical switch box. It can meet the needs of various construction scenarios and has strong performance. Expansion capabilities. In terms of network construction, facing the situation of unconditionally laying optical fibers in areas with scarce optical fiber resources, traditional construction schemes cannot meet the requirements of the construction period, etc., the use of optical multiplexing equipment can complete the rapid reconfiguration of optical cables, reduce fiber core resource consumption, and greatly shorten the construction of stations. Time to achieve rapid and large-scale site construction. However, if optical fiber multiplexing equipment is used frequently, multiple cells may fail and disconnect from the network at the same time. Therefore, it is necessary to comprehensively evaluate the actual situation of the area to determine the construction plan. In terms of cost management, the era of large-scale 5G network construction is approaching. Project construction will face problems such as tight cycle, heavy workload, and few resources. The application of optical fiber multiplexing equipment can greatly reduce the cost of property communication and construction time caused by new optical cables. Cost, construction cost of pipeline optical cable. However, the introduction of new equipment will inevitably increase user training and rework, which will also bring about a certain amount of labor cost. Therefore, it is necessary to comprehensively evaluate the cost of a single project to ensure that it can save construction costs after use.