ODN optical cable distribution subsystem

(Optical Distribution Network) Optical distribution network is an FTTH optical cable network based on PON equipment. Its function is to provide an optical transmission channel between OLT and ONU. Functionally, ODN can be divided into four parts from the central office to the user side: feeder optical cable subsystem, distribution optical cable subsystem, home line optical cable subsystem, and optical terminal subsystem.

ODN (Optical Distribution Network) optical distribution network is based onPONequipment.FTTHoptical cablenetwork. Its function is to provideOLTandONUan optical transmissionchannel. Functionally, ODN can be divided into feeder optical cable subsystem, distribution optical cable subsystem, home line optical cable subsystem, andopticalterminal subsystem.In the fourth edition of the textbook "Computer Networks" published by the Electronics Industry Press, in section 10.6.2, ODN is understood as Optical Distribution Node, which refers to the optical fiber node of HCF (Hybrid Fiber Coax) that simulates optical fiber, used to connect simulated optical fibers.

在电子工业出版社的《计算机网络》教材第四版上10.6.2章节中，ODN理解为Optical Distribution Node，即光分配节点。指的是HCF（Hybrid Fiber Coax,光纤同轴混合网）中模拟光纤的光纤节点，用于连接模拟光纤。

FTTH Fiber to the Home (Fibre (Fiber) To The Home, FTTH)

PDS Integrated Wiring System

With the development of computer technology and communication technology, in order to meet the demands of the industry and the market, the structured cabling system is continuously being updated and iterated. From Category 3 to Category 5, from Category 5 to Category 5e, and now to the mature and widely used Category 6 system, the Category 6a system with 10G copper cables has also become popular in data centers. In response to the demand for network and video acceleration, Category 7 and Category 7a systems have emerged, and the standards for Category 8 systems are being formulated. Multi-mode fiber has also been optimized from the gigabit OM1 to the 10G OM3 and the OM4 fiber that supports longer 10G transmission distances. Looking to the future, the structured cabling market mainly presents several hotspots: (1) Intelligent cabling systems, what is intelligent cabling? Intelligent cabling is a system that uses electronic patch panels along with network scanners and management software to monitor and manage the connectivity, disconnection, and unauthorized access of the network's physical layer in real-time. With the widespread application of concepts such as virtualization, cloud computing, and big data in the new generation of data networks, structured cabling, as the physical foundation of the network, has become increasingly important to maintain and manage effectively to minimize losses caused by network interruptions. (2) POE cabling, POE cabling refers to the technology that provides power to IP-based terminals (such as IP phones, WiFi access points, network cameras, etc.) while transmitting data signals without making any changes to the existing Ethernet cabling infrastructure. (3) Combination of wired and wireless, due to the popularity of smart terminals, the demand for wireless has become increasingly urgent, with over 90% of current projects having wireless requirements. The combination of wired and wireless refers to the deployment of wireless APs at the end of wired connections, generally using POE for power supply. (4) High-density high-bandwidth cabling, high-density high-bandwidth cabling refers to the use of high-density devices with MPO connectors pre-terminated. The size of a 12-core or 24-core MPO connector is similar to that of an LC duplex connector, saving more space. In limited space environments (especially in data center applications), this can greatly simplify the configuration process of fiber optic networks while supporting high bandwidth transmission of 10G/40G/100G. (5) Smart home cabling refers to the internal wiring and management of homes after fiber is brought to the home. Currently, most still follow this model, but with the rise of smart homes, there are higher demands for home cabling. Whether home cabling can perfectly integrate with smart home systems has extended the function of home cabling from mere wiring management to the ability to store, process, and exchange data. (6) Micro-module data centers, micro-module data centers integrate traditional data center systems such as cabinets, cooling, network cabling, power supply, lighting, and environmental monitoring into a unified whole. They use modular components and standardized interfaces to achieve rapid and flexible deployment of data centers and subsequent expansions. This not only significantly reduces construction costs but also shortens the construction and deployment cycle of data centers, enhancing the mobility and flexibility of data center deployment. Of course, with the continuous development of various technologies, structured cabling will have more technological hotspots and application scenarios.

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