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Fiber Optic Distribution Box: An Important Comprehensive Cabling Product

Views: 0     Author: Site Editor     Publish Time: 2024-04-25      Origin: Site

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Optical fiber distribution box is a device used in optical fiber communication networks, usually used to connect and distribute optical fiber lines. They are usually used at the intersection or branch points of optical cables to connect different optical fiber lines to achieve signal distribution and transfer. These fiber distribution boxes usually have multiple ports for connecting trunk optical cables and branch optical cables, as well as connecting different optical fiber equipment or user terminals. They help manage fiber optic lines and provide flexible connection and cabling solutions, while also protecting fiber optic cable connection points from damage and contamination. In addition, the fiber distribution box can also be pre-installed with optical splitters (micro, plug-in type) for distribution and combination of optical signals.


Optical fiber distribution boxes have multiple functions in optical fiber communication networks, including:

1. Optical cable connection: The optical fiber distribution box is used to connect trunk optical cables and branch optical cables, as well as different optical fiber equipment or user terminals. They provide a centralized location to manage and distribute fiber optic connections.

2. Signal distribution: The optical fiber distribution box can distribute the optical signals from the main optical cable to different branch optical cables or equipment to realize signal transmission and distribution.

3. Fiber protection: The optical fiber distribution box provides protection at the connection points to prevent damage or contamination of the optical fiber. They usually have good sealing and waterproof properties, ensuring stable transmission of optical signals.

4. Line management: The management and maintenance of optical fiber lines can be realized through fiber distribution boxes, including functions such as identifying different lines, monitoring connection status, and adjusting connection layout.

5. Flexibility and scalability: The design of the fiber distribution box is flexible, and the optical fiber connection can be expanded or adjusted as needed to adapt to network changes and expansion.

6. Optical signal processing: Some fiber distribution boxes may have optical signal processing functions, such as splitting, combining, amplifying, etc., to adjust and optimize the transmission of optical signals.


The optical fiber distribution box consists of shell (including lock and other structures), optical cable fixing device (incoming and outgoing cables), splicing plate, flange mounting component/splitter mounting structure, fiber routing related structures (wire loops, transparent plates etc.), signs (grounding signs, anti-laser markings (stenciled) terminal tables, etc.), and some have electrical connection devices (grounding).

According to installation methods, it can be divided into wall mounted, overhead, and pole mounted.

Fiber optic cable distribution boxes can be divided into metal distribution boxes and plastic distribution boxes according to materials.

According to usage scenarios, it can be divided into indoor fiber distribution boxes and outdoor fiber distribution boxes.


Indoor fiber distribution box is a device used for indoor optical fiber network cabling. It is usually installed inside a building and is used to connect indoor optical cables and outdoor optical cables to provide distributed optical fiber connection and management. The protection level and whether it is flame retardant need to be considered. They are usually designed with the following aspects in mind:

1. Protection and security: Indoor fiber distribution boxes need to provide adequate protection to prevent fiber connection points from mechanical damage, dust or other contaminants. In addition, safety is a key consideration to ensure that the equipment does not cause harm to people during use.

2. Wiring and connectivity: The indoor fiber distribution box needs to provide enough wiring space and connectivity to accommodate multiple optical cables and provide them with suitable connection methods, such as plug-in connectors or fusion connectors.

3. Management and maintenance: Good indoor fiber distribution box design should take into account the convenience of management and maintenance, including easy-to-access panels, labels and wiring diagrams, as well as easy-to-maintain structural design to quickly diagnose and repair problems.

4. Ventilation and heat dissipation: Since indoor environments generally need to handle more heat, the design of indoor fiber distribution boxes may need to consider ventilation and heat dissipation to ensure stable operation of the equipment and prevent overheating.

5. Adapt to different specifications of optical fibers: Indoor fiber distribution boxes usually need to adapt to different specifications and types of optical fibers, such as single-mode optical fibers and multi-mode optical fibers, so their design should take into account the connection needs of these different types of optical fibers.。

Outdoor fiber distribution box is an optical fiber connection and management device specially designed for outdoor environments. Its main function is to connect outdoor optical cables and indoor optical cables, and provide protection against harsh weather conditions and environmental effects. UV, waterproof, dustproof, insect damage, etc. need to be considered. . They usually have the following features and functions:

1. Waterproof and dustproof design: Since the outdoor environment may be exposed to pollutants such as rain, moisture, and dust, outdoor fiber distribution boxes usually have waterproof and dustproof designs to protect the internal optical fiber connection points and equipment from damage.

2. Corrosion-resistant materials: Considering the corrosive substances that may exist in the outdoor environment, outdoor fiber distribution boxes are usually made of corrosion-resistant materials to ensure long-term stable performance.

3. Impact-resistant and anti-theft design: To prevent accidental collision or malicious damage, outdoor fiber distribution boxes may have impact-resistant and anti-theft designs, such as sturdy shells and safety locks.

4. Temperature control and heat dissipation: Considering possible temperature changes in the outdoor environment, outdoor fiber distribution boxes usually have temperature control and heat dissipation designs to ensure the stable operation of internal equipment under various climate conditions.

5. Easy to install and maintain: The design of the outdoor fiber distribution box should take into account the ease of installation and maintenance, so that quick access, inspection and maintenance can be carried out when needed.

6. Adapt to different scenarios: Outdoor fiber distribution boxes can be designed according to different application scenarios and needs, such as urban streets, highways, railways, mines, etc., to meet the fiber connection needs of different environments.


The optical fiber distribution box has flexible access options: it supports multiple types of optical fiber connectors, such as SC, LC, FC, etc., to meet different user needs and provide flexible access options. Optimized wiring structure and intelligent management: The carefully designed internal wiring structure provides sufficient wiring space and neat wiring management to ensure that optical cable connections are orderly and easy to maintain. Different types, the number of cores that can be accommodated, the structure, etc. are suitable for various scenarios.

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