Classification of optical fiber bushing

Fiber bushing, as an important connection and protection component in optical fiber communication system, can be divided into many types according to its design, materials and application scenarios. The following is a detailed introduction to the classification of optical fiber bushing:

1. Heat shrink protective sleeve

Composition: Mainly composed of cross-linked polyolefin, heat shrink tube and reinforced stainless steel wire (or ceramic).

Features: It can improve the mechanical strength of optical fiber welding points, protect the welding points, and ensure the reliability of welding. Before the contraction, the transparent outer layer can be used to detect whether the light joint is connected correctly; When shrunk, the transmission characteristics of the fiber are maintained and the strength and protection of the light junction are provided.

2. V-shaped slot elastic connection sleeve

Design: The V-shaped groove inside the casing has a certain taper at both ends, and the groove wall has a certain elasticity.

Function: The inner circle diameter of the V-shaped slot is slightly smaller than the diameter of the fiber to be connected. When the fiber at both ends is embedded, the wall of the slot will undergo elastic deformation, so that the fiber will bear the elastic force of the wall radially and evenly, thus ensuring the alignment of the fiber connector.

3. Glue the connection casing

Material: Usually made of clear quartz glass.

Features: The tube is pre-placed with adhesive. When in use, after making and cleaning the end face of the optical fiber connector, directly insert the adhesive nozzle, and realize the alignment and bonding of the optical fiber through the mechanical splicing device. After bonding, the casing is cured in daylight.

4. Other types

In addition to the three main types mentioned above, fiber optic bushings can also be classified according to other characteristics, such as:

Based on the number of optical fibers, the system can be divided into a single optical fiber splicing sleeve and multiple optical fiber splicing sleeve.

According to the application scenario: it can be divided into indoor optical fiber bushing and outdoor optical fiber bushing, the latter usually requires stronger weather resistance and mechanical strength.

According to materials: In addition to the materials mentioned above, there are some special materials made of fiber optic bushings, such as high temperature, corrosion or radiation resistant materials.

In summary, there are a variety of classifications of optical fiber bushings, and each type has its specific application scenarios and advantages. When selecting an optical fiber sleeve, consider the actual optical fiber communication system requirements, environmental conditions, and budget.

Chengdu Focus Infra Materials Co.,Ltd is a global business trading company. The company focused on the field of fiber optical networks and data communications, our products are widely used in telecommunication transmission network systems, wide area networks, FTTH, FTTX, FTTA and security monitoring systems. Products mainly include：heat shrink tubes, cold shrink tubes, joint closures, terminal connector, terminal box, fiber optic splice closure, PLC splitter, fiber pigtail, FTTH accessories.