What is fiber optic bushing?

An optical fiber sleeve, also known as an optical fiber splicing sleeve or optical fiber protection sleeve, is a splicing component used to enhance protection or support positioning of optical fiber splicing parts. According to different application scenarios and designs, optical fiber bushings are of various types, including heat shrink protection bushings, V-slot elastic connection bushings, and bonding connection bushings.

Types and characteristics

Heat shrink protective sleeve:

Also known as heat shrink type optical fiber protection sleeve, mainly contains heat shrink tube, hot melt tube and stainless steel needle or ceramic three parts.

Specially designed, it is composed of crosslinked polyolefin, heat shrink pipe and reinforced stainless steel wire, which can significantly improve the mechanical strength of optical fiber fusion, protect the fusion, and ensure the reliability of fusion.

Before shrinking, the transparent outer layer can be used to detect whether the light joint is connected correctly, so that the fiber can be easily and safely assembled, and provide protection.

After contracting, the transmission characteristics of the fiber can be maintained, providing strength and protection at the junction of the light.

V-groove elastic connection sleeve:

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

The inner circle diameter of the V-shaped slot is slightly smaller than the diameter of the optical fiber to be connected. When the optical fibers at both ends are embedded, the elastic deformation of the slot wall is caused. The optical fibers bear the elastic force of the slot wall radially and uniformly, ensuring the alignment of the optical fiber joints.

Bonding sleeve:

It is a transparent quartz glass tube in which the adhesive is pre-placed.

When in use, after the end face of the optical fiber connector is made and cleaned, it is directly inserted into the adhesive nozzle, and then placed on the mechanical connection equipment, the optical fiber is aligned and bonded by input the corresponding signal, and the adhesive sleeve is cured in the sunlight.

Application and selection

Optical fiber bushing is widely used in the field of information communication, especially in the connection and protection of optical fiber plays a vital role. According to the different use environment, technicians design different types and specifications of optical fiber bushing, such as a single optical fiber connection bushing, multi-optical fiber connection bushing. When selecting an optical fiber sleeve, it is necessary to comprehensively consider the specific application scenario, optical fiber type, connection mode and other factors, and perform selection tests to ensure its performance and reliability.

Sum up

Fiber bushing is an indispensable part of optical fiber communication system, which can effectively protect fiber connection points and improve the reliability and stability of optical fiber communication. With the continuous development of optical fiber communication technology, the design and application of optical fiber bushing will continue to innovate and improve.

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.