Two types of optical fiber end: connectors and stitching


Two types of optical fiber end: connectors and stitching

The optical fiber -side connection refers to the physical connection between the fiber jump line or the wire and the equipment. It is a necessary step for the optical fiber network. It provides a simple way for the optical fiber cross -connection and optical wave signal distribution. We usually have two methods to connect the fiber cable -use connectors or stitching.

Introduction to the connector side

When the optical fiber jump end is carried out, the connector can be placed at the end of the fiber wiring beam. Since the introduction of optical fiber technology decades ago, various types of connectors have been developed, such as SC, FC or LC. The fiber connector consists of three main components: a circle, a connector, and a coupling mechanism.

Traditional epoxy resin/polishing fiber connector

Epoxy resin/polishing fiber connectors are very traditional and widely used connectors. You may find that most factories manufactured connectors are epoxy resin/polishing fiber connectors. This is due to multiple factors consideration. Oxygen resin/polishing type has low cost and low loss, and is relatively reliable compared to other types. Optical fiber lines are glued on the connector with epoxy resin, and the end is polished with a special polishing membrane. Most of the traditional epoxy resin and polishing fiber connectors need to be used in the deployment of a large number of connectors.

Fiber fast connector

The fiber fast connector bonds a fiber optical short -cut line into the core, and the end surface of the core is polished to the PC/UPC/APC surface. The other end of the fiber is cut and placed in the main body of the connector. It is more expensive than epoxy resin/polishing fiber connectors. The figure below shows a fast -fiber -fiber -fiber -fiber -fiber connecter component.

Figure 1: Fast (FS) SC optical fiber connector

It is recommended to use the visual fault positioning instrument monitoring loss during the end connection, because once there is a problem with the end connection process, you will lose the connector and two connecters at the same time. It is suitable for wiring applications for connectors and often requires movement, added, changed or tested.

Type of splicing end

Following is another commonly used end connection type in the on -site connection, without any connector. It can be further subdivided into two types: mechanical stitching and melting.

Mechanical stitching

Mechanical stitching is a connection between two or multi -root fiber, which accurately aligned and fixed in place through mechanical components. It should be noted that the fiber that is stitched by mechanical stitching is not permanently connected, but it is only accurately fixed and kept together so that the optical can enter another fiber from one fiber.

Because the entire process of mechanical stitching is relatively simple and fast, it is generally used in the case of limited time and professional skills. Fiber technicians usually use mechanical stitching in indoor transmission cables.


The melting uses the heat generated by the arc to achieve the optical fiber end, also known as the arc melting. Unlike mechanical stitching, melting requires melting machines, which intuitively shows that its cost is higher. When the melting process begins, you should remove all the protective coatings at the end of each fiber, then cut the fiber with a high -precision fiber cutter, and use the melting machine to align the end of the fiber, and finally “fuse” or use the arc “welding”. The figure below shows a faster (FS) melting machine.

Figure 2: Fast (FS) melting machine

Following is usually used in a single -mode network for outdoor, long -distance and high -performance. More importantly, in factories that manufacture fiber -fiber equipment such as fiber lasers and amplifiers, it also needs to be fused.

Connector end connection and splicing end: Which is better?

There is no uniform standard in the current industry to determine whether the optical fiber -end connection is better or better stitching. Which one to choose to choose depends on various factors. You may get some help.

What are the advantages and disadvantages of connectors?

1. Benefit

Compared with the melting terminal, the connecter is easier to operate, and no melting machine is required to save time and economic costs.

2. Disadvantages

The light loss using the connecting side of the connector is higher than the light loss at the melting end.

What are the advantages and disadvantages of the splicing end?

Compared with the use of the connector, the stitching not only provides a stronger and more reliable connector, but also has lower insertions.

Stitching can be used to mix several different types of optical cables, for example, a 48 -core optical cable can be connected to six 8 -core optical cables.

The stitching requires operators with professional skills, and the cost of stitching assembly may be very large.

The stitching assembly limits the storage capacity of the battery, which is not convenient to work outdoors.

in conclusion

In the optical fiber network deployment, in addition to the two on -site connection types of the fiber cable, the pre -end -end optical fiber cable is becoming more and more popular. It can be installed immediately without having to perform end connection and testing on the spot. Even so, for some situations, such as long -distance transmission or wiring, it is hidden on the wall, and the scene is better because it has higher flexibility. Overall, please consider artificial, tools, costs and other factors, and then determine which solution is more suitable for your project.

understand more

1. Benefit

2. Disadvantages

In order to answer your doubts, the above is what we have organized about Double Row Type D Style Plug Signal Connector 8 Pin Ez Rj45 Connector For Audio Video Equipment indoor use IP44, hope it can help you.