Optical fiber fusion splicer can be said to be an indispensable tool product in the field of communication engineering. for people who have had experience in communication engineering, they must know the operation of the fusion splicer like the back of their hand, but it is such a fiber fusion splicer. do you know how he works?

Today we will introduce, if you understand, it may be helpful to the later melting work.

As we all know, an optical fiber is composed of an external protective layer, an inner protective layer, an aramid yarn, a coating layer, a cladding layer and a fiber core, in which we will use tools to remove the internal and external protective layer and the coating layer during welding, and the fusion splicer has only cladding and fiber core, so at present, the fusion splicer on the market are divided into cladding alignment fusion splicer and fiber core alignment fusion splicer according to the different standards of aligning optical fiber during fusion.

However, the real signal transmission is all done through the fiber core, so the fiber fusion splicer aligned with the fiber core will have higher precision and lower loss.

After introducing the optical fiber, let's take a look at how the optical fiber is fused.

Optical fiber fusion is almost completed by two parts:

First, optical fiber alignment.

When the fusion splicer is aligned with the optical fiber, its main working principle is that when the parallel light shines on the peeled optical fiber from the side, the light and dark images between the core and cladding and between the cladding and the air can be observed because of the refraction of the optical fiber. the horizontal and vertical images of the optical fiber can be observed by the mobile microscope.

Through the objective lens is focused on the camera cmos, get the analog video signal, and then through the analog / digital conversion circuit, into a digital signal.

The image is processed and recognized by the microprocessor in the welding machine, and the stepper motor is driven by the software algorithm for optical fiber alignment. After a series of complex algorithms and processing, we can directly see the alignment of the core and cladding on the splicer screen.

The following picture shows the alignment effect on the splicer screen through the X and Y angles of view.

Second, optical fiber fusion.

The principle of optical fiber fusion is relatively simple. When the optical fiber is aligned, the optical fiber is melted by a high voltage arc generated by the electrode discharge in the equipment, which is pushed forward immediately after melting, and the optical fiber is fused together by using the force between quartz molecules. In the process, the machine will estimate the fusion loss of the optical fiber by identifying the dislocation distance, deformation, air bubbles and other factors between the optical fiber joints.

Through the above introduction, do you have a more in-depth understanding of the optical fiber fusion splicer?