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Main News Optical Fiber Welding

Optical Fiber Welding

29 February 2024

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In the process of creating an optical fiber network, welding work is typically used, representing the connection of multiple fibers into one structure, consisting of individual sections. To make changes to the network structure, it is divided and then the fibers are welded together.

Fiber welding is carried out using special equipment – a fusion splicer. The optical fusion splicer has different methods of welding work. They have their own distinctive features that are not typical for arc welding equipment.

What is the technology of fiber welding?

  1. Removing the insulation from the optical fiber. It is often necessary to remove the outer insulation of the cable, the modular part. Each module can consist of fibers ranging from 4 to 24.
  2. Using colorless gel to remove hydrophobic material from the optical cable.
  3. A sleeve (KSDZS) is put on the cable. It has a power rod and two heat-shrink tubes.
  4. The protective layer from the end of the fiber is removed by wiping with an alcohol compound.
  5. Twisting of protective fibers is carried out using a fiber cleaver. At the same time, the axis to the fiber cleavage is perpendicular. Deviations from the norm should not exceed 1.5 degrees.
  6. During fiber welding, they are placed in the clamps of the apparatus.
  7. Special devices allow for adjustment under a microscope. Modern fusion splicers have automatic adjustment.
  8. Heating is carried out by an electric arc, raising it to a certain temperature at the end of the fiber with a micro-gap. At this stage, fiber optic welding takes place.
  9. Assessment of attenuation and mechanical deformation of the apparatus is used to determine the strength of the connection.
  10. The KSDZS is moved to the location of the welding, and the section is placed in the heat shrink chamber.
  11. The welded fiber is placed in a cross, cassette, or splice plate. Fiber welding is completed.

What is used for fiber optic welding?

High levels of professionalism in fiber optic welding are necessary as it is a very complex process. A new opportunity has emerged to carry out welding work much faster and with higher quality than before. For this, the latest fusion splicers with an automatic cable section recognition system can now be used, allowing welding without additional buttons. This simplifies the master’s work.

After that, two cable parts are placed in the fusion splicer and the top cover is closed. Modern models can automatically close the cover during welding. In other apparatuses, a code set is used as a connection.

Afterward, the cable undergoes testing using optical testers and reflectometers, where the length of the optical cable and the signal attenuation at the welded section are measured.

Fusion splicer software.

There are already fusion splicers for optical fibers that allow welding with many common types of cables. The optical fusion splicing system has a personal mode with memory reserve. You can add your settings for welding that affect the quality of work.

In reality, this process does not require the largest number of modes. Optical cables usually have about 10 types.

The use of rare fiber models requires the installation of a specific operating mode. The welding process may take longer as the apparatus needs to deviate from the usual parameters and switch to new settings.

With the help of specialists, you can get inexpensive high-quality fiber optic welding performed using modern equipment.

 

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