Brief Introduction of Optical Fiber Preform

What is Optical Fiber Preform? Optical fiber preform, also known as optical rod or optical fiber mother rod. It is a cylindrical quartz glass. Fiber Preform is also the core raw material for manufacturing optical fiber. Optical fiber is formed by drawing the preform, which can ensure that light is transmitted with minimal loss.

Optical fiber preform has a special refractive index profile. Its main function is to provide stable connection and protect optical fiber during optical fiber connection. Which ensuring the strength and service life of optical fiber. The types of fiber optic preform are mainly divided according to optical fiber. For example, single-mode optical preform, multi-mode preform, special fiber preform, etc. In the manufacturing process of fiber preform, a variety of process methods are usually used. The most common of which are chemical vapor deposition (MCVD), axial vapor deposition (VAD), outside-rod chemical vapor deposition (OVD) and plasma activated chemical vapor deposition (PCVD).

Function of Optical Fiber Preform

1.The most important function of optical fiber preform is that it is the basis for manufacturing optical fiber. Through the drawing process, the preform can be drawn into a thin and long optical fiber. And then form an optical fiber cable.

2.The optical fiber made of  preform has good transmission characteristics. At the same time, it can support higher transmission rates and wider frequency bands.

Feature of Optical Fiber Preform

Good mechanical properties

The specially treated optical fiber preform has good stability during the process of drawing optical fiber. And it is not easy to break the optical fiber. At the same time, the diameter and length of the optical fiber can be precisely controlled according to the needs.

Accurate Refractive Index Profile

The  preform made by a specific manufacturing process has a structure with a precisely controlled refractive index profile. This structure enables the optical fiber to have lower attenuation and dispersion when transmitting optical signals. Thus supporting long-distance, high-speed optical signal transmission.

High Purity

The fiber preform is made of high-purity silica (SiO₂) and other dopants. Which ensure that the optical fiber has excellent optical properties and transmission characteristics.

Conclusion

As the core raw material for manufacturing optical fiber, optical fiber preform plays a vital role in the communications industry. In the future,  preform manufacturing equipment will develop in a more efficient and intelligent direction. If you don’t know how to choose an optical fiber preform, please contact us. We have been deeply involved in the industry for 11 years and have professional communications solutions.