Vapor Axial Deposition (VAD), a core manufacturing technology for optical fiber preforms, plays a pivotal role in fiber production. The quality of VAD-preformed fibers directly determines the final optical fiber's performance. This deposition method is widely used in manufacturing various fiber types, particularly high-performance fibers such as specialty fibers and communication fibers. VAD-preformed fibers typically exhibit superior transmission characteristics and low loss, significantly driving the rapid development of modern communication technologies.

VAD main features ：

Homogeneity: The VAD process enables high-quality deposition, forming uniform optical fiber preforms and reducing defects.

Controllability: The composition and deposition rate of the material can be precisely controlled, so that the optical properties of the resulting fiber can be adjusted.

High purity: As the gas compounds used can decompose at high temperatures, VAD technology typically yields silicon or germanium materials of high purity.

the key technical indexes

Device Components