Preforms for Telecommunication Fibers

Heraeus Covantics has been a driving force in the evolution of preform sizes. With the RIC® process, we can turn your core rod into a full preform. The core rod with the correct b/a is placed into a cylinder and in a consecutive hot forming step the cylinder is collapsed onto the core rod.
We currently supply single mode preforms with an outer diameter of up to 230 mm. We are very flexible in preform size, providing the ideal size for your draw tower.

Heraeus Covantics large scale preforms allow for a most economic fiber draw, by increasing productivity as these preforms can run multiple days.

For details about the available fiber types and limitations, your draw tower may have please get in touch with us so we can find the perfect solution for your needs.

Two preforms with tip graphically staged on a blue background