NEW: We are now Heraeus Covantics.

Good Glass for Great Fiber Solutions

Close up photo of a bundle of optical fibers

At Heraeus Covantics, we lead the industry in producing high-quality glass that enables our customers to develop cutting-edge technologies based on optical fibers. We pride ourselves on being a valuable partner to our customers: we provide the good glass, they develop great fiber solutions.
The silica glass we produce for Specialty Fiber applications is Fluosil®, a brand that has been synonymous with purity, reliability and quality for decades.
Our silica glass enables our customers to produce high-performance fibers for industrial manufacturing, medical lasers and scientific applications. 

Benefits of our glass

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Wide Transmission Spectrum

Bandwidth of material transmission is vital for the material effectiveness in fiber optics. Heraeus Covantics fused silica is specially designed to provide a broad transmission spectrum, optimizing it for improved light passage over various spectral range

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Outstanding Resistance

Transmission efficiency and resistance to damage are critical for high-power laser and UV applications. Heraeus Covantics fused silica stands out by providing exceptional transmission capabilities and an unparalleled high damage threshold

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High Purity

High-power applications demand materials with minimal contamination and low absorption. The exceptional purity of Heraeus Covantics fused silica renders it perfectly suited for these stringent requirement

Ensuring Fiber Integrity

Contaminants have the potential to cause fiber breakage during the drawing process. With Heraeus Covantics fused silica, a synthetic gas phase deposition process is employed to achieve low breakage rates

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Precision in Geometrical Design

The use of tight tolerances in the initial fiber materials leads to superior quality standards. Heraeus Covantics produces materials with precise geometric parameters, with available processes to further refine these tolerances

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Quality Assurance and Reliability

Heraeus Covantics oversees every stage of the production process, ensuring traceability from raw material to end product. With a proven track record of delivering consistent quality for decades, we are dedicated to upholding our legacy of reliability

Discover our Specialty Fiber Product Portfolio

A photo of a preform before being drawn into fibers

Preforms

Specialty Fiber Preforms - meticulously engineered to provide exceptional precision and consistency for advanced fiber optic applications.

Plasma Deposition Service

We can apply our sophisticated Plasma Outside Deposition (POD) process on your own core rod.
A variety of tubes used for the manufacture of Specialty Fibers

Tubes

High purity fused silica tubes are used in the production of specialty fibers as substrate material or cladding material or are redrawn into capillaries.
A photo of many sizes of solid fused silica rods

Rods

High purity fused silica rods are the basis for many types of specialty fiber preforms and applications.

Capillaries

Heraeus Covantics supplies capillaries for combining fibers in laser systems. Depending on your system configuration different material grades are available.