Silicon tetrachloride (SiCl4) and germanium tetrachloride (GeCl4) are the main raw materials for the production of optical fibre. Germanium is used to control the index of refraction of the optical fibre.
Umicore produces the highest consistent quality GeCl4 in the industry. Thanks to its very high purity, light transmission in the core of optical communication fibres can be maximized.
Our customers are able to manage their germanium price volatility exposure thanks to Umicore’s extensive metals management expertise of spot purchase, hedging, tolling and metal leasing. This is confirmed by our proven track record with the majority of optical fibre manufacturers. We guarantee a secured germanium supply chain and provide unique solutions to treat a wide variety of germanium-containing recycling streams.