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LEONI relied consistently on the Photonics - one of the key technologies of the 21. century


The  Business Unit Fiber Optics of the LEONI Group is one of the leading suppliers of high quality fused silica, preforms and optical fibers for special industrial and optical applications, sensor technology and optical analysis, scientific purposes, the telecommunication sector and laser medicine.

LEONI offers a unique product portfolio at every stage in the value chain: from fused silica to preforms and drawn fibers, to fiber-optic cables and entire optical fiber systems fitted with inhouse-design components developed by LEONI.

Throughout the world, there are only about a dozen enterprises that are masters of the basic optical technologies for the development and fabrication of optical fibers. LEONI Fiber Optics is one of them. We deliver fiber optical products not only for general applications but also where systematic problem solutions are needed.

We employ more than 600 colleagues who develop and fabricate fiber optical systems and special components.

We operate seven production sites throughout Germany, i.e. in Central Franconia, Thuringia, Rhineland-Palatinate, North Baden and Berlin. Our subsidiary LEONI Fiber Optics Inc. represents LEONI Fiber Optics on the North American continent with a site in Williamsburg (Virginia). We furthermore operate a site in Changzhou, Jiangsu Province in China.