Data Communications & Networks

We connect people

With high-performance, future-proof and cost-effective multimode and singlemode fibers, we support cable solutions for high-speed data transmission in local networks and data centers at speeds of 100 Gigabit Ethernet and beyond.

FiberConnect indoor cables are an ideal choice for producing assembled connection cables for any conceivable network topology. Our universal cables can be deployed both indoors and outdoors, and as industrial cables in harsh industrial environments. Features include oil resistance and drag chain suitability.

We produce preassembled, factory-tested cabling systems. Short installation times are a key advantage here. The MPO/MTP® multi-fiber connector for optical fibers features a high packing density to protect your initial data center investment.

Our special optical components FiberSwitch and FiberSplit help you to perform functional monitoring of your highly complex optical networks and activate existing network redundancies at blazing-fast speeds when required.

Your advantages

  • All components for passive optical networks from a single source
  • OEM branding possible
  • Regional product approvals (UL, CPR, CE, etc.)
  • Global presence

Our strengths

  • Complete value chain (raw materials, fibers, cables, assemblies, and special optical components)
  • Highest quality standards
  • Joint development projects with early involvement in product development
  • Custom builds to customer requirements
  • Excellence in production and logistics

Fields of use

  • Data centers and local networks
  • Network suppliers
  • Active component manufacturers
  • Telecommunications networks
  • Broadcasting
  • Multimedia

Other products

  • AOC (active optical cables)

We look forward to your inquiry. Talk to us today.



Please contact us for further information. We look forward to your inquiry.

Markus Fieseler

Europe, Africa, and Asia(excl. China)
Phone +49 36764-81-100

Phone +86 519-8988-7783

North and South America
Phone +1 757-258-4805

Sales network

Contact form

Fiber Optics

Light switching · Light transportation· Light distribution


Innovative fiber optics solutions



Light switching for optical systems



Light Distribution for Optical Systems


Low fire-hazard cables complying with the EU Construction Products Regulation

Maximum safety with B2ca cables from LEONI


Fireproof cables for use in buildings

in accordance with the

EU Construction Products Regulation


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