Fiber Optics for Industry and Science
Custom Fiber Assemblies: Fiber optic cables and fiber bundles for applications in science and industry from a German fiber optics manufacturer.
Schedule a ConsultationCustom-Tailored Fiber Optic Solutions
Welcome to your leading global provider of custom-tailored fiber optic solutions. As specialists in multimode fibers and advanced manufacturing technologies, we develop individual solutions based on your specific project requirements. Extensive industry knowledge of the fibers available on the market, paired with the maximum precision of mechanical components with eccentricity deviations of <15µm, forms the foundation of our expertise and quality. This allows us to guarantee reliable and highly efficient customer solutions in the fiber optics sector.
Schedule a ConsultationWhy FOS Inon Fiber Optics?
Global Partnership
By your side, worldwide. We are an internationally operating company with a global network of partners. No matter where you are located, we are there for you and will support you with your projects.
Custom-Tailored Solutions
Fiber optic cables individually tailored to your project. Our experts are happy to advise you and will work with you to develop the optimal solution for your project.
Highest Quality
We use state-of-the-art tools and technologies in the manufacturing of our fiber optic cables. Our products undergo strict quality controls to ensure they meet our high standards.
Reliability
Solutions that deliver what they promise. Our fiber optic solutions are robust, durable, and reliable. You can count on our products to function flawlessly even under demanding conditions.
Expertise
Benefit from our expert knowledge and our many years of experience in the fiber optics industry. Our team of experts is happy to advise you and will support you in the planning and implementation of your projects.

Our Fiber Optic Solutions
Fiber Assemblies
Custom fiber optic cable solutions for a variety of applications, including UV curing, quality control applications, spectroscopy, light transmission for welding, and more. By using high-quality raw materials and continuously training our employees who control the key positions in the production process, we can guarantee you consistently high quality.
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Flame Monitoring
Optical fiber lances are an extension of flame monitoring systems and are well-suited for applications with strong vibrations or limited space. They are robust and temperature-resistant up to 400°C. Optical fiber lances can be mounted directly at the fuel outlet of the burner assembly, thereby capturing the flame radiation from a short distance. This achieves high flame intensity and security against extraneous light in multi-burner systems.
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Optical Fibers
For our optical fibers, glass fibers are available for all sensors and spectral ranges. The lengths of the optical fibers depend on the local conditions and are determined in collaboration with the customer. Optical fiber cables and assemblies for temperature measurement. The cables are robust and insensitive to vibrations and extreme temperatures.
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Flexible Light Guides
Flexible light guides, custom-tailored to your requirements in outstanding quality. Thanks to years of specialized industrial knowledge and experience, as well as the highest quality standards, our flexible light guides are used in many different industries.
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Technical 3D Printing for Prototypes
In photonics, every micrometer counts—and in medical technology, every decision matters. Our technical 3D printing is engineered to meet these demands. At FOS Inon Fiber Optics, we utilize additive manufacturing not as a gimmick, but as a high-precision tool for real-world technological challenges.
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Engineering Services
From Concept to Market Readiness – Precision That Makes the Difference. The engineering competence of FOS Inon Fiber Optics is the foundation for innovative and marketable products in medical technology and photonics.
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Laser Marking
Precision at the Speed of Light – for Optical Components and Medical Devices. FOS Inon Fiber Optics combines advanced manufacturing techniques to ensure the highest precision and quality in both the marking and production of components.
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CNC Parts
CNC-manufactured components form the backbone of many high-technology applications—from photonic systems to medical devices. At FOS Inon Fiber Optics, we combine a deep understanding of optical and precision mechanical requirements with state-of-the-art CNC technology. The result: CNC parts that are more than mere geometry—they are functionally integrated solutions engineered for the highest precision.
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Industry-Oriented Solutions
FOS Inon Fiber Optics represent more than mere component manufacturing. We provide sophisticated, integrated solutions—tailored to the demanding requirements of the medical technology and photonics industries.
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Lighting and Sensor Assemblies
Through our partner company, you can obtain individual components such as light projectors, light guides, and end-optics, as well as complete systems like starry skies or light nets. They supply assembled light guide cables for sensor manufacturers.
(Through our partner company Synova Licht- und Sensortechnik)
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About FOS Inon Fiber Optics
FOS Inon Optics is a medium-sized, owner-managed manufacturer of fiber optic cables from Germany, based in Niederschelden-Siegen. FOS Inon Optics has always manufactured sophisticated, custom-specific fiber optic cables for sectors such as power plants, fiber-optic flame detection, spectroscopy and microscopy, quality control, UV curing, as well as for other lighting and laser applications.
The family-owned company successfully focuses on niche products in the laser and analytics industries. Its business success is based on investments in state-of-the-art equipment, experienced and highly qualified employees with excellent technical knowledge, and the “Made in Germany” quality standard. The history of this young company proves that traditional values and developments combined with modern technologies guarantee high-quality products.
With the help of high-end tools, we achieve top quality. Whether you need radiation-resistant fibers in special lengths or temperature-resistant variants, trust in our expertise and benefit from our highly developed system for maximum accuracy in your project.
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Our certification to ISO 9001:2015, achieved less than two years after the company’s founding, proves that our commitment to quality is not just an idea. We provide our customers not only with the promise of quality and reliability, but also with certified assurance.