
Optical Sensor Technology
Fiber optic sensors for precise measurement under demanding conditions.
FOS Inon Fiber Optics develops and manufactures fiber optic measurement systems that operate reliably even under extreme environmental conditions. Our solutions enable continuous process monitoring across industrial applications, from energy technology and the chemical industry to flame monitoring in power plants.
Sensor Heads for Demanding Operating Conditions
We develop fiber optic sensor heads tailored to your specific requirements. The sensors are resistant to high temperatures (up to 400 °C), electromagnetic interference and chemically aggressive media. Through the use of specialised fiber technology, we enable precise signal acquisition directly at the measurement point, robust, durable and reproducible.
Process Analytical Technology (PAT) and Real-Time Monitoring
Our fiber optic PAT probes enable uninterrupted monitoring of chemical and physical parameters in real time. Through in-line analytics, you can improve product quality, reduce waste and increase the efficiency of your production, in industries such as pharmaceuticals, chemicals and food technology.
Our Services at a Glance
Reliable monitoring in high-performance thermal processes.
Our systems reliably monitor combustion processes under extreme conditions. With highly heat-resistant optical fiber light guides, we ensure the stable operation of your plants in energy generation and industry, precise, robust and durable.
Custom measurement heads for demanding environments.
We develop sensor solutions for environments where conventional technology fails. Our fiber optic heads are insensitive to electromagnetic interference and chemically resistant, ideal for precise measurements of temperature, pressure or position.
Real-time analytics for reproducible product quality.
Optimise your production through fiber optic in-line analytics. Our PAT probes enable non-destructive monitoring of chemical reactions and concentrations in real time, for greater efficiency and end-to-end quality control.
Manufacturing Process
To ensure our light guides and fiber optic products meet the highest standards, we rely on a specialized manufacturing process. This allows us to guarantee exceptional chemical and tactile robustness so they can perform optimally in their respective environments. Precision is a critical factor in this, true to our motto: “Making the impossible happen.”
Materials Used
- Borosilicate: Glass with high temperature resistance and chemical resilience.
- PMMA (Polymethylmethacrylate): A thermoplastic, lightweight plastic with high light transmittance.
- Silica-Hard Clad: A robust plastic coating for improved strength and durability.
- Silica-Silica for UV and NIR Wavelengths: Our specialized glass fibers, optimized for the transmission of light in the ultraviolet (UV) and near-infrared (NIR) ranges.
Optional Specifications:
- Various apertures available
- Polarization can be maintained
- Anti-reflection coating possible
- Various lengths, diameters, bending radii, converters, and vacuum feedthroughs optional
- Various connectors and ferrules suitable for industry and medicine
Quality / made in Germany
Our optical sensor technology systems are developed and manufactured to the highest quality standards at our facilities in Germany. We deliver fiber optic measurement solutions that provide reliable and precise data even under extreme conditions such as high temperatures, chemically aggressive media or strong electromagnetic fields.
Our sensor heads and probes are tailored to your specific measurement tasks. Through extensive manufacturing depth and continuous quality controls in accordance with ISO 9001:2015, we ensure end-to-end traceability and process reliability, whether in process analytical technology (PAT), flame monitoring or industrial metrology. We support you from the initial specification through to series production.
Learn more
Do you need further information, a customized quote, or expert advice for your project? We are always available to assist you.

Reliability doesn’t happen by chance.
At FOS Inon Optics, quality is not just a promise—it is a standard that can be measured. Our development and manufacturing processes for fiber-optic systems are ISO 9001:2015 certified. This establishes the foundation for reliable performance, reproducible results, and trust wherever optical precision is critical.




