Founded in 2004 in Porto, Portugal, as FiberSensing, the company offers the most complete portfolio of FBG sensors to measure strain, temperature, tilt, acceleration, and displacement, as well as measurement units and software packages for interconnection to external systems. Fiber Bragg Grating (FBG) temperature sensors enable multipoint measurements over long distances, even in harsh environments, for reliable monitor Glue-on temperature sensor for diverse surfaces and materials. HBK FiberSensing is a business subsidiary of HBK – Hottinger Brüel & Kjær and a world leader in the development and production of advanced monitoring systems based on optical Fiber Bragg Grating (FBG) technology. Certified ISO 9001 and ISO 40005 standards. Opened in May 2025, the new site is five times larger than the previous one and will serve as a key European hub for. Our fiber optic sensors use a Gallium Arsenide (GaAs) crystal at the fiber tip, making them ideal for highly accurate temperature measurements in environments exposed to microwave radiation and high-frequency interference. The three core technologies are fluorescent fiber optic sensors, distributed temperature sensing (DTS).