FiSens specializes in fiber Bragg grating (FBG) sensor arrays and fiber-integrated spectrometers, offering high multiplexing capability and robust performance in harsh environments . Founded as a spin-off from the Fraunhofer Heinrich-Hertz-Institute in 2017, FiSens has developed fully automated manufacturing processes for high-volume production of fiber optic sensors . Their sensors are widely applied in structural health monitoring, medical instruments, and industrial applications, with over one million FBG sensors produced in more than 100,000 fiber arrays . FiSens merged with 5Io.Tech in 2025, further strengthening its technological and market position .
The engionic group includes engionic Femto Gratings GmbH, engionic Fiber Optics GmbH, and engionic CNC GmbH, providing a comprehensive portfolio of fiber optic components and sensors . They are pioneers in fs-laser-written Fiber Bragg Gratings, offering unique technological advantages over conventional FBG solutions . Engionic serves medical technology, industrial monitoring, energy sectors, and oil & gas, delivering both custom OEM solutions and large-volume serial production . Their expertise spans fiber optic assembly, precision CNC components, and complete sensing systems, making them a key player in Germany's fiber optic sensor market .
While several German companies excel in fiber optic sensing, FiSens GmbH and engionic AG stand out for their technological innovation, high-volume production capabilities, and broad application range. FiSens is particularly strong in FBG sensor arrays and integrated spectrometers, whereas engionic AG leads in fs-laser-written FBGs and complete OEM solutions for industrial and medical applications . Both companies are recognized internationally for their precision, reliability, and advanced fiber optic technologies.
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FiSens develops, manufactures, and markets accurate fiberoptic sensor solutions based on fiber Bragg grating (FBG) sensor arrays
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