Fiber Bragg Grating Sensors
Since 2010 we have pioneered the femtosecond laser point-by-point inscription of fiber Bragg gratings and other innovative sub-micron structures within optical fibers. Learn more about our technology.
Advantages of FBG Sensing
Compared to their electrical counterparts, sensors within optical fibers have fundamental advantages like totally electromagnetic immunity. Most importantly, one can interrogate lots of sensors within a single optical fiber at arbitrary locations along both great and minimal distances, besides of being as thin as a human hair, weighing next to nothing, and running robustly at high temperatures or even in highly corrosive and high radiation environments.
- Up to 30 sensors in one single fiber
- Ultrathin and lightweight
- Electromagnetic immune
- Safe in explosive and high radiation environments
Shaping Spectra at Nanoscale
Automatic & Precise
Direct Writing through Coating and Cladding
Based on our proprietary developed femtosecond laser processing technology we produce fiber Bragg gratings (FBGs) fully automatic point by point. We directly inscribe the FBGs into the core of the fiber without any interference with the surrounding cladding and coating.
Our manufacturing process has an exceptional geometrical precision of less than 20nm along the entire FBG structure. Moreover any inscribed modulation of the refractive index of the glass core is spectrally documented via an inline-quality inspection control.
Perfectly Tailored Sensors
Customization of FBG arrays
Without any additional production steps like decoating or splicing we are able to offer FBGs at arbitrary positions along the fiber. Whether 24 or up to a 1000 FBGs packed tightly within minimal adjacent distances of only 1mm or distributed along the fiber with greater distances of several meters, we can produce it for you.
Due to our direct writing fs-laser process we are able to produce FBGs in almost any optical fiber available on the market having coatings like acrylate, polyimide or even carbon polyimide or within specialty fibers like pure silica core, bend-insensitive or radiation resistant fibers.