3D shape sensor

In the frame of the EU-funded project "FleX-RAY", an inherently flexible x-ray, imaging detector using single photon avalanche photodiodes and inorganic scintillating fibres was developed. For the monitoring of the detector's shape, an optical 3D shape sensor is mounted on the x-ray detector. The 3D data from this data set can be used in combination with the x-ray detection data to generate an x-ray image corrected for the bending of the x-ray detector.

This archive contains the following data:(1) Sensor Description: The material, manufacturing, and layout of the sensor are described here. This information is relevant to understand the following data.(2) Sensor Data: The linear calibration function for each Bragg grating from a two-point calibration is stated. The Bragg wavelengths at a curvature of -17.3/m (bent around the y-axis) and the respective curvatures (recalculated from the calibration function) are given. This data can be used to generate the 3D shape data.(3) 3D Graph: The curvatures are interpolated and extrapolated to give a 3D graph. The 3D graph shows the 3D shape of the detector.

More information on the measurement system, the data acquisition, the calibration process, and the shape calculation can be found in the following publication:J. Koch, A. Droste, M. Angelmahr, G. Flachenecker, W. Schade, 3D shape-sensor based on integrated optics in ultra-thin glass, Proc. SPIE 12424, Integrated Optics: Devices, Materials, and Technologies XXVII, 1242417 (17 March 2023). DOI: 10.1117/12.2650357

This work has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 899634.