Reliable Imaging for Minimally Invasive Diagnostics

Holographic endoscopes enable imaging of deep-lying tissue with minimal invasiveness. They rely on a single flexible DECStL (Deformation Enduring Conveyance of STructured Light) waveguide to deliver light into the body and to reconstruct high-resolution images from the transmitted optical signals. Owing to their small diameter, such endoscopes rank among the least invasive tools in medical diagnostics.

A central challenge of this technology is the transport of light through flexible structured-light waveguides. Even minor bending or mechanical deformation can alter light propagation within the guide. These changes directly impair image reconstruction and can significantly reduce imaging quality.

The project aims to develop a DECStL waveguide that is markedly less sensitive to mechanical deformation. By tailoring the internal structure of the waveguide, light transport is to be stabilized and the robustness of holographic imaging improved. This will enable reliable operation under realistic, real-world conditions.

Beyond medical technology, the developed DECStL waveguide offers potential for further application areas. These include optical telecommunications as well as light-based processes in additive manufacturing, where precise and stable light guidance is essential.

The project is funded by the Free State of Thuringia under grant number 2023 VFE 0049 and co-financed by the European Union within the framework of the European Regional Development Fund (ERDF).