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O: Fachverband Oberflächenphysik

O 71: Poster: Plasmonics and Nanooptics

O 71.6: Poster

Mittwoch, 20. März 2024, 18:00–20:00, Poster D

Scalable 3D Printing of Micro-Optical Elements for Optical Fibres — •Mika Mc Keever and Stefan Linden — Physikalisches Institut, Universität Bonn, Nussallee 12, 53115 Bonn, Germany

3D printing via direct laser writing, utilising two-photon polymerisation has revolutionised the fabrication of micro-optics for optical fibre applications. Previous advancements include the successful printing of optical devices, such as collimating lenses, directly onto the ends of optical fibre. However, the existing technique presents challenges, particularly the manual printing process for each individual fibre, resulting in time-intensive production and difficulties in aligning optical elements with the fibre core. This work addresses these issues by introducing a technique for printing hanging optical elements on a glass substrate, which can be attached to the fibre end. This is achieved by inserting the fibre into a mask that is printed on top. This method enables the simultaneous printing of multiple optical elements, accelerating production, while maintaining the same printing parameters as direct fibre printing. Moreover, the use of the mask facilitates alignment of the optical elements with the fibre core. By adopting this approach, optical elements with dimensions of up to 300 micrometres can be printed.

Keywords: direct laser writing; fibre optics; 3D printing