Special optical fibers with elevated aluminum content for high temperature or medical applications
Modern optical fibres owe their success to the long-range signal transmission in tele¬com¬munications. The high purity achieved when producing silica preforms by the mCVD method, yields transmission losses as low as 0.18 dB/km at a wavelength of 1.5 m. Allowing to transmit signals over hundreds of kilometres with virtually no losses.
However, in the eighties and nineties it was recognized, that there is much more to optical fibres than signal transmission: if loss requirements are relaxed and in the range of 0.1 dB per meter or higher, a wealth of new production methods and hence fibre types and applications are possible to achieve.
In the last 3 decades many new fibre production methods and fibre types have emerged, such as microstructured optical fibres, fibres with active cores and hollow core fibres, just to name a few. Further, with the application of powder-in-tube process, material compositions of core and cladding can be used, which are not suitable for mCVD based methods.
As a doctoral student in the Applied Fibre Technology at the BFH with a Mechanical Design Engineering (MSc) back-ground, the development, study and characterization of special micro-structure optical fibres and their diverse ap-plications and impact on cutting-edge laser technologies for the manufacturing industry, has become the motivation for the pursuit of the current research degree.
Interests related to product design, development and manu-facturing with lasers have led to the contribution with Brit-ish and Swiss industrial partners, achievements include al-ternative medical devices through laser welding, direct-write and sinter processing of copper nanoparticles for PCBs, de-velopment of special microstructured fibre for high temper-ature applications and FE models. Other interests involve reading, hiking, painting, mothering and netflix.