Writing 3D Waveguides With Femtosecond Pulses in Polymers

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Abstract
We present novel waveguide writing concepts in bulk PMMA. The writing relies on laser induced modification tracks that are completely surrounding a waveguide core. We found the optimal parameters to construct highly reproducible, single-mode waveguides with minimal propagation losses down to 0.6 dB cm -1 . Employing the best geometry, we demonstrate 2D and 3D Y-splitters that are the building blocks for creating complex optical networks such as sensors or lab-on-chip devices in polymer materials.
Funding Information
  • Deutsche Forschungsgemeinschaft (Mo850/16-2)
  • Germanys Excellence Strategy EXC (EXC 2122)
  • Cluster of Excellence PhoenixD (EXC 2122, 390833453)
  • Niedersächsisches Ministerium für Wissenschaft und Kultur

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