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Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 39,
  • Issue 13,
  • pp. 4390-4394
  • (2021)

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 ${\rm cm}^{-1}$ . 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.

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