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3D Polymer-Based 1 × 4 MMI Splitter.

Tomas Mizera1, Peter Gaso1, Dusan Pudis1,2

  • 1Department of Physics, Faculty of Electrical Engineering and Information Technology, University of Zilina, Univerzitna 1, 01026 Zilina, Slovakia.

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Summary
This summary is machine-generated.

Researchers developed a compact 3D optical splitter using multimode interference (MMI) and direct laser writing (DLW). This technology enables efficient 1x4 light splitting for integrated photonic devices.

Keywords:
3D splitterdirect laser writingmultimode interference splitterpolymer

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Area of Science:

  • Photonics
  • Optical Engineering
  • Nanofabrication

Background:

  • Miniaturization of photonic devices drives demand for compact optical splitting solutions.
  • Existing optical splitters often lack the small form factor required for advanced applications.
  • Three-dimensional (3D) light manipulation is crucial for next-generation optical systems.

Purpose of the Study:

  • To design, simulate, fabricate, and optimize a 3D optical splitter.
  • To achieve efficient light splitting in a small volume using multimode interference (MMI).
  • To explore the direct integration of the 3D optical splitter with optical fibers.

Main Methods:

  • Utilized 3D laser lithography, specifically the direct laser writing (DLW) process, for fabrication.
  • Designed a multimode interference (MMI) based splitter optimized for a 1550 nm wavelength.
  • Employed near-field measurement techniques to characterize the output performance.

Main Results:

  • Successfully designed and fabricated a 3D optical splitter.
  • Confirmed a 1x4 light splitting functionality.
  • Demonstrated the splitter's performance on a compact 158 µm long MMI device.

Conclusions:

  • The developed 3D MMI optical splitter offers a viable solution for miniaturized photonic systems.
  • The DLW fabrication method allows for precise and compact optical device creation.
  • The device shows potential for direct integration into optical fiber systems.