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Optimized ARROW-Based MMI Waveguides for High Fidelity Excitation Patterns for Optofluidic Multiplexing.

Matthew A Stott1, Vahid Ganjalizadeh2, Maclain Olsen1

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Summary
This summary is machine-generated.

This study optimizes multimode interference (MMI) rib anti-resonant reflecting optical waveguides (ARROWs) for multiplexed fluorescence biosensors. Precise design of excitation waveguides and tapers enhances high-fidelity spot patterns for sensitive biomarker detection.

Keywords:
Dielectric waveguidesFluorescenceFluorescence spectroscopyIntegrated opticsMultimode waveguidesMultiplexingRib waveguides

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Area of Science:

  • Optics and Photonics
  • Biomedical Engineering
  • Materials Science

Background:

  • Multimode interference (MMI) waveguides enable optical signal multiplexing and de-multiplexing.
  • High-fidelity, wavelength-dependent spot patterns are crucial for multiplexed fluorescence optofluidic biosensors.
  • Accurate identification of multiple targets requires precise optical signal manipulation.

Purpose of the Study:

  • To explore design parameters for MMI rib anti-resonant reflecting optical waveguides (ARROWs).
  • To achieve high-fidelity spot patterns for biomarker excitation in optofluidic biosensors.
  • To optimize waveguide geometry for enhanced optical throughput and mode matching.

Main Methods:

  • Experimental fabrication and characterization of MMI rib ARROW waveguides.
  • Optical simulations to analyze waveguide performance and spot pattern generation.
  • Systematic investigation of waveguide width and etch depth parameters.

Main Results:

  • Identified critical design parameters, including excitation waveguide width and etch depth.
  • Demonstrated the impact of these parameters on input optical mode size and output spot fidelity.
  • Showcased the effectiveness of waveguide tapers for improving optical throughput via mode matching.

Conclusions:

  • Optimized MMI rib ARROW waveguide designs produce high-fidelity spot patterns.
  • Precise control over waveguide geometry is essential for sensitive multiplexed biosensing.
  • The findings facilitate the development of advanced optofluidic biosensor platforms.