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Tunable ultrafast nonlinear optofluidic coupler.

Marius Vieweg1, Sebastian Pricking, Timo Gissibl

  • 114th Physics Institute and Research Center Scope, University of Stuttgart, Stuttgart, Germany. M.Vieweg@physik.uni‑stuttgart.de

Optics Letters
|March 27, 2012
PubMed
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We developed a novel optofluidic nonlinear coupler using liquid carbon tetrachloride (CCl4) for ultrafast switching. This tunable device offers flexible designs for nonlinear optics with switching times under 1 picosecond.

Area of Science:

  • Optofluidics
  • Nonlinear Optics
  • Materials Science

Background:

  • Photonic crystal fibers offer unique light-confining properties.
  • Ultrafast nonlinear optical effects are crucial for high-speed signal processing.
  • Liquid nonlinear materials provide tunable optical responses.

Purpose of the Study:

  • To fabricate and demonstrate a novel optofluidic nonlinear coupler.
  • To investigate the power-dependent switching characteristics of the device.
  • To explore temperature-based tuning of nonlinear coupling.

Main Methods:

  • Selective filling of a photonic crystal fiber with liquid carbon tetrachloride (CCl4).
  • Fabrication of an optofluidic nonlinear coupler.
  • Demonstration of power-dependent optical switching.

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  • Utilizing the thermo-optical effect of liquids for tuning.

    • Main Results:

    • Successful fabrication of an optofluidic nonlinear coupler.
    • Demonstrated power-dependent switching behavior.
    • Showcased temperature-tunable coupling strength due to the thermo-optical effect of CCl4.
    • Achieved switching times below 1 picosecond.

    Conclusions:

    • The developed optofluidic nonlinear coupler exhibits ultrafast switching.
    • The large thermo-optical effect of CCl4 enables tunable nonlinear coupling.
    • This technology paves the way for flexible designs of tunable ultrafast nonlinear devices.