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Nonlinear Black Phosphorus for Ultrafast Optical Switching.

Siam Uddin1,2, Pulak C Debnath1,2, Kichul Park1

  • 1Center for Opto-Electronic Materials and Devices, Korea Institute of Science and Technology (KIST), Seoul 02792, South Korea.

Scientific Reports
|February 28, 2017
PubMed
Summary

Black phosphorus (BP) demonstrates efficient ultrafast optical switching. This research shows BP enhances wavelength conversion performance in fiber devices for high-speed broadband applications.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Photonics

Background:

  • Two-dimensional (2D) black phosphorus (BP) possesses unique electronic and optical properties.
  • Its tunable bandgap and anisotropic in-plane characteristics make it suitable for nonlinear optical applications.

Purpose of the Study:

  • To investigate ultrafast optical switching utilizing the nonlinear optical properties of BP.
  • To explore BP's potential in high-speed broadband optical applications.

Main Methods:

  • Utilizing BP-deposited D-shaped fiber for four-wave-mixing (FWM).
  • Investigating wavelength conversion for modulated signals up to 20 GHz.

Main Results:

  • Achieved efficient wavelength conversion through FWM with BP.

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  • Demonstrated an approximate 33% increase in performance parameter after incorporating BP.
  • Verified BP's capability for high-speed optical switching in evanescent field interactions.

    • Conclusions:

    • Black phosphorus is a promising material for ultrafast optical switching.
    • BP-based devices show potential for efficient, high-speed broadband photonic applications.