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Related Experiment Videos

Optical bistability in vertical-cavity semiconductor optical amplifiers.

Pengyue Wen1, Michael Sanchez, Matthias Gross

  • 1Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla 92093-0407, USA. pwen@ece.ucsd.edu

Applied Optics
|August 17, 2006
PubMed
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Optical bistability in vertical-cavity semiconductor optical amplifiers (VCSOAs) exhibits hysteresis loops at low input power. These bistable VCSOAs show promise for all-optical logic and memory elements.

Area of Science:

  • Optoelectronics
  • Nonlinear Optics

Background:

  • Optical bistability is a key phenomenon in nonlinear optics.
  • Vertical-cavity semiconductor optical amplifiers (VCSOAs) offer potential for integrated optical devices.

Purpose of the Study:

  • To investigate the properties and applications of optical bistability in VCSOAs.
  • To demonstrate the feasibility of VCSOAs for all-optical signal processing.

Main Methods:

  • Analytical modeling of optical nonlinearity in VCSOAs.
  • Experimental characterization of VCSOA bistability at 850 nm.
  • Numerical simulations using a Fabry-Perot resonator model and rate equations.

Main Results:

  • Observed counterclockwise hysteresis loops in VCSOAs.

Related Experiment Videos

  • Demonstrated hysteresis with input power as low as 2 muW near lasing threshold.
  • Achieved 10:1 contrast optical AND gate and 2R regeneration.

    • Conclusions:

    • Bistable VCSOAs exhibit promising characteristics for low-power all-optical switching.
    • These devices can advance the development of dense 2D arrays for optical logic and memory.