Optical bistability in vertical-cavity semiconductor optical amplifiers

Pengyue Wen, Michael Sanchez, Matthias Gross, Sadik C. Esener

Research output: Contribution to journalReview articlepeer-review

13 Scopus citations


We present an overview of the properties and applications of optical bistability in vertical-cavity semiconductor optical amplifiers (VCSOAs). The basic physics and analytical models of this optical nonlinearity are discussed. Experimental results obtained from a VCSOA operated in the 850 nm wavelength region are presented. Counterclockwise hysteresis loops are obtained over a range of initial phase detuning and bias currents. One hysteresis loop is observed experimentally with an input power as low as 2 μW when the device is biased at 98% of its lasing threshold. Numerical simulations based on the Fabry-Perot resonator model and rate equations we developed show good agreement with our experimental observations. In addition, a low input intensity high contrast (10:1) optical AND gate and 2R regeneration are demonstrated, We believe that bistable VCSOAs can significantly advance the prospect of a dense two-dimensional array of low-switching-intensity all-optical logic and memory elements.

Original languageEnglish (US)
Pages (from-to)6349-6357
Number of pages9
JournalApplied Optics
Issue number25
StatePublished - Sep 1 2006
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering


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