Analysis of thermal limitations in high-speed microcavity saturable absorber all-optical switching gates

David Massoubre, J.L. Oudar, A. O'Hare, M. Gay, L. Bramerie, J.-C. Simon, A. Shen, J. Decobert

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Abstract

The limitations owing to device heating and thermo-optic effects in high-speed quantum-well microcavity saturable absorber devices are investigated both theoretically and experimentally. A simplified theoretical description of the device electronic, thermal, and optical properties is developed and applied to the modeling of the device switching characteristics for reamplification + reshaping step (2R) all-optical regeneration. These predictions are compared to nonlinear optical measurements performed with switching pulses of fixed duration and variable repetition rate on two devices with significantly different thermal properties. It is shown that proper optimization of the device thermal properties is crucial to avoid the degradation of device performance at high bit rate. It is also shown that the negative effects of optically induced heating on the switching contrast may be compensated to some extent by operating the device on the long wavelength side of the microcavity resonance
Original languageEnglish
Pages (from-to)3400-3408
Number of pages9
JournalJournal of Lightwave Technology
Volume24
Issue number9
DOIs
Publication statusPublished - 1 Sep 2006

Keywords

  • all-optical switching gates
  • thermal limitations
  • microcavities

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