Demonstration of polarisation rotation gate in GaAs/AlGaAs multiquantum well waveguides

P. A. Snow, I. E. Day, I. H. White, R. V. Penty, H. K. Tsang, R. S. Grant, Z. Su, W. Sibbett, J. B.D. Soole, H. P. Leblanc, A. S. Gozdz, N. C. Andreadakis, C. Caneau

Research output: Contribution to journalArticlepeer-review


Optical switching of femtosecond pulses is achieved at 1.5µm using a refractive nonlinearity in a GaAs/AlGaAs MQW waveguide birefringent gate. The switching mechanism is demonstrated with a maximum throughput of 54% of the available transmitted power corresponding to an effective phase shift between polarisations of 90°. Normalised transmission is increased by a factor of 44 by increasing the peak coupled pump power from 1 to 330 W.

Original languageEnglish
Pages (from-to)2346-2348
Number of pages3
JournalElectronics Letters
Issue number25
Publication statusPublished - 1 Jan 1992


  • Nonlinear optics
  • Optical switching
  • Semiconductor devices and materials
  • Waveguides

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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