Title :
Demonstration of polarisation rotation gate in GaAs/AlGaAs multiquantum well waveguides
Author :
Snow, P.A. ; White, Ian H. ; Penty, Richard V. ; Tsang, H.K. ; Su, Zizhou ; Sibbett, W. ; Soole, J.B.D. ; Leblanc, Herve P. ; Andreadakis, N.C. ; Caneau, Catherine
Author_Institution :
Sch. of Phys., Bath Univ., UK
Abstract :
Optical switching of femtosecond pulses is achieved at 1.5 mu m using as 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 degrees . Normalised transmission is increased by a factor of 44 by increasing the peak coupled pump power from 1 to 330 W.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; integrated optics; light polarisation; optical switches; optical waveguides; semiconductor quantum wells; 1 W; 1.5 micron; 330 W; GaAs-AlGaAs; MQW waveguide; birefringent gate; femtosecond pulses; multiquantum well waveguides; peak coupled pump power; polarisation rotation gate; refractive nonlinearity; switching mechanism;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19921512
