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Photoelastic optical directional couplers in epitaxial GaAs layers

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4 Author(s)
Benson, T.M. ; University of Sheffield, Department of Electronic & Electrical Engineering, Sheffield, UK ; Murotani, T. ; Houston, P.A. ; Robson, P.N.

Photoelastic channel optical waveguides showing strong lateral confinement at ¿=1.55 ¿m have been fabricated by etching a narrow slot through a Au Schottky contact deposited on an n/n+ GaAs layer. Such structures allow electro-optic directional coupler switches of short coupling length (~2 mm) to be easily realised.

Published in:

Electronics Letters  (Volume:17 ,  Issue: 6 )