Absorption-modulated asymmetric Fabry-Perot (AFP) étalons have been widely reported. Although most rely on electro-optic effects,1,2 all-optical modulation with GaAs/AlGaAs qxiantum wells has also been observed.3 Here we report all optical switching in a normally off AFP with InGaAs/GaAs-strained quantum wells. The device exhibits a good contrast ratio and low insertion loss with the transparency of the GaAs at the operating wavelengths facilitating the integration of such devices with other optical components.

© 1991 Optical Society of America

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