The quantum-confined Stark effect observed in multiple quantum well (MQW) materials has been employed recently in a variety of electro-optic devices. This communication reports on some encouraging results achieved with a MQW-based, nonlinear vertical directional coupler. The device may be operated as an electrooptic switch through changes in the coupling length in response to large Stark shifts.
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Čada et al. (1991) studied this question.
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