An InGaP/AlInGaP, surface normal, multiquantum well modulator operating at visible wavelengths is reported for the first time. Application of –6 V perpendicular to the plane of the quantum wells produces a 15% change in transmission at 645 nm, caused by a change in absorption in excess of 2900 cm-1.
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Blum et al. (1994) studied this question.
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