A new optical switching and logic device, the monolithic optoelectronic transistor (MOET), is demonstrated. The MOET is an integrated circuit consisting of a p-i-n photodiode, a resonant tunneling diode, a multiple-quantum-well modulator, and a field-effect transistor. The device can function as an optical inverter or NOR gate. Present devices switch at an input optical power of 12.5 μW and have a large-signal optical gain exceeding ten. The advantages of the MOET include abrupt switching thresholds, saturated ‘‘on’’ and ‘‘off’’ states, and nonlatching operation.
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Aull et al. (1993) studied this question.
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