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Optoelectronic exclusive-OR (XOR) gate

An optoelectronic circuit that implements the exclusive-OR (XOR) logic function is described. The circuit uses two unmatched heterojunction phototransistors and a light amplifying optical switch (LAOS) monolithically integrated on an InGaAs/InP wafer grown by gas-source molecular beam epitaxy. The c...

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Bibliographic Details
Published in:IEEE photonics technology letters 1993-06, Vol.5 (6), p.686-688
Main Authors: Beyette, F.R., Geib, K.M., Feld, S.A., Hafich, M.J., An, X., Robinson, G.Y., Wilmsen, C.W.
Format: Article
Language:English
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Summary:An optoelectronic circuit that implements the exclusive-OR (XOR) logic function is described. The circuit uses two unmatched heterojunction phototransistors and a light amplifying optical switch (LAOS) monolithically integrated on an InGaAs/InP wafer grown by gas-source molecular beam epitaxy. The circuit was operated from DC up to the limit of the probe stand (90 kHz). The ease of operation and high ON/OFF contrast ratio (>50) make this XOR gate ideal for applications that require optical binary comparison or addition.< >
ISSN:1041-1135
1941-0174
DOI:10.1109/68.219711