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AlGaAs-GaAs pnpn differential optical switch

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4 Author(s)
Hara, Kunihiko ; Mitsubishi Electric Corp., Hyogo, Japan ; Kojima, K. ; Mitsunaga, Kazumasa ; Kyuma, K.

A differential optical switch based on parallel-connected AlGaAs-GaAs pnpn structures is presented. Continuous input light makes it possible to discriminate between two optical inputs with a power difference of as low as 0.1 nW. The minimum operating energy with pulse inputs was 400 fJ. With the introduction of a storage operation of pnpn structures, the optical S-R flip-flop operation is also demonstrated with a 7.2-pJ optical input energy. The expansibility of the 2-D array is attractive in optical parallel processing systems, especially in optical neural networks

Published in:

Quantum Electronics, IEEE Journal of  (Volume:28 ,  Issue: 5 )

Date of Publication:

May 1992

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