Optical flip-flop based on parallel-connected AlGaAs/GaAs pnpn structures
- 1 July 1990
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 15 (13) , 749-751
- https://doi.org/10.1364/ol.15.000749
Abstract
An optical flip-flop using parallel-connected pnpn (thyristor) structures is demonstrated for the first time to our knowledge. We utilize the differential optical switching technique for inverting the state of the flip-flop and the slow dissipation of carriers stored in the gate layers of pnpn structures for retaining the state. The flip-flop operation with 7.2 pJ of optical input energy was attained by using an AlGaAs/GaAs device. The expansibility to monolithic two-dimensional arrays, the high on–off contrast, and the high optical gain of the flip-flop are useful in the design and fabrication of optical parallel processing systems.Keywords
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