AlGaAs-GaAs pnpn differential optical switch

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. >

[1]  K. Kyuma,et al.  Differential optical switching at subnanowatt input power , 1989, IEEE Photonics Technology Letters.

[2]  Geoffrey W. Taylor,et al.  Optoelectronic dynamic random access memory cell utilizing a three‐terminal N‐channel self‐aligned double‐heterostructure optoelectronic switch , 1989 .

[3]  W. Wiegmann,et al.  Room‐temperature excitonic optical bistability in a GaAs‐GaAlAs superlattice étalon , 1982 .

[4]  Kenichi Kasahara,et al.  Double heterostructure optoelectronic switch as a dynamic memory with low-power consumption , 1988 .

[5]  D Psaltis,et al.  Optical implementation of the Hopfield model. , 1985, Applied optics.

[6]  J. Ohta,et al.  GaAs/AlGaAs optical synaptic interconnection device for neural networks. , 1989, Optics letters.

[7]  Kazuo Kyuma,et al.  Differential optical comparator using parallel connected AlGaAs pnpn optical switches , 1989 .

[8]  G. W. Taylor,et al.  A new double‐heterostructure optoelectronic switching device using molecular‐beam epitaxy , 1986 .

[9]  Kazuo Kyuma,et al.  Optical Neural Networks : System And Device Technologies , 1989, Other Conferences.

[10]  S. M. Sze,et al.  Physics of semiconductor devices , 1969 .

[11]  A. Sasaki,et al.  Optoelectronic integrated device with light amplification and optical bistability , 1984, IEEE Transactions on Electron Devices.

[12]  A. L. Lentine,et al.  Symmetric self-electrooptic effect device : optical set-reset latch, defferential logic gate and differential modulator/detector , 1989 .

[13]  R. Hayes,et al.  A Pnpn Optical Switch , 1989, Other Conferences.

[14]  Leo M. F. Chirovsky,et al.  The Symmetric Self Electro-optic Effect Device , 1987 .

[15]  G.W. Taylor,et al.  Theory of electron conduction in the double-heterostructure optoelectronic switch (DOES) , 1987, IEEE Transactions on Electron Devices.

[16]  K. Kyuma,et al.  Picosecond Switching of Surface-Emitting Laser Diodes , 1988 .

[17]  C. Burrus,et al.  Novel hybrid optically bistable switch: The quantum well self‐electro‐optic effect device , 1984 .

[18]  K Mitsunaga,et al.  Optical flip-flop based on parallel-connected AlGaAs/GaAs pnpn structures. , 1990, Optics letters.

[19]  Kazuo Kyuma,et al.  Ultrafast switching characteristics of a bistable surface-emitting multiple quantum well distributed Bragg reflector laser , 1988 .