Integrated optical NOR gate

A two-input optical NOR gate structure is proposed and demonstrated. The NOR gate is fabricated from a vertically integrated heterojunction phototransistor and light emitting diode InGaAs-InP structure grown by gas source molecular beam epitaxy. Operation up to 500 kHz is demonstrated for devices fabricated with 250- mu m*250- mu m mesas. Analysis indicates that operation at frequencies up to 50-100 MHz is possible for smaller mesa areas. ON/OFF optical contrast ratios as high as 30 were measured.<<ETX>>

[1]  J. P. Harbison,et al.  Optically controlled surface‐emitting lasers , 1991 .

[2]  S. A. Feld,et al.  Integrated optical inverter using light amplifying optical switch (LAOS) , 1991 .

[3]  H. Scott Hinton,et al.  Architectural considerations for photonic switching networks , 1988, IEEE J. Sel. Areas Commun..

[4]  Wood,et al.  Electric field dependence of optical absorption near the band gap of quantum-well structures. , 1985, Physical review. B, Condensed matter.

[5]  Fred R. Beyette,et al.  Electrical and optical feedback in an InGaAs/InP light-amplifying optical switch (LAOS) , 1991 .

[6]  A. Huang,et al.  Architectural considerations involved in the design of an optical digital computer , 1984, Proceedings of the IEEE.

[7]  G. R. Olbright,et al.  Cascadable surface-emitting laser logic: demonstration of Boolean logic , 1991 .

[8]  C.W. Wilmsen,et al.  Switching light with light , 1991, IEEE Circuits and Devices Magazine.

[9]  J. Shibata,et al.  Integration of InGaAsP/InP optoelectronic bistable switches with a function of optical erasing , 1990, IEEE Electron Device Letters.

[10]  Y. H. Lee,et al.  3‐pJ, 82‐MHz optical logic gates in a room‐temperature GaAs‐AlGaAs multiple‐quantum‐well étalon , 1985 .

[11]  L.A. D'Asaro,et al.  A 2 kbit array of symmetric self-electrooptic effect devices , 1990, IEEE Photonics Technology Letters.

[12]  J.P. Harbison,et al.  Optically controlled surface emitting lasers , 1990, International Technical Digest on Electron Devices.

[13]  David J. Roulston,et al.  Bipolar Semiconductor Devices , 1990 .

[14]  T. Kurokawa,et al.  Novel photonic switch arrays consisting of vertically integrated multiple-quantum-well reflection modulators and phototransistors: excitation absorptive reflection switch , 1991, IEEE Photonics Technology Letters.