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Computer simulations of fully cascadable picosecond all-optical logic using nonlinear semiconductor etalons

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3 Author(s)
Richardson, D. ; Opt. Sci. Center, Arizona Univ., Tucson, AZ, USA ; Gibbs, H.M. ; Koch, S.W.

A paired semiconductor etalon scheme for all-optical decision making is proposed, and the results of computer simulations of the device concept are presented. In the envisioned architecture, a two-wavelength logic-gate etalon is operated in series with an `upconverter' etalon to allow cascadable operation on a picosecond time-scale. The paired device achieves a fanout of at least two, as well as good overall contrast, requiring a total input energy of about 75 pJ to perform a single logic operation. The energy requirement might be reduced through the use of multiple-quantum-well materials. The computer simulations of the device behavior are based on a realistic model for the carrier-density-dependent optical nonlinearities of bulk GaAs

Published in:

Quantum Electronics, IEEE Journal of  (Volume:27 ,  Issue: 3 )