Page 499 - Introduction to Information Optics

484 9. Computing with Optics

Fig. 9.7, Mapping terms to state (s) and output (z) functions for a dual-rail serial adder using
crossover interconnects and OR-NOR logic.

to the ground state of Eu. The ET device possesses the inherent capability of
performing OR and NOT functions. The OR operations on two-dimensional
arrays are done in parallel by sequentially writing the binary arrays to be
operated onto the device with enough energy to cause the device to saturate.
When the device is read with infrared light, the output luminescence shows the

SLM 2 SLM 3
Beam Splitter SLMi I I SLM4
ETFilm

Detector
Array

IR

Fig. 9.8. Optical configuration for parallel logic operations using an electron-trapping device [23],