Abstract
All-optical programmable logic arrays (PLAs) based on canonical logic
units (CLUs), i.e., minterms and maxterms, are presented. We experimentally
demonstrated the full set of two-input and three-input minterms as well as
maxterms using the cross-gain modulation in semiconductor optical amplifiers
(SOAs). Maxterms can be easily obtained based on minterms. The reconfigurability
and scalability of the system are largely enhanced compared to our previous
work. Correct and clear temporal waveforms are achieved for all the canonical
logic units. The measured extinction ratios of two-input and three-input CLUs
are ~15 dB
and ~11 dB,
respectively. Based on the CLUs, both sum-of-products and product-of-sums
typed PLAs are exhibited. Six important logic functions, including full-adder,
full-subtractor, multiplier, multiplexer, demultiplexer and decoder, are presented
as examples to show that the canonical logic units-based programmable logic
array (CLUs-PLA) can be reconfigured to perform different logic functions.
The features of simple architectures, integration ability of SOA and programmable
filter enable the great integration potential for CLUs-PLA.
© 2012 IEEE
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