Chinese Optics Letters, 2011, 9 (6): 062001, Published Online: May. 6, 2011
All-optical prefix tree adder with the help of terahertz optical asymmetric demultiplexer 
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前缀树加法器 太赫兹光学非对称解复用器 光学半加器 半导体光放大器 200.1130 Algebraic optical processing 200.3760 Logic-based optical processing 200.4560 Optical data processing 200.4660 Optical logic 060.4370 Nonlinear optics, fibers
Abstract
We propose and describe an all-optical prefix tree adder with the help of a terahertz optical asymmetric demultiplexer (TOAD) using a set of optical switches. The prefix tree adder is useful in compound adder implementation. It is preferred over the ripple carry adder and the carry lookahead adder. We also describe the principle and possibilities of the all-optical prefix tree adder. The theoretical model is presented and verified through numerical simulation. The new method promises higher processing speed and accuracy. The model can be extended for studying more complex all-optical circuits of enhanced functionality in which the prefix tree adder is the basic building block.
Dilip Kumar Gayen, Tanay Chattopadhyay, Rajat Kumar Pal, Jitendra Nath Roy. All-optical prefix tree adder with the help of terahertz optical asymmetric demultiplexer[J]. Chinese Optics Letters, 2011, 9(6): 062001.
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