All-optical prefix tree adder with the help of terahertz optical asymmetric demultiplexer
TL;DR: An all-optical prefix tree adder with the help of a terahertz optical asymmetric demultiplexer (TOAD) using a set of optical switches is proposed and the theoretical model is presented and verified through numerical simulation.
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.
Citations
More filters
TL;DR: A single circuit consisting of 4 micro-ring resonators capable to perform 3 bit parity generator and checker operations is studied and reported, which makes proposed circuit design compact, simple and will be helpful in designing all optical integrated circuit in future.
58 citations
TL;DR: The proposed circuit can perform any of the four digital logic operations (NOT, NOR, XOR, AND) by using the appropriate optical pump signal at the selection port of the multiplexer.
48 citations
TL;DR: In this paper, the authors conducted a theoretical study of all-optical time-division multiplexing switching using GaAs-AlGaAs based microring resonator together with performances characteristics.
Abstract: Optical time-division multiplexing is a natural multiplexing technique leading to terabit/s transmission capacity for many services that will be found in near future optical telecommunication networks. In this paper we have conducted a theoretical study of all-optical time-division multiplexing switching using GaAs-AlGaAs based microring resonator together with performances characteristics. The proposed circuit is more compact, simple and will be helpful in designing all-optical telecommunication circuits in near future. Numerical simulation results confirming described methods are given in this paper.
15 citations
Cites background from "All-optical prefix tree adder with ..."
...Optical nonlinear materials (ONLM) provide a major support to optical switching based all-optical logic and algebraic processing [15–28]....
[...]
3 citations
01 Nov 2019
TL;DR: The performance parameters extinction ratio, contrast ratio, amplitude modulation, and insertion loss for the proposed device have been computed and obtained as 17.980dB, 16.450dB, 1.391dB, 0.022dB respectively.
Abstract: For High-speed processing and optical computing, look ahead carry adder is played a very important role. In this work look ahead carry adder based on electro-optic principle is proposed. Mach-Zehnder interferometer is used as an optical switching device. The performance parameters extinction ratio, contrast ratio, amplitude modulation, and insertion loss for the proposed device have been computed and obtained as 17.980dB, 16.450dB, 1.391dB, 0.022dB respectively.
Cites background or methods from "All-optical prefix tree adder with ..."
...To estimate the performance of the look-ahead carry adder device, extinction ration (ER), contrast ratio (CR), amplitude modulation (AM), and insertion loss (IL) are measured from the simulated output [2], [15]....
[...]
...Till now many optical computing devices like half adder subtractor, full adder subtractor [2], parallel adder, and look-ahead carry adder, etc....
[...]
References
More filters
TL;DR: In this paper, an All-Optical Boolean XOR logic gate with Terahertz Optical Asymmetric Demultiplexer (TOAD) based interferometric switch is designed and described.
14 citations
"All-optical prefix tree adder with ..." refers background in this paper
...No additional input light source is used in any stage; hence, no synchronization problem is observed in higher bit arithmetic([32])....
[...]