Photonic crystal based all-optical half adder: a brief analysis
Author
dc.contributor.author
Sivaranjani, R.
Author
dc.contributor.author
Shanmuga Sundar, D.
Author
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Sridarshini, T.
Author
dc.contributor.author
Sitharthan, R.
Author
dc.contributor.author
Karthikeyan, M.
Author
dc.contributor.author
Sivanantha Raja, A.
Author
dc.contributor.author
Flores Carrasco, Marcos
Admission date
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2021-03-25T15:43:08Z
Available date
dc.date.available
2021-03-25T15:43:08Z
Publication date
dc.date.issued
2020
Cita de ítem
dc.identifier.citation
Laser Phys. 30 (2020) 116205 (8pp)
es_ES
Identifier
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10.1088/1555-6611/abbe8b
Identifier
dc.identifier.uri
https://repositorio.uchile.cl/handle/2250/178794
Abstract
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A photonic crystal (PhC) based optical component paves a path to the upcoming all-optical computer processors. All the components can be realized with the help of PhCs. In particular, optical gates have played a major part in the development of all-optical half adders which has lead to the bloom of optical computing technology. In this paper, a PhC based optical half adder is proposed and a brief analysis is carried out for the different crystal structures and lattice patterns. The efficiency of the device is analyzed by providing proper distinct space in output power between logical '0' and '1' states and it operates well even in the reduced input power level. The error can be minimized while identifying the logical states (logic '0' and logic '1'), by setting a threshold limit for output power. The threshold level is fixed such that if it is greater than 0.7 mu W, it is considered as logic '1', and if it is less than 0.35 mu W, then it will be taken as logic '0'. The device with circular crystals in a hexagonal lattice provides a better contrast ratio of 12.55 dB and 9.29 dB for 'sum' and 'carry' respectively. The miniature size of the proposed device depicts that this device is compatible with photonic integrated circuit (PIC) applications.