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Optical Engineering

Novel communication security scheme using dark-bright soliton conversion behaviors
Author(s): Paiboon Pongwongtragull; Chat Teeka; Surachat Kamoldilok; Preecha P. Yuapin
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Paper Abstract

We propose a novel scheme of communication security using dark-bright soliton conversion behaviors in which the transmission signals can be secured by using the random codes generated by dark-bright soliton conversion within the system. The system consists of two parts, where first, an optical Mach Zhender interferometer (MZI) is used to generate the coincidence dark and bright soliton pair by using the (π/2) phase retarder (i.e., a coupler), in which |D〉 and |B〉 states represent the orthogonal dark and bright soliton pulses. The signals from through (Th) port are formed and transmitted via the transmission line to the end user. Second, the add/drop filter is used to separate(filter) the required signal form the transmission link, in which the Th and drop port signals are formed as a reference and signal, respectively. In this case, we assume that both solitons are input into the MZI ports simultaneously (coincidently), in which the binary codes are randomly formed and used to present the transmission data, in which the states "0" and "1" are represented by |DB〉 and |BD〉, respectively. Finally, the eavesdropper and signal accuracy are also described.

Paper Details

Date Published: 1 February 2011
PDF: 4 pages
Opt. Eng. 50(2) 025004 doi: 10.1117/1.3537967
Published in: Optical Engineering Volume 50, Issue 2
Show Author Affiliations
Paiboon Pongwongtragull, King Mongkut's Institute of Technology Ladkrabang (Thailand)
Chat Teeka, King Mongkut's Institute of Technology Ladkrabang (Thailand)
Surachat Kamoldilok, King Mongkut's Institute of Technology Ladkrabang (Thailand)
Preecha P. Yuapin, King Mongkut's Institute of Technology Ladkrabang (Thailand)


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