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Highly secured optical communication by optical key and identification address
(2013-05-01)
Juleang, P.
;
Putthacharoen, R.
;
Mitatha, S.
;
Yupapin, P. P.
We propose a novel design of optical network system that can be used for optical communication security and receiver identification. The data signal is secured by using both the optical encryption key and optical address of the receiver before transmission, where finally the receiver who has the valid optical decryption key and optical address can decrypt the Ciphertext. In this paper, a PANDA ring resonator, optical add/drop filter and Mach-Zehnder Interferometer are used for the encryption, decryption and identification processes without any electronic control circuit. The encryption and decryption keys are formed by dark-bright soliton propagation within the PANDA ring resonator. Simulation results obtained have shown that the secured optical network can be achieved optically and realized.
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Data security transmission via a noisy channel
(2011-05-02)
Mitsophonsiri, K.
;
Punthawanunt, S.
;
Mitatha, S.
;
Yupapin, P. P.
We propose a novel method that can be used to perform the data verification and encryption by using the microring resonators incorporating an add/drop filter, where the confidentiality and integrity of information in optical communication can be formed. In this paper, the encryption is formed by the chaotic noise sophisticates irreversible and unpredictable in the nonlinear microring resonator. The proposed system is used to generate the message authentication code for maintaining data integrity, where the noisy signals are created by the microring resonator and combined with the encoded information to protect the man-in-the-middle attacks (decipher). By using the extremely small processing device, the proposed design can be easily applied to secure any form of communication in wireless network, mobile communication network and military applications with low power consumption and very high-speed procedures.
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A novel temporal dark-bright solitons conversion system via an add/drop filter for signal security use
(2010-11-01)
Siririth, W.
;
Mitatha, S.
;
Pingern, O.
;
Yupapin, P. P.
We propose a new design of a security scheme by using the nonlinear behaviors of temporal dark and bright solitons within a micro-ring resonator system for signal security application. When a dark soliton pulse is input into the proposed system, the chaotic signal is generated, where the required bright soliton pulse can be retrieved and detected by the add/drop filtering device. The chaotic wave form can be cancelled by using an add/drop device, which can be connected and used in the communication link. By using the appropriate ring parameters, simulation results obtained have shown that the soliton conversion can be performed. The ring radii used are within the ranges from 5 to 10 μms and A<inf>eff</inf>=0.100.50 μm<sup>2</sup>. In application, the chaotic signal is generated and formed by the dark soliton within a nonlinear micro-ring device. This can be seen by using the add/drop device, where the bright soliton is formed and detected, which is available to use in communication link. The different temporal soliton response time is seen, the response times of 169 and 84 ns are noted for temporal dark and bright solitons, respectively, which can also be used to form the security key. © 2009 Elsevier GmbH. All rights reserved.

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