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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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    Novel optical cryptography using LIP signals generated by a PANDA ring resonator
    (2011-11-01)
    Pongsanam, P.
    ;
    Juleang, P.
    ;
    Mitatha, S.
    ;
    Yupapin, P. P.
    We propose a novel optical cryptography using the dark-bright soliton conversion control in a modified add/drop (AD) optical filter. By using the control arrangement, the obtained outputs of the dynamic states of dark-bright soliton can be used to form the key suppression which can be available for communication security application, where finally, the key recovery can be obtained by controlling the AD filter outputs. The optical cryptography part consists of an AD filter which is used to generate the encrypted and decryption keys from the optical keys (LIP signals), and a Mach-Zehnder interferometer is also used for multiplexing and de-multiplexing operations. The simulation results obtained have shown that the proposed system can be achieved, which can be used to form high security communication. © 2011 Wiley Periodicals, Inc.
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    Convergecast of multi-destinations in Zigbee tree-based wireless sensor network
    (2010-01-01)
    Juleang, P.
    ;
    Mitatha, S.
    ;
    Yupapin, P. P.
    Multi-destinations in wireless sensor network have extremely benefited for monitoring system. Then, convergecast is a fundamental operation in wireless sensor network. Existing convergecast solution focused on latency and energy consumption. However, a good design should be complaint to standard. This paper proposes convergecast solution of multi-destinations in Zigbee tree-based wireless sensor network and proves that this solution is simulation. Our solution is optimal convergecast of multi-destination in wireless sensor network and using accompany with network's resource for all destinations. Then, our solution is compliant with the low-power design of IEEE 802.15.4. Simulation results show that the proposed solution can indeed achieve convegecast of multi-destinations.