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Author: search.filters.author.Putthacharoen, R.

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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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    THz frequency bands generation for Radio-over-Fiber systems
    (2012-06-01)
    Mitatha, S.
    ;
    Putthacharoen, R.
    ;
    Yupapin, P. P.
    We propose a new design THz frequency for Radio-over-Fiber (RoF) systems that use the dense wavelength division multiplexing wavelength enhancement, whereas the increasing in channel capacity and signal security can be provided. The increasing in number of channel can be obtained by the increasing in wavelength density, while the security is introduced by the specific wavelength filter, which is operated by the central operator. The optical communication wavelength enhancement is reviewed. The advantage is that the proposed system can be implemented and used incorporating with the existed communication link in both wire and terabit wireless communication system. © 2011 Elsevier GmbH. All rights reserved.