Browsing by Author "Somsak Mitatha"

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    Nanocommunication networks
    (Nova Science Publishers, Inc., 2012) Preecha P. Yupapin; Somsak Mitatha; Jalil Ali; Chat Teeka
    Optical devices have become interesting tools that can be used in various applications. The use of such devices have been investigated in many areas such as E/O (electrical/optical) and O/E(optical/electrical) signal converters; optical signal processing; optical sensor; optical communication and medicine, etc. More interesting applications have been introduced such as the use of a micro/nano scale device, which has become both interesting and challenging. In this book, the behavior of light(light pulse) within the micro and nano scale device(ring resonator) is investigated. This can be integrated to form circuit and system devices that can be used for atom/molecule trapping and transportation; optical transistor; fast calculation device(optical gate); nanoscale communication and networks and a device for medical applications. © 2012 by Nova Science Publishers, Inc. All rights reserved.
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    Optical spin generated by a soliton pulse in an adddrop filter for optoelectronic and spintronic use
    (2012) Sorayut Glomglome; Itsara Srithanachai; Chat Teeka; Somsak Mitatha; Surasak Niemcharoen; Preecha P. Yupapin; P.P. Yupapin; Nanoscale Science and Engineering Research Alliance (NSERA), Faculty of Science, King Mongkuts Institute of Technology Ladkrabang, Bangkok 10520, Thailand; email: kypreech@kmitl.ac.th
    A new concept of an optical spin generation using bright and dark soliton conversion behaviors within a modified optical adddrop filter known as PANDA ring resonator is proposed. The orthogonal solitons can be formed within the system and detected simultaneously at the output ports. Under the resonant condition, the dark and bright soliton pair corresponding to the left-hand and right-hand rotating solitons (photons) can be generated. When a soliton is absorbed by an object, an angular momentum of either or - is imparted to the object, in which two possible spin states known as optoelectronic(soliton) spins are exhibited. Furthermore, an array of soliton spins, i.e. particles can be generated and detected by the proposed system, which can be used to form large scale spin generation. © 2011 Elsevier Ltd. All rights reserved.