Browsing by Author "Preecha P. Yupapin"

Now showing 1 - 6 of 6
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    An optical buffer manipulation using a microring array
    (2011) Suphanchai Punthawanunt; Chat Teeka; Rangsan Jomtarak; Preecha P. Yupapin; S. Punthawanunt; Faculty of Science and Technology, Kasem Bundit University, Bangkok 10250, Thailand; email: suphanchai@kbu.ac.th
    We present design and FDTD simulations of microring resonator array optical buffer. The proposed buffer consists of six microring array coupled via upper MZI arm and one microring coupled via lower MZI arm all coupled with 105 nm gap coupling. Results obtained have shown that the delay signals can be available for the use for optical memory and applications.
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    Atom bottom-up manipulation controlled by light for microbattery use
    (2012) Farrah Dilla Zainol; Rangsan Jomtarak; Suzairi Daud; Chat Teeka; Jalil Ali; Preecha P. Yupapin; F.D. Zainol; Institute of Advanced Photonics Science, Nanotechnology Research Alliance, Universiti Teknologi Malaysia, Johor Bahru 81310, Malaysia; email: fairy-elie@yahoo.com
    In this paper, we propose a new design of the atom bottom-up technique that uses an optical trapping tool to form the atom trapping layer within a thin-film grating. By using a PANDA ring resonator, where atoms can be trapped, pumped, and controlled by light, the trapped atoms/molecules can be selected, filtered, and embedded within the required thin-film grating layers to manufacture nanobattery. In application, P-type or N-type atom can be prepared, trapped, and embedded within the desired thin-film layers, and finally, the microbattery can be manipulated. The theoretical background of light pulse in a PANDA ring resonator is also reviewed. © 2002-2012 IEEE.
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    Multi-wavelength _erenkov radiations in a microring resonator in combination with two gratings
    (Springer Verlag, 2015) Rangsan Jomtarak; Preecha P. Yupapin
    In this paper, the _erenkov radiation of light pulse in a microring and gratings is simulated and investigated. The system design consists of a two-defect grating incorporating a microring, connected with a uniform grating. In simulation, the continuous wave (CW) light pulse with wavelength centered at 1.55 _m is input into the microring device via the two-defect grating. The resonant outputs from the two-defect grating propagate through the microring and uniform grating, where the time delays of those two input pulses with different wavelengths through the system are distinguished by the output uniform grating. From the obtained resonant output pulses, we find that the red-shifted and blue-shifted _erenkov pulses are observed. In applications, such a proposed system can be used to form two different optical delay pulses, in which the change in _erenkov radiation of them, i.e., time delay within a microring device system, can be useful for _erenkov radiation imaging and sensing applications. � 2015, Tianjin University of Technology and Springer-Verlag Berlin Heidelberg.
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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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    Nanoscale nonlinear panda ring resonator
    (CRC Press, 2012) Preecha P. Yupapin; Chat Teeka; Muhammad Arif Jalil; Jalil Ali
    Microring/nanoring resonator is an interesting device that has been widely studied and investigated by researchers from a variety of specializations. This book begins with the basic background of linear and nonlinear ring resonators. A novel design of nano device known as a PANDA ring resonator is proposed. The use of the device in the form of a PANDA in applications such as nanoelectronics, measurement, communication, sensors, optical and quantum computing, drug delivery, hybrid transistor and a new concept of electron-hole pair is discussed in detail. © 2012 by Taylor & Francis Group, LLC.
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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.