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Filter design using multi-bragg reflectors
(2012-12-27)
Ismail, Fairuz Diyana
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Aziz, Muhammad Safwan
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Teeka, Chat
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Ali, Jalil
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Yupapin, Preecha Phromphan
In this paper, we present the use of mathematical modeling of dielectric mirror known as known as Bragg reflector for optical design. A device system consists of the identical alternating layers using high and low refractive indices. Results obtained have shown that the model applications such as quarter-wavelength layers, unequal-length layers, short-pass and long-pass filters, and transmission filter design can be simulated and plotted.
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Atom bottom-up manipulation controlled by light for microbattery use
(2012-09-17)
Zainol, Farrah Dilla
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Jomtarak, Rangsan
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Daud, Suzairi
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Teeka, Chat
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Ali, Jalil
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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Optical spin generated by a soliton pulse in an adddrop filter for optoelectronic and spintronic use
(2012-07-01)
Glomglome, Sorayut
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Srithanachai, Itsara
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Teeka, Chat
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Mitatha, Somsak
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Niemcharoen, Surasak
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.
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Hybrid transistor manipulation controlled by light within a PANDA microring resonator
(2012-06-12)
Chantanetra, Soontorn
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Teeka, Chat
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Mitatha, Somsak
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Jomtarak, Rangsan
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Yupapin, Preecha P.
In this paper, the novel type of transistor known as a hybrid transistor is proposed, in which all types of transistors can be formed by using a microring resonator called a PANDA microring resonator. In principle, such a transistor can be used to form for various transistor types by using the atom/molecule trapping tools, which is named by an optical tweezer, where in application all type of transistors, especially, molecule and photon transistors can be performed by using the trapping tools, which will be described in details. © 2012 IEEE.
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Nanocommunication networks
(2012-03-01)
Yupapin, Preecha P.
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Mitatha, Somsak
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Ali, Jalil
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Teeka, Chat
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.
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Nanoscale nonlinear panda ring resonator
(2012-01-01)
Yupapin, Preecha P.
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Teeka, Chat
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Jalil, Muhammad Arif
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Ali, Jalil
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.
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Hybrid transistor manipulation controlled by light
(2011-11-01)
Suwanpayak, Nathaporn
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Teeka, Chat
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Yupapin, Preecha P.
In this article, the novel type of transistor known as a hybrid transistor is proposed, in which all types of transistors can be formed by using a microring resonator called a PANDA microring resonator.In principle, such a transistor can be used to form for various transistor types by using the atom/molecule trapping tools, which is named by an optical tweezer, where, in application, all type of transistors, especially, molecule and photon transistors can be performed by using the trapping tools, which will be described in details. © 2011 Wiley Periodicals, Inc.
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An optical buffer manipulation using a microring array
(2011-05-02)
Punthawanunt, Suphanchai
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Teeka, Chat
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Jomtarak, Rangsan
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Yupapin, Preecha P.
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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Simulation of an optical buffer using microring resonator array with 1.5μm radius
(2011-05-02)
Punthawanunt, Suphanchai
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Teeka, Chat
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Jomtarak, Rangson
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Yupapin, Preecha P.
We present the 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 is coupled via the lower MZI arm, where all coupling gap used is with 105 nm. Results obtained have shown that the delay times of the output signals can be used to form the optical buffer(memory), which can be available for high capacity channel multiplexing and filtering applications.
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Novel communication security scheme using dark-bright soliton conversion behaviors
(2011-02-01)
Pongwongtragull, Paiboon
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Teeka, Chat
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Kamoldilok, Surachart
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Yupapin, Preecha P.
We propose a novel scheme of communication security using dark-bright soliton conversion behaviors in which the transmission signals can be secured by using the random codes generated by dark-bright soliton conversion within the system. The system consists of two parts, where first, an optical Mach Zhender interferometer (MZI) is used to generate the coincidence dark and bright soliton pair by using the (2) phase retarder (i.e., a coupler), in which |D and |B states represent the orthogonal dark and bright soliton pulses. The signals from through (Th) port are formed and transmitted via the transmission line to the end user. Second, the adddrop filter is used to separate(filter) the required signal form the transmission link, in which the Th and drop port signals are formed as a reference and signal, respectively. In this case, we assume that both solitons are input into the MZI ports simultaneously (coincidently), in which the binary codes are randomly formed and used to present the transmission data, in which the states 0 and 1 are represented by |DB and |BD, respectively. Finally, the eavesdropper and signal accuracy are also described. © 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

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