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Investigation the Effect of Soft X-ray Flash Exposure on PN Diode
(2020-01-07)
Chaiyasoonthorn, S.
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Srithanachai, I.
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Niemcharoen, S.
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Sangwaranatee, N.
In this paper will present the properties of PN diode before and after expose by radiation. Although, radiation help to improve the performance of semiconductor device but still has some damage in device structure. In previous article I have showed performance improve after expose by soft radiation. The device is exposed by low frequency X-ray radiation (soft radiation flash exposure: SRFE) technique with few second for several times. In principle of PN diode after fabrication will has defects from process such as ion implantation, doped and silicon wafer process. The results show temperature while SRFE expose on device that generate high temperature on surface and silicon boundary that may the optimize energy and expose time for treatment damage of PN diode.
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Surface Thermal and Electric charge of PN Diode Expose by Soft Radiation Flash Exposure
(2020-01-07)
Sangwaranatee, N.
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Srithanachai, I.
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Niemcharoen, S.
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Chaiyasoonthorn, S.
In this study present the effect of soft radiation flash exposure (SRFE) to forward bias current-voltage (I-V) of PN diode by using COMSOL simulation program. The results show surface thermal and electric change while expose by radiation with flash exposure technique. Series resistance (R<inf>s</inf>) increase around 2 times and close to idea case after expose by radiation, the radiation will impact to bulk defect and reduce surface recombination. SRFE induce temperature on surface and deep into silicon bulk. The value of R<inf>s</inf> increase with increase expose time. The changing of R<inf>s</inf> becomes independent from radiation dose at high forward bias voltage.
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Highly THz frequency carrier generated by light for multipurpose RFID applications
(2013-03-01)
Pornsuwancharoen, N.
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Tasakorn, M.
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Yupapin, P. P.
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Chaiyasoonthorn, S.
We propose a new system of the THz carrier generation that can be used to support the new optical communication bandwidth, which can be useful for the large demand radio frequency identification (RFID). The design system consists of a nonlinear microring resonator system incorporating an add/drop filter and the common laser, where in this case the input source is a Gaussian pulse with center wavelengths at 1300 nm. The ring radii and coupling coefficients (κs) are 5-12 μm 0.10-0.97, respectively. The generated carriers for a new THz RFID are ranged between 0.2 THz and 0.4 THz. The multichannels RFID are obtained. There are more than 300 channels generated and noted using only a single center wavelength, i.e., 1300 nm. © 2012 Published by Elsevier GmbH.
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A new technique generation ghost-signal by microring resonator for 1.3 μm security communication
(2012-01-01)
Dunmeekeaw, U.
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Sririsin, S.
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Pornsuwancharoen, N.
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Chaiyasoonthorn, S.
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Yupapin, P. P.
We present a new system of signal security using nonlinear micro ring resonators for optical communication system. When a Gaussian pulse (1.3μm) is input into the system, the chaotic signal is generated and multiplexed into the optical communication. The chaotic waveform can be canceled using an add/drop device connected into the transmission link. In application results from the fact that the fast and slow light behaviors can be presented and can be seen using the add/drop filter. We can generate signal to obtain the two identical "signal'' and "ghost'' signals, which are observed in a different time frame. In this application, communication security can be performed when the required information is multiplexed and performs the link using the chaotic signal, signal and ghost signals, where the original signal can be retrieved and randomized by the known user. © 2010 Published by Elsevier Ltd.
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Privacy amplification of QKD protocol in a quantum router
(2012-01-01)
Chaiyasoonthorn, S.
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Youplao, P.
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Mitatha, S.
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Yupapin, P. P.
We propose a new system of quantum cryptography for QKD protocol with privacy amplification for internet security using Gaussian pulse propagating within a nonlinear ring resonator system, quantum processor and a wavelength router. To increase the channel capacity and security, the multiplexer is operated incorporating a quantum processing unit via an optical multiplexer. The transmission part can be used to generate the high capacity quantum codes within the series of micro ring resonators and an add/drop filter. The receiver part can be communicated by using the quantum key (quantum bit, qubit) via a wavelength router and quantum processors. The reference states can be recognized by using the cloning unit, which is operated by the add/drop filter, where the communication between Alice and Bob can be performed. Results obtained have shown that the correlated photons can be generated and formed the entangled photon pair, which is allowed to form the secret key between Alice and Bob. In application, the embedded system within the computer processing unit is available for quantum computer. © 2010 Published by Elsevier Ltd.
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Nano-scale sensing transducer using entangled photon walk-off compensation
(2011-08-01)
Tamee, K.
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Chaiyasoonthorn, S.
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Mitatha, S.
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Yupapin, P. P.
We propose a new concept of a nano-sensing transducer system using a nano-waveguide. The small change in physical quantity affects to the change in device parameters such as refractive index or length which is relatively absorbed and observed by the resonant signals. In principle, the stored light pulse at the specified wavelength is generated by using a soliton propagating within the ring resonators, whereas a resonant signals can be stored within the nano-waveguide, i.e. a sensing transducer, which is formed by the sensing ring device. The induced change in the resonant signals by the surrounded environment is occurred, and can be detected by using the optical/quantum processor. Such a proposed device is namely suitable to perform the measurements in the nano-scale regime such as force, stress and temperature. © 2010 Elsevier GmbH. All rights reserved.
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Dark-bright optical solitons conversion via an optical add/drop filter for signals and networks security applications
(2010-10-01)
Knobnob, B.
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Mitatha, S.
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Dejhan, K.
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Chaiyasoonthorn, S.
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Yupapin, P. P.
We propose a new system of the darkbright solitons conversion using a micro- and nano-ring resonators incorporating an optical add/drop filter, where the add/drop filter can be used to convert the dark soliton to bright soliton. The key advantage of the system is that the detection of the dark soliton pulse is normally difficult due to low level of input power. Firstly, a dark soliton pulse is input into a micro-ring resonator, then propagating into smaller micro- and nano-ring resonators. Secondly, the add/drop filter is applied (connected) into the ring system, where the bright and the dark solitons are obtained via the drop and through (or throughput) the ports of the add/drop filter, respectively. The results obtained have shown that the detected soliton power can be controlled by the input soliton power and the ring resonator coupling coefficient, which is enough to use in the transmission link. The optical and the quantum networks using dark soliton are also discussed. © 2009 Elsevier GmbH. All rights reserved.
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An extremely narrow UV pulse generation using a micro- and nano-ring system for pico-lithographic resolution
(2010-09-01)
Chaiyasoonthorn, S.
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Pornsuwancharoen, N.
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Yupapin, P. P.
We propose a new technique of an extremely narrow ultraviolet (UV) pulse width generation for pico-lithography technology using a nonlinear ring resonator system. A system consists of three micro- and a nano-optical ring resonators, which can be used to generate the 50 pm (10<sup>-12</sup> m) optical spectral width at the ultraviolet wavelength. By using a soliton pulse with a pulse width of 50 ns, 1 W peak power, center wavelength at 1550 nm, after the soliton pulse is launched into a first ring device, the chaotic pulses are generated within the first ring. The chaotic filtering behaviors are performed by using the second and third ring devices, whereas the extremely short pulse, i.e. narrow spectral width, can be generated by using the extended nano-ring device. The broad spectrum of the harmonic waves is generated and filtered, especially the generation of third harmonic wave, which is known as the ultraviolet wavelength, is achieved, which is capable of forming pico-lithographic resolution. Results obtained have shown that the generation of the spectral width of 50 pm at a wavelength of 511.125 nm, with peak power at 35 mW is achieved. © 2009 Elsevier GmbH. All rights reserved.
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A new generation optical lithography using a third harmonic pulse generated by micro-ring resonators
(2010-03-01)
Yupapin, P. P.
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Chaiyasoonthorn, S.
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Saneujit, O.
We first propose a new system of a third harmonic generation by using a soliton pulse circulating in the integrated micro-ring devices. By using this system, the ultra-short pulse in the attosecond (as) and beyond can be easily generated. In principle, light pulse known as a soliton pulse is input into a design system. It consist the three-stage micro-ring resonators, where the ring radii are within the range between 5 and 35 μm. With the appropriate parameters such as ring radius, coupling ratio and nonlinear refractive index, the attosecond pulse is generated by filtering the chaotic signals within the micro-ring devices. One of the results obtained has shown that the generation of the ultra narrow pulse (spectral width) and sharp tip is achieved. The potential of using such a pulse for picometer (pm)-scale lithography is plausible. © 2008 Elsevier GmbH. All rights reserved.
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Generalized fast light generation with multi-stage nonlinear micro ring resonators
(2010-02-01)
Chaiyasoonthorn, S.
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Yupapin, P. P.
We firstly demonstrate a simple system of fast light generation using a soliton pulse circulating in the integrated micro ring devices. Using such a system, the attosecond pulse and beyond can be easily generated. Simulation results obtained have shown that the generation of a very narrow full-width at half maximum (FWHM) and sharp tip are achieved. In principle, light pulse known as a soliton pulse is generated and input into a three-stage micro ring resonator, where the ring radii are within the ranges from 5 to 15 μm. With some selected parameters such as ring radii, coupling coefficients and nonlinear refractive indices, the extremely short pulse is generated, which means fast light is generated from ns to zs and beyond by using the simple system. © 2008 Elsevier GmbH. All rights reserved.

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