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A study of double microring resonator behavior for 1.3 μm optical communication
(2014-01-01)
Pornsuwancharoen, N.
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Tasakorn, M.
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Phromloungsri, R.
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Yupapin, P. P.
A system that can be used to generate the new optical communication using a Gaussian pulse propagating within a nonlinear microring resonator double add/drop multiplexing system is discussed. By using the wide range of the Gaussian input pulses, for instance, when the input pulses of the common lasers with center wavelengths 1,300 nm are used. Achievements obtained have shown that very high capacity more than 300 channels for optical communication. © (2014) Trans Tech Publications, Switzerland.
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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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A new THz frequency band generation for optical radio system of RFID applications
(2012-01-01)
Sansoda, B.
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Thongmee, S.
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Pornsuwancharoen, N.
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Yupapin, P. P.
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Phromloungsri, R.
We propose a novel system that can be used to generate the new optical communication that have shown the optimize results with various RFID applications. Gaussian pulse with center wavelengths from 1,300 nm are used, which this system is very simple for used. Whereas the suitable simulation parameters are input power, pulse width, ring radii are 5-12μm and the material refractive indices (κ) are 0.10-0.97. The potential applications carrier generation for a new THz RFID is 0.2 THz by micro-nano ring resonator device. © 2010 Published by Elsevier Ltd.
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A novel optical radio on fiber multi-channel by micro ring resonator system
(2012-01-01)
Pornsuwancharoen, N.
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Boonmeewised, K.
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Kitcharoen, N.
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Sansoda, B.
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Yupapin, P. P.
We propose a novel system that can be used to generate the new optical radio on fiber communication continuous variable channel using a Gaussian pulse propagating within a nonlinear micro-nanoring resonator system. By using the wide range of the Gaussian input for instance, when the input pulses of the common lasers with centre wavelengths from 1,300 nm are used, which this system is simple for used. Results obtained have shown that more available wavelength bands and frequency domain(THz) from the different ring parameter and wavelengths can be generated, which can be used to form new optical to high frequency ranges, whereas the use of the very high channel capacity for personal wavelength and very high security and multi-channel in network applications is plausible. © 2010 Published by Elsevier Ltd.
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Design and application of microstrip parallel-coupled lines employing step-impedance transmission-line compensation
(2009-04-01)
Kumpang, S.
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Phromloungsri, R.
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Chongcheawchamnan, M.
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Krairiksh, M.
;
Robertson, I. D.
The application of step-impedance transmission lines (SITLs) to improving the directivity of parallel-coupled microstrip lines is presented. A simple design procedure for two configurations based on the SITL technique is given. The application of the technique is demonstrated practically with a design at 0.9GHz on an RF60 substrate. The directivities obtained from the measured results are improved by more than 6 and 30dB compared with the designed uncompensated coupler. The compensation technique is then applied to the design of a coupled-line resonator and bandpass filter for suppressing harmonic responses in these circuits. Experimental results show that the second harmonic in the filter response is suppressed by 30dB. © 2009 The Institution of Engineering and Technology.
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Microstrip ring resonator filter with inductively-compensated parallel-coupled feed and stepped-impedance design
(2007-11-19)
Chongcheawchamnan, M.
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Phromloungsri, R.
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Krairiksh, M.
;
Robertson, I. D.
A dual-mode ring resonator filter design technique is reported that uses a parallel-coupled feed structure and incorporates a stepped-impedance lowpass filter in the ring. The structure yields a compact bandpass filter element having two poles and two zeroes with improved harmonic suppression. The proposed topology is demonstrated with a design operating at 2.45GHz with 5 bandwidth. More than 18dB of spurious suppression from 2.8 to 8GHz is demonstrated in the experimental results. © The Institution of Engineering and Technology 2007.

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