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Multi-wavelength erenkov radiations in a microring resonator in combination with two gratings

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Optoelectronics Letters 2015年第4期11卷 252-255页

作者： Rangsan Jomtarak preecha P.yupapin Faculty of Science and Technology Suan Dusit Rajabhat University Advanced Studies Center Department of PhysicsFaculty of ScienceKing Mongkut's Institute of Technology Ladkrabang (KMITL) Interdisciplinary Research Center Faculty of Science and TechnologyKasem Bundit University Spintronics Research Center Department of PhysicsFaculty of ScienceKasetsart University

In this paper,the erenkov radiation of light pulse in a microring and gratings is simulated and *** system design consists of a two-defect grating incorporating a microring,connected with a uniform *** simulation,the continuous wave(CW) light pulse with wavelength centered at 1.55 μm is input into the microring device via the two-defect *** 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 *** the obtained resonant output pulses,we find that the red-shifted and blue-shifted erenkov pulses are *** 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.

关键词： grating resonant resonator distinguished propagate shifted centered connected Heidelberg backward

Design of Mach-Zehnder Interferometer and Ring Resonator for Biochemical Sensing

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Photonic Sensors 2015年第1期5卷 12-18页

作者： Dedi IRAWAN Toto SAKTIOTO Jalil ALI preecha yupapin Advanced Photonics Science Institute (APSI) Faculty of Science Universiti Teknologi Malaysia Johor 81310 Malaysia Dept. of Industrial Engineering Faculty of Science and Technology UIN Suska Pekanbaru Indonesia Dept. of Physics Math and Science Faculty University of Riau Pekanbaru Indonesia Dept. of Physics King Mongkut's of Technology Ladkrabang and Quantum Life Institute Nonthaburi Thailand

We proposed a compact design of an optical biochemical sensor based on the Mach-Zehnder interferometer （MZI）, which was coupled by a ring resonator （RR） as a sensing tool. The sensor sensitivity has been determined by power difference at the output ports. The sensor enhancement has been optimized by numerically evaluating the geometrical parameters of the MZ! and RR. A great sensor sensitivity depicted by Fano resonance characteristic has been demonstrated as a function of the round trip phase in the range of 4×10^-4 - 4×10^-4, which was changed by the presence of the sample solution in the sensing area. This optimum sensitivity has been obtained for the values of two coupling coefficients of the MZI k1 =k2 =0.5/mm and the coupling coefficient between the MZI arm and RR KR = 0.5/ram. Furthermore, a good profile of sensitivity exchange has been exhibited by inducing the direct current voltage to the coupling region of k R. Finally, the output power transmission of the ring-coupled arm was depicted as a function of tunable k R.

关键词： Mach-Zehnder interferometer ring resonator biochemical sensor tunable sensitivity Fano resonance

Porous Silicon Based Bragg-Grating Resonator for Refractive Index Biosensor

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Photonic Sensors 2018年第3期8卷 248-254页

作者： Sourabh SAHU Jalil ALI preecha P. yupapin Ghanshyam SINGH Department of Electronics and Communication Engineering Malaviya National Institute of Technology Jaipur India Laser Centre IBNU SINA ISIR and Faculty of Science Universiti Teknologi Malaysia 81310 Johor Bahru Malaysia Computational Optics Group Advanced Institute of Material Science and Faculty of Electrical & Electronics Engineering Ton Duc Thang University Ho Chi Minh City Vietnam

In this work, we have evaluated the biosensing capability of the porous silicon （PSi） based sidewall Bragg-grating resonator. The approximation of the quasi-TE mode full vector for the eigenmode calculation is performed using a full vector mode solver. The transmission spectra of the device are evaluated using the transfer matrix method. We have observed a shift in the resonant band for a change in the refractive index of biomaterial in the upper cladding region. The theoretical value of the bulk sensitivity is calculated to be 387.48nm/RIU. The device is suitable for biosensing application due to its ability of interacting signal with the infiltrated analytes in the PSi waveguide core.

关键词： Biosensor evanescent field eigen mode

Rabi oscillation generation in the microring resonator system with double-series ring resonators

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Optoelectronics Letters 2015年第5期11卷 342-347页

作者： Ahmad Fakhrurrazi Ahmad Noorden Kashif Chaudhary Mahdi Bahadoran Muhammad Safwan Aziz Muhammad Arif Jalil Ong Chee Tiong Jalil Ali preecha yupapin Institute of Advance Photonics Science Nanotechnology Research AllianceUniversiti Teknologi Malaysia Department of Mathematics Universiti Teknologi Malaysia Advanced Studies Center Faculty of ScienceKing Mongkut's Institute of Technology Ladkrabang

In this paper, a microring resonator(MRR) system using double-series ring resonators is proposed to generate and investigate the Rabi oscillations. The system is made up of silicon-on-insulator and attached to bus waveguide which is used as propagation and oscillation medium. The scattering matrix method is employed to determine the output signal intensity which acts as the input source between two-level Rabi oscillation states, where the increase of Rabi oscillation frequency with time is obtained at the resonant state. The population probability of the excited state is higher and unstable at the optical resonant state due to the nonlinear spontaneous emission process. The enhanced spontaneous emission can be managed by the atom(photon) excitation, which can be useful for atomic related sensors and single-photon source applications.

关键词： resonator oscillation resonant waveguide unstable excited spontaneous insulator attached Hamiltonian

Molecular distributed sensors using dark soliton array trapping tools

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Journal of Biomedical Science and Engineering 2011年第6期4卷 472-478页

作者： Sorayut Glomglome Somsak Mitatha preecha P. yupapin 不详

We present the novel system of molecular distributed sensors using dark soliton pulse array, whereas the multi dark soliton sources can be generated and the molecular distributed sensors presented via an optical multiplexer (MUX). Initially, the dark soliton array with different center wavelengths can be generated, then the transmission molecules/atoms can be secured by using the dark soliton behaviors, whereas the dark soliton valley can be configured as the molecule/atom trapping potential well, which can be used to trap molecule/atom. In this case, the transported molecules/atoms in the router can be used to form the molecular distributed sensors, whereas the induced changes in the molecular distributed sensors can be formed and measured via the drop port of each output multiplexer.

关键词： Molecular Sensors Distributed Sensors Network Sensors Soliton Sensors

Molecular network using molecular circuit for drug delivery use

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Journal of Biomedical Science and Engineering 2012年第7期5卷 360-368页

作者： Narongchai Moongfangklang Somsak Mitatha Surasak Pipatsart preecha P. yupapin Hybrid Computing Research Laboratory Faculty of Engineering King Mongkut’s Institute of Technology Ladkrabang Bangkok Thailand Nanoscale Science and Engineering Research Alliance (N’SERA) Faculty of Science King Mongkut’s Institute of Technology Ladkrabang Bangkok Thailand School of Information Technology Payao University Payao Thailand

A novel design of molecular networks for drug delivery application using a PANDA ring resonator is proposed. By using the intense optical vortices generated within the PANDA ring resonator, the required molecules can be trapped and moved (transported) dynamically within the wavelength router and bus networks, in which the required drug delivery can perform within the wavelength router before reaching the required destination. PANDA ring is a modified optical add/drop filter. It is a name of Chinese bear, which is used to name the device by the authors. The advantage of the proposed system is that the drug delivery networks can perform within the tiny system (thin film device), where the large molecular drug networks such as ring, star and bus networks are also proposed, in which the applications such as Alzheimers’ and Parkinson diagnosis, blood circulation networks and in situ surgery operation are discussed.

关键词： Molecular Networks Blood Circulation Network Drug Networks Neural System and Network

High Capacity Mobile Ad Hoc Network Using THz Frequency Enhancement

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International Journal of Communications, Network and System Sciences 2010年第12期3卷 954-961页

作者： Sawatsakorn Chaiyasoonthorn Phongphun Limpaibool Somsak Mitatha preecha P. yupapin 不详

We propose a new design of the high channel capacity in Mobile Ad Hoc Network that uses the dense wave-length division multiplexing wavelength enhancement, in which the increasing in channel capacity and sig-nal security can be provided. The increasing in number of channel can be obtained by the increasing in wavelength density, while the security is introduced by the specific wavelength filter, which is operated by the Ad Hoc node operator and link with other nodes in coverage by dedicated one-to-one in direct or relay node. The optical communication wavelength enhancement is reviewed. The advantage is that the proposed system can be implemented and used incorporating with the existed communication link in both infrastruc-ture-based and Ad Hoc networks wireless network, where the privacy can be provided, which is discussed in details.

关键词： Ad Hoc Network THz Technology High Capacity Network Frequency Enhancement

Rabi antenna using microstrip add-drop multiplexer for electron warp speed investigation

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Chinese Optics Letters 2022年第7期20卷 80-87页

作者： Somchat Sonasang Prakasit Prabpal Piya Sirikan Pratimakorn Hakaew Nhat Truong Pham preecha yupapin Kanad Ray Sarawoot Boonkirdram Department of Electronic Technology Faculty of Industrial TechnologyNakhon Phanom UniversityNakhon Phanom 48000Thailand Department of Electrical Technology School of Industrial TechnologySakonnakhon Technical CollegeInstitute of Vocational Education Northeastern Region 2Sakonnakhorn 47000Thailand Division of Computational Mechatronics Institute for Computational ScienceTon Duc Thang UniversityHo Chi Minh City 72915Vietnam Faculty of Electrical and Electronics Engineering Ton Duc Thang UniversityHo Chi Minh City 72915Vietnam Amity School of Applied Sciences Amity University RajasthanJaipurIndia Faubert Lab Universitéde MontréalH3T 1P1 MontréalCanada Facultad de CienciasFisico-Matematicas Benemérita Universidad Autónoma de PueblaAv.San Claudio y Av.18 surCol.San Manuel Ciudad UniversitariaPuebla Pue 72570Mexico Program of Electrical and Electronics Faculty of Industrial TechnologySakon Nakhon Rajabhat UniversitySakon Nakhon 47000Thailand

This work presents experimental results of Rabi antenna characteristics using the coupled line microstrip *** was constructed by a modified coupled line microstrip four-port network,which is known as an add-drop *** driven AC input enters the device via an input port using the suitable frequency and coupled line microstrip ring *** multilevel system is generated by a wave-particle aspect before the two-level system is *** the resonance,the transitions of the states induce the energy called whispering gallery mode(WGM)at the circuit center,which is the squeezed *** generated electron oscillation within the WGM envelope oscillated by the frequency is known as the Rabi *** the successive filtering with continuous AC input via the selected port,the electron cloud warp speed can be generated and achieved inside the two-level *** constructed microstrip ring radius is 25 mm,and the experimental results of the Rabi antenna characteristics are in good agreement with the simulation *** obtained resonant antenna oscillation frequency is 2.103 *** electron cloud warp speed of 1.100c and time dilation of 0.006μs are obtained.

关键词： integrated photonics waveguide microwave photonics Rabi antenna

Growth of small diameter multi-walled carbon nanotubes by arc discharge process

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Chinese Physics B 2014年第3期23卷 412-417页

作者： K.T.Chaudhary J.Ali P.P.yupapin Institute of Advanced Photonics Science (APSI) Nanotechnology Research Alliance Universiti Teknologi Malaysia 81310Johor Bahru Malaysia Nanoscale Science and Research Alliance (N’SERA) Faculty of Science King Mongkut’s Institute of Technology Ladkrabang

Multi-walled carbon nanotubes （MWCNTs） are grown by arc discharge method in a controlled methane environment. The arc discharge is produced between two graphite electrodes at the ambient pressures of 100 tort, 300 torr, and 500 torr. Arc plasma parameters such as temperature and density are estimated to investigate the influences of the ambient pressure and the contributions of the ambient pressure to the growth and the structure of the nanotubes. The plasma temperature and density are observed to increase with the increase in the methane ambient pressure. The samples of MWCNT synthesized at different ambient pressures are analyzed using transmission electron microscopy, scanning electron microscopy, Raman spectroscopy, Fourier transform infrared spectroscopy, and X-ray diffraction. An increase in the growth of MWCNT and a decrease in the inner tube diameter are observed with the increase in the methane ambient pressure.

关键词： electric discharge arc plasma temperature and density carbon nanotubes