检索结果-南通市图书馆

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

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

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

Human-like stereo sensors using plasmonic antenna embedded MZI with space–time modulation control[Invited]

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2021年第10期19卷 29-37页

作者： A.Garhwal A.E.Arumona p.Youplao K.Ray I.S.Amiri p.yupapin Amity School of Engineering&Technology Amity University RajasthanJaipurIndia Computational Optics Research Group Advanced Institute of Materials ScienceTon Due Thang UniversityHo Chi Minh CityVietnam Faculty of Applied Sciences Ton Due Thang UniversityHo Chi Minh CityVietnam Division of Computational physics Institute for Computational ScienceTon Due Thang UniversityHo Chi Minh CityVietnam Amity School of Applied Sciences Amity University RajasthanJaipurIndia

A micro stereo sensor system is proposed for human sensors,where eyes,ears,tongue,nose,body,and brain are applied by six panda rings embedded in a Mach–Zehnder interferometer(MZI).The input power is applied to the upper branch of MZI and propagates within the *** six antennas(sensors)are formed by the whispering gallery modes of the panda *** space–time modulation signal is applied to the MZI lower *** modulated stereo signals can be configured as the plasmon(electron)spin orientations,which can be identified and applied for quantum codes and quantum consciousness.

关键词： micro-optical devices electro-optical devices integrated optics devices

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

在线全文

学校读者我要写书评

暂无评论

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

Stopping and storing light pulses within a fiber optic ring resonator

在线全文

学校读者我要写书评

暂无评论

Chinese Optics Letters 2009年第9期7卷 778-780页

作者： F.H.Suhailin J.Ali p.p.yupapin Y.Fujii H.Ahmad S.W.Harun Institute of Advanced photonics Sciences Science FacultyUniversiti Teknologi Malaysia Advanced Research Center for photonics Faculty of ScienceKing Mongkut's Institute of Technology Ladkrabang Department of Electronic Engineering Gunma University photonics Research Centre University of Malaya

A simple all optical system for stopping and storing light pulses is demonstrated. The system consists of an erbium-doped fiber amplifier （EDFA）, a semiconductor optical amplifier （SOA）, and a fiber ring resonator. The results show that the multisoliton generation with a free spectrum range of 2.4 nm and a pulse spectral width of 0.96 nm is achieved. The memory time of 15 min and the maximum soliton output power of 5.94 dBm are noted, respectively. This means that light pulses can be trapped, i.e., stopped optically within the fiber ring resonator.

关键词： ring In Stopping and storing light pulses within a fiber optic ring resonator EDFA

Laser-Induced Graphite plasma Kinetic Spectroscopy under Different Ambient pressures

在线全文

学校读者我要写书评

暂无评论

Chinese physics Letters 2015年第4期32卷 33-37页

作者： K. Chaudhary S. Rosalan M. S. Aziz M. Bohadoran J Ali p. p. yupapin N. Bidin Saktioto Laser Centre Ibnu Sina ISIR Universiti Teknologi Malaysia Johor Bahru 81310 Malaysia Nanoscale Science and Research Alliance (N'SERA) Faculty of Science King Mongkut's Institute of Technology Ladkrabang Bangkok 10520 Thailand physics Department Universitiy of Riou Pekanbaru Indonasia

The laser induced plasma dynamics of graphite material are investigated by optical emission spectroscopy. Abla- tion and excitation of the graphite material is performed by using an 1064nm Nd：YAG laser in different ambient pressures. Characteristics of graphite spectra as line intensity variations and signal-to-noise ratio are presented with a main focus on the influence of the ambient pressure on the interaction of laser-induced graphite plasma with an ambient environment. Atomic emission lines are utilized to investigate the dynamical behavior of plasma, such as the excitation temperature and electron density, to describe emission differences under different ambient conditions. The excitation temperature and plasma electron density are the primary factors which contribute to the differences among the atomic carbon emission at different ambient pressures. Reactions between the plasma species and ambient gas, and the total molecular number are the main factors influencing molecular carbon emis- sion. The influence of laser energy on the plasma interaction with environment is also investigated to demonstrate the dynamical behavior of carbon species so that it can be utilized to optimize plasma fluctuations.

关键词： Laser-Induced Graphite plasma Kinetic Spectroscopy under Different Ambient pressures Cl

porous Silicon Based Bragg-Grating Resonator for Refractive Index Biosensor

在线全文

学校读者我要写书评

暂无评论

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

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

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

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

Molecular distributed sensors using dark soliton array trapping tools

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

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

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

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