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Modeling Carbon Emission by Composite Model of Neural Network and Auto-Regression Integrated Moving Average
2024 17th International Conference on Advanced Computer Theory and Engineering (ICACTE)
Year: 2024 | Conference Paper |
In recent decade, increasing CO2 emission further aggravated greenhouse effect. Most of the models regarding the analysis and prediction of carbon dioxide (CO2) emission were based on the emission intensity, population, economy and technology (IPAT) models and modified IPAT models. By applying multiple linear regression analysis of the three or four parameters to forecast the trend of the emission...Show More
Theoretical and Experimental Studies of THz Wireless Communication Signal Transmitting Through Window Glass
2024 IEEE 7th International Conference on Computer and Communication Engineering Technology (CCET)
Year: 2024 | Conference Paper |
6G wireless communication is expected to offer data rates that are 100 to 1000 times faster than 5G, enabling seamless transfer of massive amounts of data with ultra-low latency. This will significantly enhance the user experience in various applications, such as virtual reality, augmented reality, and realtime gaming. 6G networks will utilize higher frequency bands like the Terahertz (THz) range,...Show More
Classification Identification of Coronary Heart Disease using Transfer Learning
2024 IEEE 7th International Conference on Computer and Communication Engineering Technology (CCET)
Year: 2024 | Conference Paper |
In this paper, we embark on a detailed exploration of six seminal deep learning models that are widely recognized for their effectiveness in classification tasks. We elucidate not only their foundational principles but also delve into their intricate network structures. Our approach incorporates advanced transfer learning methodologies, featuring the strategic freezing of weights in base models an...Show More
Enhancing Signal Amplification for Optical Communication using Nanowires Cladding Erbium-Doped Waveguide
2024 7th International Conference on Information Communication and Signal Processing (ICICSP)
Year: 2024 | Conference Paper |
The research on enhancing the signal amplification of erbium-doped waveguide by silver nanowires aims to address the large size of current fiber amplifiers, which is a consequence of using long fibers as gain media. This hinders their integration with transmitters and receivers. By integrating silver nanowires with optical signal amplifying materials, this study explores the possibility of reducin...Show More
Modifying Spontaneous Emission Spectra by Using Split Rings
2023 2nd International Conference on Optical Imaging and Measurement (ICOIM)
Year: 2023 | Conference Paper |
We propose a scheme to modify spontaneous emission spectra with split rings. We consider the heterogeneous environment around the dipole and the dipole as a whole to comprehensively explore the impact of the parameters of the system on the partial local density of state. And we achieve the customization of spontaneous emission spectra by engineering the partial local density of state with the co-d...Show More
Four-wave Mixing Interaction in a Topological Resonator
2022 Conference on Lasers and Electro-Optics (CLEO)
Year: 2022 | Conference Paper |
We propose a method to use deep learning to achieve transmittance prediction and inverse design of microring resonator channel dropping filters. We transform the transmittance prediction and inverse design into model training problems, which learn and approximate the intrinsic interactions from the geometric parameter space to transmittance space and the transmittance space to geometric parameter ...Show More
We analyze the real and imaginary parts of cBN in a broad wavelength range both 0.5-1.0 μm and 1.36-10 μm respectively, and use both Fresnel theory and Meep software package to calculate the transmittance and reflectance. The theoretical and numerical results show that the transmision and reflection on the interfaces mentioned above have an abnormal phenomenon, and the physical mechanism is analyz...Show More
Polarization-Controlled Dynamically Tunable Electromagnetically Induced Transparency-Like Effect Based on Graphene Metasurfaces
In this paper, we theoretically and numerically demonstrate a polarization-controlled dynamically tunable electromagnetically induced transparency-like (EIT-like) effect based on graphene metasurfaces. The unit cell of metasurface is composed of a rectangular graphene ring placed between two parallel graphene strips, which can achieve tunable spectral responses in different polarization directions...Show More
In this work, we theoretically propose an anisotropic metasurface absorber, unit cell of which consists of a continuous monolayer black phosphorus (BP) sheet, sandwiched between a circular silver ring and a dielectric layer stacking on a silver substrate. Numerical results reveal that perfect enhancement absorption can be achieved in both armchair and zigzag directions, in which the resonant absor...Show More
Fluoride-based thulium-doped visible light fiber amplifier (TmVLFA), which can be used to amplify the blue light signal for a visible light communication (VLC) system, is theoretically demonstrated for the first time according to the best of our knowledge. The transition rate equations and power propagation equations are solved to predict the dependence of the gain and noise figure on fiber parame...Show More
Enhanced Transverse Optical Force Between Paired Graphene Nanoribbons
We present a study of transverse optical forces arising in a free-standing graphene nanoribbon pair. The force is evaluated using a numerical procedure based on finite difference time domain simulations. We find that optical forces on the order of nN · μm-1 ·mW-1 can be obtained in both vertically and horizontally aligned ribbon pair. The influence of graphene loss on the total optical force obtai...Show More
Broadband Solar Wavelength Transformation of Visible Light to Near-Infrared Radiation in {\rm Ce}^{3+}\hbox{-}{\rm Nd}^{3+}\hbox{-}{\rm Yb}^{3+} Triple-Doped Yttrium Aluminum Garnet
We provide a framework for investigating and optimizing broadband solar wavelength transformation of visible light to near-infrared radiation in Ce3+-Nd3+-Yb3+ tripled-doped yttrium aluminum garnet. We study the Ce3+-Nd3+-Yb3+ quantum cutting system through modeling and solving rate and power propagation equations. For the optimized Ce3+, Nd3+, and Yb3+ concentrations under the fixed thickness of ...Show More
A novel application of near-infrared quantum splitting (NIR QS) that splits one ultraviolet-visible photon into NIR multiphotons can be developed for solar energy conversion. In this paper, we theoretically investigate the underlying mechanism of NIR QS in Ho3+ single- and Ho3+-Yb3+ dual-doped β-NaYF4 by modeling and solving rate and power propagation equation system. The highest quantum efficienc...Show More
In this paper, a framework for investigating and optimizing Ce3+ -Tb3+/Yb3+ tripled-doped solar spectral downconverting layer is provided. We investigate broadband solar spectral downconversion in near-infrared (NIR) quantum cutting system of Ce3+-Tb3+/Yb3+ triple-doped YBO3 employed by modeling and solving rate and power propagation equations of Ce3+-Tb3+/Yb3+ . For the optimized Ce3+, Tb3+, and ...Show More
Cooperative quantum cutting mechanism in a spectral converter of Tm3+/Yb3+-codoped tellurite glass is investigated by setting up and solving the theoretical model of rate equations and power propagation equations in MATLAB. Based on the optimal rare-earth (RE) ion concentration and the thickness of the spectral converter, a 155% total power conversion efficiency and a 171% total quantum conversion...Show More
Surface plasmon resonance for sensing
2012 12th International Conference on Numerical Simulation of Optoelectronic Devices (NUSOD)
Year: 2012 | Conference Paper |
We design a structure consisting of Ag strip pair arrays embedded in the background material to achieve localized surface plasmon resonance. Numerical simulation shows that one of the transmission dips of the structure is very sensitive to the background materials, which can be used to achieve high performance sensors.Show More
Sharp Bend With High Transmission at Microwave Frequencies by Nonreciprocal Magnetic Domain Wall Waveguide
Based on the nonreciprocal magnetic domain wall (NMDW), we propose a method to achieve 2-D bends as sharp as 90 and 120. Numerical simulations reveal great transmission improvements induced by NMDW over wide frequency ranges in microwave regime. For 90 and 120 bends, the transmission improvements are from 69% and 48% to 95% and 91%, respectively. The bending structure is very efficient and compact...Show More
Photonic Crystal Three-Port Channel Drop Filter Based on One-Way Waveguide
Hongliang Ren;Yali Qin;Hao Wen;Quanjun Cao;Shuqin Guo;Liping Chang;Weisheng Hu;Chun Jiang;Yaohui Jin
IEEE Photonics Technology Letters
Cited by: Papers (13)
We design a highly efficient three-port channel drop filter (CDF) with only one channel drop micro-cavity based on photonic crystal (PC) one-way waveguide. According to the coupled mode theory in time, the conditions to achieve 100% drop efficiency are derived thoroughly. The numerical results are all calculated by using the finite element method, and accord well with the theoretical analysis. Com...Show More
Highly efficient channel drop filter based on photonic crystal oneway waveguide
Hongliang Ren;Hao Wen;Yali Qin;Shuqin Guo;Weisheng Hu;Chun Jiang;Yaohui Jin
2011 Asia Communications and Photonics Conference and Exhibition (ACP)
Year: 2011 | Conference Paper |
We design a highly efficient channel drop filter (CDF) with only one channel drop micro-cavity based on photonic crystal (PC) one-way waveguide. By means of the new nature of waveguide-cavity interaction, over 95% channel drop efficiency can be realized in the structure. Some multichannel drop filters with high drop efficiencies are also engineered based on such the structure. These numerical resu...Show More
Optical Isolation Based on Nonreciprocal Micro-Ring Resonator
Journal of Lightwave Technology
Cited by: Papers (8)
We propose a nonreciprocal waveguide with different wavevectors for forward and backward propagations. Utilizing this nonreciprocal waveguide, we further compose a nonreciprocal micro-ring resonator, which possesses different phase shifts for clockwise and anticlockwise circulatings. Using this nonreciprocal resonator, more than 20 dB optical isolation can be achieved. This work demonstrates that ...Show More
Extraordinary Coupling Into One-Way Magneto-Optical Photonic Crystal Waveguide
Journal of Lightwave Technology
Cited by: Papers (10)
We present a two-dimensional magneto-optical photonic crystal waveguide, in which TM mode with proper frequency can propagate only in one direction. The photonic crystal is composed of square-lattice yttrium-iron-garnet (YIG) rods, with static magnetic field applied on it. In a special frequency range, this waveguide possesses only forward mode, while in another special frequency range, only backw...Show More
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