Article
Engineering, Electrical & Electronic
Sandip Swarnakar, Surya Pavan Kumar Anguluri, Alluru Sreevani, Santosh Kumar
Summary: All-optical devices have various applications in communication and can enhance device efficiency as fundamental building blocks of integrated circuits. This paper presents the design of all-optical logic gates using a plasmonic-based Y-shaped power combiner, with simulation and analysis carried out using MATLAB and finite-difference time domain method.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Physics, Applied
Rong Su, MingZhe Hu, LePeng Zhang, Yi Ren, Dayue Yao, Yanli Xu, HaoChi Zhang
Summary: The dual band filtering characteristics of a spoof surface plasmonic waveguide loaded with a composite slot structure are studied. The proposed filter enables the waveguide to work at dual bands with adjustable working bandwidth and strong isolation ability.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Engineering, Electrical & Electronic
Amin Ghadi, Mahdi Gholipour Asl
Summary: In this study, five nano logical gates were designed and their transmission performance and response time were simulated. The results showed good performance for all gates, and the calculation of manufacturing tolerance proved to be effective in considering production errors.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Engineering, Electrical & Electronic
Amrindra Pal, Mohammed Zaheer Ahmed, Sandip Swarnakar
Summary: All-optical logic gates have great potential in ultra-high-speed Boolean operation and logical computation. This study proposes XOR, OR, and NOT gates using metal-insulator-metal waveguides with a smaller footprint than previously reported. The device's performance is analyzed using the finite-difference time-domain method (FDTD) and verified through MATLAB simulation, with an extinction ratio of 27.80 dB. These logic gates can serve as key components in optical communication and pave the way for new designs in plasmonic integrated circuits.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Surya Pavan Kumar Anguluri, Srinivas Raja Banda, Sabbi Vamshi Krishna, Sandip Swarnakar, Santosh Kumar
Summary: The novel design of an all-optical AND gate using a power combiner based on a Y-shaped metal-insulator-metal waveguide with a 4 μm × 7 μm footprint operates on the principle of linear interference. The design has an insertion loss of 0.165 and an extinction ratio of 14.11 dB, with analysis conducted using the finite-difference time-domain (FDTD) method and verification using MATLAB. This minimized structure can be used to design complex logic circuits for better performance in the future.
JOURNAL OF COMPUTATIONAL ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Huali Zhu, Yong Zhang, Longfang Ye, Yukun Li, Yuehang Xu, Ruimin Xu
Summary: The paper presents and demonstrates a terahertz bandpass filter based on SIPW, which achieves engineered transmission characteristics by adjusting the geometric parameters of SIW and SSPPs. Experimental results validate the effectiveness of the design in the terahertz range.
RESULTS IN PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Hala Mossad Hassan, Nihal F. F. Areed, H. A. El-Mikati, Mohamed Farhat O. Hameed, S. S. A. Obayya
Summary: This paper proposes and analyzes a new design of hybrid plasmonic photonic crystal waveguide at a wavelength of 1550 nm. By adjusting the cladding geometry, it is found that long propagation length and good field confinement can be achieved.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Optics
Vishal Sorathiya, Osama S. Faragallah, Hala S. El-Sayed, Mahmoud M. A. Eid, Ahmed Nabih Zaki Rashed
Summary: This article introduces a novel method for achieving nanofocusing from single-mode fiber to photonic crystal. By using a staircase structure, nanofocusing in the range of nanometers has been achieved. The mathematical modeling of the nanofocusing structure is also demonstrated and compared with simulation results.
APPLIED PHYSICS B-LASERS AND OPTICS
(2022)
Article
Physics, Applied
Xuewei Zhang, Shaobin Liu, Kun Liao, Jian Lou
Summary: In this paper, a novel ultra-wideband high-efficiency bandpass filter based on a surface plasmonic waveguide (SPW) is proposed. By using glide symmetry technology, the filter achieves higher propagation constant and efficient transmission. A prototype has been manufactured and measured, showing good agreement with simulations.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Optics
Jincheng Wang, Hengli Feng, Jingyu Zhang, Chang Liu, Zuoxin Zhang, Dongchao Fang, Lehui Wang, Yang Gao
Summary: This paper proposes a bilateral asymmetric equilateral triangular ring (ETR) band-stop filter based on metal-insulator-metal (MIM) waveguide and investigates its transmission spectrum and electric field distribution using finite difference time domain (FDTD) and coupled mode theory (CMT) method. The results show that changing the number and position of resonant cavities can adjust the transmission characteristics of the filter. The filter has a minimum transmission of 0.1% and a sensitivity of 1149 nm/RIU, making it suitable for highly integrated optical circuits and refractive index sensors.
Article
Optics
Huibo Fan, Ruijuan Chang, Arui Wang, Xinrui Chen
Summary: In this paper, we propose and analyze tunable Fano resonance based on indirect interaction between two Taiji resonators. By tailoring the propagating modes in the Taiji resonator, the number of whispering-gallery modes can be varied, leading to convenient tuning of Fano resonance lineshape. The use of monolayer graphene and UV-glue enables all-optical tuning and high-sensitivity temperature sensing, respectively.
OPTICS COMMUNICATIONS
(2023)
Article
Optics
Lokendra Singh, Reshu Saxena, Guo Zho, Chinmoy Saha, Prakash Pareek
Summary: The one-to-one mapping in reversible logic gates prevents information loss and shows potential applications in various fields. The proposed all-optical compact circuit utilizes an MIM waveguide-based MZI to function Feynman reversible and NOR logic gates.
OPTICS COMMUNICATIONS
(2022)
Article
Engineering, Electrical & Electronic
Shiva Khani, Mohammad Danaie, Pejman Rezaei
Summary: In this paper, an all-optical plasmonic modulator with a tunable data wavelength is designed. By using separate waveguide paths for data and control signals, interference between the signals is prevented. According to simulation results, the maximum transmittance of the data wavelength can be modulated from 8.1% to 50.2% by applying both data and control signals simultaneously. The designed structure has separate and isolated paths, a relatively small footprint, and a symmetrical structure, making it suitable for complex integrated optical circuits.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Xin Huang, Yang Guo, Shuo Du, Qinghu Bai, Chi Sun, Leyong Hu, Ruixuan Zheng, Peng Fu, Yang Yang, Aizi Jin, Kenji Watanabe, Takashi Taniguchi, Junjie Li, Baoli Liu, Changzhi Gu
Summary: This paper presents a method to achieve strongly enhanced linearly polarized emission by integrating monolayers of transition metal dichalcogenides (TMDCs) with a designed plasmonic nanocavity. The results show that plasmon-exciton coupling leads to the formation of plasmon-exciton polaritons, which contribute to a significantly higher linear polarization at room temperature.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Yang Shen, Guanchu Wang, Qiushun Zou, Xiaoyi She, Da Cai, Chongjun Jin
Summary: This study introduces a high-performance relative humidity sensor driven by a plasmonic-photonic hybrid system, which offers ultrahigh sensitivity and accuracy in humidity detection. The sensor shows great potential in medical diagnostics and optical modulation applications, demonstrating its versatility and reliability in various fields.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Optics
Sayed Elshahat, Zain Elabdeen A. Mohamed, Mohamed Almokhtar, Cuicui Lu
Summary: By inserting a defect layer into a one-dimensional topological photonic crystal, high tunability and sensing performance can be achieved while preserving the principle of topology. It shows high sensitivity and high quality factor for glucose sensing.
Review
Materials Science, Multidisciplinary
Xinyue Wang, Wen Zhao, Hongyu Zhang, Sayed Elshahat, Cuicui Lu
Summary: This review provides an overview of various topological states in photonics based on the magnetic-optic effect, including traditional chiral edge states and novel topological states with applications in wave propagation and manipulation. The wide range of applications for these topological states include one-way waveguides, isolators, slow light, and nonreciprocal Goos-Hanchen shift.
FRONTIERS IN MATERIALS
(2022)
Article
Physics, Multidisciplinary
Sayed Elshahat, Cuicui Lu
Summary: The development of topological photonic crystals provides a robust platform for nanophotonic devices. By adjusting the thickness distribution of chirped one-dimensional photonic crystals, unidirectional or bidirectional rainbow trapping can be achieved.
FRONTIERS IN PHYSICS
(2022)
Article
Materials Science, Ceramics
Haiyan Shi, Qi Song, Yu Hou, Song Yue, Yan Li, Zhe Zhang, Man Li, Kunpeng Zhang, Zichen Zhang
Summary: This study presents a comprehensive investigation of the structural transformation and residual stress induced by femtosecond laser irradiation on a 4H-SiC target. The obtained results show energy-dependent structural characteristics and spatial distribution. It provides insights into the laser-material interaction mechanisms and offers suggestions for improving surface quality.
CERAMICS INTERNATIONAL
(2022)
Article
Physics, Multidisciplinary
Yaohua Li, Chao Liang, Chenyang Wang, Cuicui Lu, Yong-Chun Liu
Summary: The study reveals the gain-loss-induced hybrid second-order skin-topological effect and the PT phase transition in skin-topological modes. The localized behavior of topological edge modes on a special type of corner, in contrast to the extended bulk modes, is found to be related to the interplay between gain, loss, and the chiral edge currents induced by nonlocal flux. The research establishes a relation between the skin-topological effect and the PT symmetries belonging to different edges.
PHYSICAL REVIEW LETTERS
(2022)
Article
Multidisciplinary Sciences
Cuicui Lu, Yi-Zhi Sun, Chenyang Wang, Hongyu Zhang, Wen Zhao, Xiaoyong Hu, Meng Xiao, Wei Ding, Yong-Chun Liu, C. T. Chan
Summary: The authors provide experimental observation of a topological rainbow in a silicon-based nanophotonic chip, presenting a robust platform for next-generation nanophotonic chips. The topological rainbow separates and traps different frequencies of topological photonic states into different positions, promising high-density integration on-chip.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Ran Wang, Song Yue, Zhe Zhang, Yu Hou, Hongda Zhao, Shitian Qu, Man Li, Zichen Zhang
Summary: This paper numerically demonstrates a broadband perfect absorber in the visible range, which has a high absorptance and potential applications in photovoltaics and photodetection.
Article
Physics, Multidisciplinary
Zhidong Wen, Haiyan Shi, Song Yue, Man Li, Zhe Zhang, Ran Wang, Qi Song, Ziye Xu, Zichen Zhang, Yu Hou
Summary: This study creatively proposes a method of femtosecond laser-induced black silicon assisted with laser plasma shockwave cleaning, which achieves higher, denser, and more uniform microstructures in the preparation of large-scale black silicon. It is beneficial for realizing large-scale preparation of photoelectric devices based on black silicon.
FRONTIERS IN PHYSICS
(2022)
Article
Engineering, Industrial
Haiyan Shi, Zhe Zhang, Songmei Yuan, Zhen Li, Yu Hou, Song Yue, Ran Wang, Man Li, Zichen Zhang
Summary: This study investigates the material removal mechanism of carbon fiber reinforced polymer composites in rotary ultrasonic machining (RUM) for different fiber orientations. The experimental results reveal that the fracture mode of fiber is mainly determined by the cutting angle, and the surface crack propagation can be significantly inhibited with the addition of ultrasonic vibration.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2022)
Article
Optics
Wen Zhao, Yanji Zheng, Cuicui Lu
Summary: This research proposes a method to achieve topological rainbow trapping using non-Hermitian twisted piecing photonic crystals. Different frequencies of photonic states can be separated and trapped in different positions without overlap, and the frequencies of interface states can be modulated by loss, leading to the realization of a topological rainbow effect.
PHOTONICS RESEARCH
(2022)
Editorial Material
Materials Science, Multidisciplinary
Zhiwei Guo, Cuicui Lu, Xiao Lin, Xingjie Ni
FRONTIERS IN MATERIALS
(2022)
Article
Optics
Toughui Dou, Song Yue, Ran Wang, Yu Hou, Haiyan Shi, Zhe Zhang, Yuxin Liu, Mei Xue, Zichen Zhang
Summary: In this study, an intelligent inverse design algorithm combining adaptive genetic algorithm and finite element simulations is proposed, and a set of arbitrary-order mode converters with low excess losses and low crosstalk is successfully designed. The designed mode converters have a small footprint of only 1.8 x 2.2 µm2 at the communication wavelength of 1550 nm. The conversion efficiency, excess losses, and crosstalk of the mode converters are characterized, and the results show promising performance for mode conversion in multimode photonics and mode-division multiplexing applications.
Article
Physics, Multidisciplinary
Xinyue Wang, Wen Zhao, Sayed Elshahat, Cuicui Lu
Summary: In this study, rotated gradient valley photonic crystals (PCs) are proposed to achieve topological rainbow trapping. The presence of pillars of different shapes does not affect the formation of topological rainbow, highlighting the design's universality. Loss is introduced to explore the topological rainbow trapping of the non-Hermitian valley PC. The rainbow is robust and topologically protected in both Hermitian and non-Hermitian cases, as confirmed by perturbations and defects. This study presents an intriguing step for light control and potential applications in optical buffering and frequency routing.
FRONTIERS IN PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Hongyi Yuan, Nianen Zhang, Hongyu Zhang, Cuicui Lu
Summary: This study proposes a bandgap optimization algorithm for designing a multi-channel frequency router using the finite element method and topology optimization. The device has a compact size and can increase the number of channels and output ports up to nine, covering the telecom wavelength of 1.55 μm. The method is general and can be applied to different materials and frequency ranges, providing a new approach for on-chip multi-channel broadband information processing.
Article
Spectroscopy
Gao Xi-ya, Zhang Zhu-shan-ying, Lu Cui-cui, Meng Yong-ji, Cao Hui-min, Zheng Dong-yun, Zhang Li, Xie Qin-lan
Summary: Hemoglobin is an important physiological index of the human body, and abnormal concentrations can lead to diseases. Infrared spectroscopy is simple, non-destructive, and rapid, making it suitable for quantitative analysis. However, extracting effective variables and building an accurate model is challenging due to the complexity of spectral background.
SPECTROSCOPY AND SPECTRAL ANALYSIS
(2023)
