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2023 International Conference on Optoelectronic Materials and Devices, ICOMD 2023

作者： Chen, Jie Liu, Yang Xie, Quanhua He, Yuanyuan Chang, Haixing Zhong, Dengjie Zhong, Nianbing Intelligent Fiber Sensing Technology of Chongqing Municipal Engineering Research Center of Institutions of Higher Education Chongqing Key Laboratory of Modern Photoelectric Detection Technology and Instrument Chongqing Key Laboratory of Fiber Chongqing400054 China School of Chemistry and Chemical Engineering Chongqing University of Technology Chongqing400054 China

ISBN: (纸本)9781510674509

In this study, a novel coupling strategy of visible-light photocatalytic hollow optical fiber and graphite carbon nitride matrix composite was proposed to enhance the performance of photocatalytic reduction of CO2 and the efficiency of light energy utilization. The composite material (TMOF/CNNS) composed of TMOF-10-NH2 (TMOF) and g-C3N4 (CNNS) has an enhanced charge separation efficiency. The synthesized TMOF/CNNS photocatalyst was coated on the surface of the optical fiber. The photocatalytic activity of the prepared photocatalytic hollow optical fiber for the gas-phase reduction of CO2 was evaluated in the wavelength range of 380-780 nm. Compared with the photocatalytic reduction of CO2 in the gas phase with CNNS-coated hollow quartz fiber and CNNS-coated filter paper, the TMOF/CNNS-coated hollow quartz fiber significantly improved the CO2 yield and selectivity of CO. © 2024 SPIE. All rights reserved.

关键词： Carbon dioxide

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Piezoelectret-Based Dual-Mode Flexible Pressure Sensor for Accurate Wrist Pulse Signal Acquisition in Health Monitoring

SSRN

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SSRN 2024年

作者： Qiu, Xunlin Gao, Tiantian Xu, Peng Hu, Zheng Yan, Jianjun Xiang, Yanxun Xuan, Fu-Zhen Shanghai Key Laboratory of Intelligent Sensing and Detection Technology School of Mechanical and Power Engineering East China University of Science and Technology Shanghai200237 China

Acquirement of high-quality pulse signals has attracted much attention in recent years. Here, dual-mode pressure sensors capable of detecting both static force and dynamic pulse signals are achieved based on piezoelectret films. Thanks to the high piezoelectric sensitivity, piezoelectret sensors can effectively detect ultra-low pressure radial artery pulses. Moreover, due to their anisotropic foam structure, piezoelectrets are highly compressible in the thickness direction. The capacitance of the piezoelectret sensors is taken for monitoring the static force applied on wrist to compress the radial artery. Our results show that the profile of the detected pulse signals strongly depends on the static force. Clear pulse signals with detailed information are detected at moderate optimal static force. This work showcases that single piezoelectret-based pressure sensors can be employed for multimodal measurement for both static and dynamic pressures, exhibiting great potential in flexible and wearable sensors for accurate pulse detection in health monitoring. © 2024, The Authors. All rights reserved.

关键词： Pressure sensors

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Two-photon 3D printed fiber-optic Fabry–Perot probe for triaxial contact force detection of guidewire tips

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Photonics Research 2024年第11期12卷 2474-2487页

作者： RUIXUE YIN YUHANG YANG LINSONG HOU HEMING WEI HONGBO ZHANG WENJUN ZHANG Shanghai Key Laboratory of Intelligent Sensing and Detection East China University of Science and TechnologyShanghai 200237China National Center for Translational Medicine(Shanghai)SHU Branch Shanghai UniversityShanghai 200444China Key Laboratory of Specialty Fiber Optics and Optical Access Networks Shanghai UniversityShanghai 200444China Department of Mechanical Engineering University of SaskatchewanSaskatoonSaskatchewan S7N5A9Canada

The demand for real-time feedback and miniaturization of sensing elements is a crucial issue in the treating vascular diseases with minimally invasive ***,Fabry–Perot microcavities fabricated via direct laser writing using a two-photon polymerization technique on fiber tips are proposed,designed,simulated,and experimentally demonstrated as a miniature triaxial force sensor for monitoring real-time interactions between the tip of a guidewire and human blood vessels and tissues during minimally invasive *** sensor contains four fiber tip-based Fabry–Perot cavities,which can be seamlessly integrated into medical guidewires and achieves three-axis force decoupling through symmetrically arranged flexible *** results showed that the proposed sensor achieved a cross-sectional diameter of 890μm and a high sensitivity of about 85.16 nm/N within a range of 0 to 0.5 N with a resolution of hundreds of *** proposed triaxial force sensor exhibits high resolution,good biocompatibility,and electromagnetic compatibility,which can be utilized as an efficient monitoring tool integrated into minimally invasive surgical intervention devices for biomedical applications.

关键词： sectional utilized compatibility

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Artificial optical microfingerprints for advanced anticounterfeiting

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Nano Research 2024年第5期17卷 4371-4378页

作者： Xueke Pang Qiang Zhang Jingyang Wang Xin Jiang Menglin Wu Mingyue Cui Zhixia Feng Wenxin Xu Bin Song Yao He Suzhou Key Laboratory of Nanotechnology and Biomedicine Institute of Functional Nano&Soft Materials&Collaborative Innovation Center of Suzhou Nano Science and Technology(NANO-CIC)Soochow UniversitySuzhou 215123China School of Sensing Science and Engineering Shanghai Engineering Research Center for Intelligent Diagnosis and Treatment InstrumentSchool of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240China

Artificial optical microfingerprints,known as physically unclonable functions(PUFs)offer a groundbreaking approach for ***,these PUFs artificial optical microfingerprints suffer from a limited number of challenge-response pairs,making them vulnerable to machine learning(ML)attacks when additional error-correcting units are *** study presents a pioneering demonstration of artificial optical microfingerprints that combine the advantages of PUFs,a large encoding capacity algorithm,and reliable deep learning authentication against ML *** approach utilizes the triple-mode PUFs,incorporating bright-field,multicolor fluorescence wrinkles,and the topography of surface enhanced Raman scattering in the mechanical and optical ***,the quaternary encoding of these PUFs artificial microfingerprints allows for an encoding capacity of 6.43×10^(24082) and achieves 100%deep learning recognition ***,the PUFs artificial optical microfingerprints exhibit high resilience against ML attacks,facilitated by generative adversarial networks(GAN)(with mean prediction accuracy of~85.0%).The results of this study highlight the potential of utilizing up to three PUFs in conjunction with a GAN training system,paving the way for achieving encoded information that remains resilient to ML attacks.

关键词： artificial microfingerprints physically unclonable functions deep learning anti-counterfeiting

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Simulation and retrieval for spaceborne aerosol and cloud high spectral resolution lidar of China

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Science China Earth Sciences 2022年第3期65卷 570-583页

作者： Feiyue MAO Xi LUO Jie SONG Zhenxin LIANG Wei GONG Weibiao CHEN School of Remote Sensing and Information Engineering Wuhan UniversityWuhan 430079China State Key Laboratory of Information Engineering in Surveying Mapping and Remote SensingWuhan UniversityWuhan 430079China Electronic Information School Wuhan UniversityWuhan 430079China Key Laboratory of Space Laser Communication and Detection Technology Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China

Clouds and aerosols can significantly affect global climate change and the atmospheric environment,and observing them three-dimensionally with high spatial and temporal resolutions is a long-standing *** lidars are effective instruments for the vertical detection of clouds and aerosols *** Mie scattering lidars were successfully launched and widely used,such as the Cloud-Aerosol Lidar with Orthogonal Polarization(CALIOP)and Geoscience Laser Altimeter ***,the retrieval of Mie scattering lidar data is an ill-posed problem that introduces a large *** spaceborne Aerosol and Cloud High Spectral Resolution Lidar(ACHSRL)of China is currently under development and scheduled for launch in the near *** ACHSRL attracted extensive attention,because it can separate Mie and Rayleigh scattering signals and avoid ill-posed *** this study,we conducted ACHSRL signal simulation and retrieval to explore the potential of the ***,we proposed a simplified scheme for retrieving optical parameters,which reduced the number of equations and intermediate variables of the traditional method and avoided false extrema in the backscatter coefficient ***,the experiments showed that the backscatter coefficient retrieval was overestimated owing to the influence of the Poisson noise but can be ***,we examined the feasibility of the strategy of“first retrieving the lidar ratio then retrieving the extinction coefficient”to improve the extinction coefficient *** found that the retrieval error in the simulated cases can be reduced to less than 1%of the original retrieval ***,we discussed the influence of the uncertainty of the iodine filter transmittance on the retrieval of the optical parameters and found that the average relative error was less than 1‰.Finally,we conducted simulation and retrieval based on the atmospheric parameters measured by the *** showed that

关键词： Atmospheric environment Laser detection Satellite Signal simulation Extinction coefficient Backscatter coefficient

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SAR Aircraft detection based on Scattering Enhancement and Location Attention network 2

SAR Aircraft Detection based on Scattering Enhancement and L...

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2nd IEEE International Conference on Signal, Information and Data Processing, ICSIDP 2024

作者： Huang, Bocheng Quan, Sinong Zhang, Tao Wei, Feiming Yang, Zhen Shanghai Jiao Tong University Shanghai Key Laboratory of Intelligent Sensing and Recognition Shanghai China National University of Defense Technology School of Electronic Science and Engineering Changsha China Jiangxi Science and Technology Normal University School of Communication and Electronics Nanchang China

ISBN: (纸本)9798331515669

Due to the interference caused by the complex background and the discreteness of aircraft scattering, the task of detecting aircraft in synthetic aperture radar (SAR) images remains a challenging one. To address these problems, a novel method named scattering enhancement and location attention network (SELANet) is here proposed to detect aircraft via combining traditional image processing and deep learning together. At first, a scattering information enhancement module (SIEM) is proposed to highlight the scattering points of aircraft targets. Moreover, to more effectively focus on the location of aircraft targets, a spatial location attention module (SLAM) is further designed. Experiments are performed on the SADD dataset and the results indicate that SELANet is more apt for aircraft detection. On average, the Precision, Recall, and F1-score values are respectively 3.6%, 2.9%, and 3.2% higher than the baseline of standard YOLOv8s algorithm. © 2024 IEEE.

关键词： Aircraft detection

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A Novel Monolithic Integration Of HEMT And Micro-LED Performing As A Photodetector 20

A Novel Monolithic Integration Of HEMT And Micro-LED Perform...

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20th China International Forum on Solid State Lighting and 9th International Forum on Wide Bandgap Semiconductors, SSLCHINA: IFWS 2023

作者： Wang, Haoyu Gao, Yuan Li, Yi Ren, Kailin Yin, Luqiao Zhang, Jianhua School of Microelectronics Shanghai University Shanghai200444 China Shanghai University Shanghai Key Laboratory of Chips and Systems for Intelligent Connected Vehicle Shanghai200444 China Shanghai Collaborative Innovation Center of Intelligent Sensing Chip Technology Shanghai University Shanghai200444 China Shanghai University New Display Technology and Application Integration Laboratory Shanghai200444 China

ISBN: (纸本)9798350385373

Micro light-emitting diode (LED (LED) is considered as a promising next-generation display technology, owing to its superior performances such as high efficiency and fast response. Although GaN-based Micro-LED is mainly used as a light source, it can be utilized as a photodetector as well due to its crystal structure and material properties. This dual function enables Micro-LED to realize the monolithic integration of light source and photodetector, making it advantageous in visible light communication (VLC) applications. In this paper, a new monolithic integrated device of GaN-based high electron mobility transistor (HEMT) and Micro-LED is proposed by merging the features of HEMT and LED epitaxy without selective epitaxial growth, to integrate driving transistor and Micro- led on the same substrate. In this paper, the integrated HEMT-LED structure was tested as an optical detector under the wavelength of 365nm, 395nm and 425nm and the optical current at different light intensities. The response rate and bright/dark current ratio were derived. At the wavelength of 365 nm, the light intensity reaches its maximum value of 4.06 × 10-4 mW/cm2, and a peak responsivity of 7000 A/W is obtained. This work provides a promising solution for the future exploration of the device structure design of monolithic integration of light source and optical detector in VLC systems. © 2023 IEEE.

关键词： Light emitting diodes

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Study on carbon dioxide concentration sensor with fiber Bragg grating

Study on carbon dioxide concentration sensor with fiber Brag...

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2023 International Conference on Optoelectronic Materials and Devices, ICOMD 2023

作者： Song, Shaoxiong Li, Linyang Liu, Yang Xie, Quanhua He, Yuanyuan Peng, Xiaoling Wan, Bo Liu, Yang Zhong, Nianbing Chongqing Key Laboratory of Optical Fiber Sensor and Photoelectric Detection Chongqing Engineering Research Center of Intelligent Optical Fiber Sensing Technology Chongqing University of Technology Chongqing400054 China Meishan San Su Shrine Museum Sichuan Meishan620010 China

ISBN: (纸本)9781510674509

In this work, we introduced a polymer-based fiber Bragg grating sensor for carbon dioxide (CO2). The device integrates a polymer coating on the fiber Bragg grating sensor as a CO2-sensitive region, and then a hydrophobic zeolite is coated on the surface to isolate water vapor interference. To eliminate the effect of temperature on the sensor detection performance, an uncoated fiber Bragg grating was introduced as a temperature compensation unit. Then, a CO2 detection system was constructed to simulate the carbon sequestration environment to calibrate the CO2 concentration for sensors and to analyze the sensor performance under different environmental conditions. The experimental analysis shows that the fiber Bragg grating CO2 sensor not only has high CO2 sensitivity, but also has excellent reversibility and stability in high temperature and high humidity environments. © 2024 SPIE. All rights reserved.

关键词： Fiber Bragg gratings

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Highly Reliable Multilayer Encryption Scheme With Constellation Shaping Based on Joint Index Modulation

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Journal of Lightwave technology 2025年第12期43卷 5689-5698页

作者： Zhu, Dongxu Liu, Bo Ren, Jianxin Mao, Yaya Song, Xiumin Chen, Shuaidong Zhao, Lilong Yin, Mengtong Dai, Wei Chen, Guoqing Cai, Junjie Institute of Optics and Electronics Nanjing University of Information Science & Technology Nanjing210044 China State Key Laboratory Cultivation Base of Atmospheric Optoelectronic Detection and Information Fusion Nanjing University of Information Science & Technology Nanjing210044 China Jiangsu International Joint Laboratory for Meteorological Photonics and Optoelectronic Detection Nanjing University of Information Science & Technology Nanjing210044 China Jiangsu Engineering Research Center for Intelligent Optoelectronic Sensing Technology of Atmosphere Nanjing University of Information Science & Technology Nanjing210044 China Beijing University of Posts and Telecommunications Beijing100876 China Department of Electronic Engineering Tsinghua University Beijing100084 China

This paper proposes a highly reliable multilayer encryption scheme with constellation shaping based on joint index modulation. Multilayer encryption is used to ensure the security of the scheme. We utilize the 3D-Zhang chaotic system to realize the multidimensional perturbation of bits, subcarriers, and symbols of the original signal. The key information is masked with the signal using joint index modulation (JIM). The cooperative transmission of the initial value of the chaotic system is realized through the position information of the silent subcarriers and the constellation modes of the corresponding subcarriers. The scheme interleaves the initial values of the two chaotic systems to encode them as index bits, realizing the first layer of masked keys. Additional constellation shaping is achieved by optimizing the index mapping rules and changing the distribution of constellation points in the center and in the dual mode. The rotational encryption of the constellation is realized using a one-dimensional sinusoidal chaotic system after the completion of JIM, and the second layer of spherical shell masking of the key information is completed. The experimental implementation demonstrates the successful transmission of a 14 Gb/s 3D-JIM -8QAM signal over a 2 km weakly coupled seven-core fiber. Results confirm that the multi-layer encryption approach ensures secure signal transmission even under partial key leakage, without introducing degradation to the system's transmission performance. Compared to a random constellation distribution, the optimized index mapping scheme provides a coding gain of 0.75 dB at an FEC (Forward Error Correction) threshold of 3.8×10-3. The proposed scheme achieves error-free key transmission, with a bit error rate (BER) consistently maintained at 0. Notably, even minor key misalignments result in a BER of 0.5, facilitating timely key updates. The scheme boasts a vast key space of 10150, effectively resisting brute-force attacks. Due to its hi

关键词： Forward error correction

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A Technique for Altering Face Attributes Based on Differential Structure 22

A Technique for Altering Face Attributes Based on Differenti...

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6th International Conference on Big Data and Internet of Things, BDIOT 2022

作者： Li, Yue He, Xiping He, Dan Yuan, Rui Chongqing Key Laboratory of Intelligent Sensing and Blockchain Technology School of Artificial Intelligence Chongqing Technology and Business University Chongqing400067 China Chongqing Key Laboratory of Intelligent Sensing and Blockchain Technology Chongqing Engineering Laboratory for Detection Control and Integrated System Chongqing Technology and Business University Chongqing400067 China

ISBN: (纸本)9781450390361

The task of face attribute editing refers to the implementation of specified attribute editing by integrating encoder-decoder and generative adversarial networks. The majority of current codec architectures carry out attribute editing by providing the generator with both the source face attribute vector and the destination face attribute vector. Nevertheless, using the entire target attribute vector as input more often hurts the editing outcomes, leading to modifications in unnecessary areas and blurring of image features. This paper suggests an attribute difference method that uses the difference between the target attribute and the source attribute vector as the encoder-decoder input to improve the flexible editing ability of attributes, taking into account that a particular editing task is only related to the attribute to be changed. Constrained picture reconstruction quality, detailed information preservation, and effective attribute editing are achieved simultaneously by combining the reconstruction loss, adversarial loss, and attribute classification loss as the algorithm's loss expression. Experiments demonstrate that the suggested approach successfully address the issue of blurring the details in the generated image as well as precisely alter the face attributes. © 2022 ACM.

关键词： Generative adversarial networks

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