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检索条件"任意字段=Conference on Optical Information Processing Technology"

共 12819 条记录，以下是1-10 订阅

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A review of applied research on microwave absorption and stealth technology 2

A review of applied research on microwave absorption and ste...

引用

2nd International conference on optical Communication and optical information processing, OCOIP 2024

作者： Zeng, Xianren Li, Lingzhan Tan, Yonghong Li, Linmei School of Intelligent Manufacturing Hunan University of Science and Engineering Yongzhou Hunan425199 China School of Physics and Electronic Science Hunan University of Science and Technology Xiangtan Hunan411201 China

ISBN: (数字)9781510688995

ISBN: (纸本)9781510688988

Microwave technology has seen widespread application in both the military industry and various aspects of daily life, driven by rapid advancements in information technology. Microwave absorption and stealth technology pose additional challenges. In particular, achieving a high broadband absorption rate has emerged as a significant bottleneck. This paper comprehensively reviews the latest research progress in microwave absorption and stealth technology. It introduces in detail the technological advancements in absorbing structures and devices, the research on absorbing materials, and the applications of absorbing metamaterials. Finally, the paper outlines the future development trends and new directions for microwave absorption and stealth technology applications. It serves as a valuable reference for new scholars in the field, enabling them to quickly grasp the direction and cutting-edge technologies involved. © 2025 SPIE.

关键词： Stealth technology

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Robust Image Watermarking Algorithm Based on Residual Neural Networks

Robust Image Watermarking Algorithm Based on Residual Neural...

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2024 International conference Optoelectronic information and optical Engineering, OIOE 2024

作者： Wang, Yunfei Lu, Gehao School of Information Science Yunnan University Kunming650500 China

ISBN: (数字)9781510688209

ISBN: (纸本)9781510688193

With the development of the Internet, information carriers and communication methods have become diversified. As an important carrier for obtaining information, images are easily copied and tampered with during the communication process. Digital watermarking technology is an effective technology to protect image copyrights. In recent years, with the development of artificial intelligence, scholars have begun to apply deep learning technology to digital watermarking technology. This article proposes a digital watermarking technology based on residual neural networks, which consists of host image processing network, watermark processing network, watermark embedding network, and watermark extraction network. Experiments show that the watermarking algorithm can effectively resist common attacks on images, has good robustness, and the image will not change greatly after embedding the watermark, so it has good invisibility. © 2025 SPIE.

关键词： Network embeddings

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Thin-film lithium niobate multimode anti-symmetric chirped Bragg grating for dispersion compensation 2

Thin-film lithium niobate multimode anti-symmetric chirped B...

引用

2nd International conference on optical Communication and optical information processing, OCOIP 2024

作者： Lin, Kebai Yuan, Mingxiu Chen, Chi Han, Ya Peng, Di Qiu, Shuoyang Huang, Quandong Li, Jianping Xiang, Meng Fu, Songnian Qin, Yuwen Institute of Advanced Photonics Technology School of Information Engineering Guangdong University of Technology Guangzhou510006 China Key Laboratory of Photonic Technology for Integrated Sensing and Communication Ministry of Education of China Guangdong University of Technology Guangzhou510006 China Guangdong Provincial Key Laboratory of Information Photonics Technology Guangdong University of Technology Guangzhou510006 China

We proposed a multimode anti-symmetric chirped Bragg grating for dispersion compensation on thin-film lithium niobate platform. A dispersion of 0.33 ps/nm over a bandwidth of 15 nm is demonstrated with 435 μm long gr... 详细信息

ISBN: (数字)9781510688995

ISBN: (纸本)9781510688988

关键词： Dispersion (waves)

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Fast quasi-adiabatic 3 dB power splitter on thin-film lithium niobate 2

Fast quasi-adiabatic 3 dB power splitter on thin-film lithiu...

引用

2nd International conference on optical Communication and optical information processing, OCOIP 2024

作者： Chen, Chi Yuan, Mingxiu Lin, Kebai Han, Ya Peng, Di Qiu, Shuoyang Li, Jianping Zhang, Cong Xiang, Meng Fu, Songnian Qin, Yuwen Institute of Advanced Photonics Technology School of Information Engineering Guangdong University of Technology Guangzhou510006 China Key Laboratory of Photonic Technology for Integrated Sensing and Communication Ministry of Education of China Guangdong University of Technology Guangzhou510006 China Guangdong Provincial Key Laboratory of Information Photonics Technology Guangdong University of Technology Guangzhou510006 China

ISBN: (数字)9781510688995

ISBN: (纸本)9781510688988

A compact and broadband 3 dB power splitter using a fast quasi-adiabatic (FAQUAD) approach is proposed on the thin-film lithium niobate platform. The FAQUAD approach effectively speeds up the adiabatic mode evolution process by homogeneously distributing adiabaticity over the device length. The simulation results exhibit that a short 28.6 μm-long FAQUAD power splitter can support a bandwidth of 100 nm with a 3 ± 0.55 dB power splitting ratio. © 2025 SPIE.

关键词： Waveguides Lithium niobate Thin films optical communications Photonics information technology Integrated optics Integrated photonics Light wave propagation optical switching

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A multi-mode excitation metasurface for microscale molecular thin film recognition and refractive index sensing 2

A multi-mode excitation metasurface for microscale molecular...

引用

2nd International conference on optical Communication and optical information processing, OCOIP 2024

作者： Li, Zhenyu Wu, Tiesheng Lan, Yujing Feng, Changpeng Cheng, Xin Huang, Yingshuang Tang, Yingtao Li, Hongyun Peng, Yiwei Guangxi Key Laboratory of Wireless Broadband Communication and Signal Processing School of Information and Communication Guilin University of Electronic Technology Guilin541004 China The Electronic Fifth Institute of the Ministry of Industry and Information Technology Guangzhou511370 China

ISBN: (数字)9781510688995

ISBN: (纸本)9781510688988

We propose a multi-mode all-dielectric metasurface using toroidal dipole (TD) resonance for microscale molecular recognition and refractive index sensing. CST electromagnetic simulation shows two mid-infrared resonance peaks with high sensitivity to refractive index and incident angle changes. The sensor has a theoretical Q value of 1.09×10^5 and can recognize AG proteins with significant mid-infrared absorption enhancement. It also has a high refractive index sensitivity with an FOM of 501.2. This provides a basis for the development of nanophotonics and ultra-sensitive optical sensors. © 2025 SPIE.

关键词： Infrared absorption

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Measurement of beam offset using wavefront distribution of vortex beam

Measurement of beam offset using wavefront distribution of v...

引用

2024 Advanced Fiber Laser conference, AFL 2024

作者： Cao, Yousheng Li, Xiaoji Key Laboratory of Cognitive Radio and Information Processing Ministry of Education Guilin University of Electronic Technology Guilin541004 China

ISBN: (数字)9781510688889

ISBN: (纸本)9781510688872

In the field of underwater wireless optical communication, optical transmitters and optical receivers need to track and align in real time, which poses challenges to the real-time and accuracy of the measurement method for beam offset. To address this issue, a two-dimensional signal cross-correlation method based on Fourier transform is proposed to measure the beam shift using the unique spatial distribution of vortex beams, and an experimental setup is established to verify the effectiveness of the proposed method. © 2025 SPIE.

关键词： Underwater optical wireless communication

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Design of optical transmission link of C-band program distribution system 2

Design of optical transmission link of C-band program distri...

引用

2nd International conference on optical Communication and optical information processing, OCOIP 2024

作者： Wang, Yi Space Star Technology Co. Ltd. China Academy of Space Technology Beijing100086 China

ISBN: (数字)9781510688995

ISBN: (纸本)9781510688988

For the program distribution system of satellite broadcasting and television system, in order to meet the requirements of international users to increase the reliability of the system, the two ground stations adopt the redundant 1:1 backup design. It is a big challenge to solve the problem of long-distance transmission of ground station RF signal and monitoring signal. The system introduces an optical transmission link design to reduce the communication loss in the long-distance transmission within ground station and between the ground station and the ground station, meet the requirements of EIRP and G/T value communication in the satellite link ground station, for supporting the normal transmission of satellite broadcast programs. The main contents include system communication function, performance, composition and main equipment design. The outstanding feature of the scheme is to use C-band optical terminal and digital optical terminal equipment for fusion communication to meet the long-distance transmission of C-band signals and monitoring signals in the system. The system has passed the engineering verification test, and has a strong reference significance for the disaster recovery design of the satellite ground station master and standby station and the improvement of the system's usability. © 2025 SPIE.

关键词： Satellite links

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Reconfigurable optical matrix operations based on GST superlattice microring array 2

Reconfigurable optical matrix operations based on GST superl...

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2nd International conference on optical Communication and optical information processing, OCOIP 2024

作者： Pang, Zhizhong Dong, Yida Shen, Mei Ge, Yanqi Lei, Lei Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province Shenzhen518060 China China College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen518060 China Academy for Advanced Interdisciplinary Studies Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen518000 China

ISBN: (数字)9781510688995

ISBN: (纸本)9781510688988

This paper presents a reconfigurable matrix operations for optical digital computing using microring resonator (MMR) array assisted by ZnS-SiO2/Ge2Sb2Te5 superlattice (GST-SL) phase-change material (PCM). By overlaying the GST-SL onto the MMR array, the resonant state of each MMR element can be adjusted according to the assigned matrix weights, thereby modifying the optical matrix transfer function to yield specific logical operations. This device combines both nonlinear and linear operations to achieve the building blocks, including logic minterms and maxterms, for complex logic functions. Based on the basic logic units, combinational logic functions such as full addition and full subtraction have been numerically demonstrated. Our nanostructure reduces computational complexity and provides a basis for future array expansion, offering a promising new approach for integrated optical computing and optical signal processing. © 2025 SPIE.

关键词： optical signal processing

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Quantum confocal imaging based on entangled photons 2

Quantum confocal imaging based on entangled photons

引用

2nd International conference on optical Communication and optical information processing, OCOIP 2024

作者： Tang, Wen-Zhuo Wang, Hong-Wei Luo, Yu-Hang de Rancourt de Mimérand, Yoann Hao, Xiangying Yuan, Chenzhi Jin, Rui-Bo Hubei Key Laboratory of Optical Information and Pattern Recognition Wuhan Institute of Technology Wuhan430205 China Key Laboratory for Green Chemical Process of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology School of Chemical Engineering and Pharmacy Wuhan Institute of Technology Wuhan430205 China

ISBN: (数字)9781510688995

ISBN: (纸本)9781510688988

Laser confocal imaging technology has become an important analytical tool in biological, biomedical, and materials science research, offering high imaging precision. However, this technology still has some limitations, especially in imaging biological samples (such as living tissues or cells), where the high intensity of the laser may cause irreversible photodamage. It has been proposed that quantum entangled light sources, instead of laser, can be used to avoid this drawback. In this paper, we experimentally demonstrated a quantum confocal imaging technology employing entangled photon sources with high brightness and stability. In the experiment, we obtained the point-by-point scanning imaging of a targeted area, in which a resolution of 3.91 µm is achieved and the signal-to-noise ratio (SNR) degradation is suppressed. We also theoretically analyzed the potential of quantum confocal imaging to improve SNR performance in photodamage-free imaging. Our results could widen the application fields of confocal imaging technology and pave the way for applying the quantum technology in biological imaging. © 2025 SPIE.

关键词： Quantum entanglement

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Investigation on helix side-pumping few-mode coupler with high pump efficiency and excellent modal gain flatness 2

Investigation on helix side-pumping few-mode coupler with hi...

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2nd International conference on optical Communication and optical information processing, OCOIP 2024

作者： Hu, Tianhao Zhou, Yong Dai, Lu Chu, Jun Zhang, Lei Gao, Weiqing Feicui Road 420 Hefei230601 China School of Physics Hefei University of Technology Feicui Road 420 Hefei230601 China

ISBN: (数字)9781510688995

ISBN: (纸本)9781510688988

Space division multiplexing (SDM) technology is a crucial method for enhancing the capacity of optical communication information transmission systems. In practical applications, there is an urgent need for stable and efficient SDM fiber amplifiers (SDMFAs), and helix side-pumping coupler (HSPC) serves as an effective solution. In this work, a 3D simulation model of the HSPC has been developed using the beam propagation method (BPM). The simulation results demonstrate excellent coupling efficiency and modal gain flatness between the pump fiber (PF) and the target fiber (TF). The maximum side-pumping efficiency of the double-clad fiber (DCF) is 96.20% and the differential modal gain (DMG) is less than 0.28 dB. In experiment, the maximum coupling efficiency achieved is 70.50% through tapered welding, with a DMG of less than 1.5 dB. © 2025 SPIE.

关键词： Beam propagation method

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