检索结果-内蒙古大学图书馆

Silicon integrated microwave photonics

Science China(Information Sciences) 2025年第4期68卷 100-150页

作者： Yuansheng TAO Zihan TAO Le LI Yichen WU Bitao SHEN Yimeng WANG luwen xing Wencan LI Huajin CHANG Jingmei ZHANG Haowen SHU Ninghua ZHU xingjun WANG State Key Laboratory of Photonics and Communications School of Electronics Peking University Department of Electrical Engineering and State Key Laboratory of Terahertz and Millimeter Waves City University of Hong Kong Institute of Intelligent Photonics Nankai University Peking University Yangtze Delta Institute of Optoelectronics Frontiers Science Center for Nano-optoelectronics Peking University

The generation, processing, and measurement of microwave signals using optoelectronic technology on compact chips represent a significant trend in the evolution of microwave photonics(MWP). Among various platforms, silicon photonics has emerged as a leading choice, primarily due to its compatibility with established complementary metal-oxidesemiconductor(CMOS) processes. This compatibility enables the complete integration of high-performance radio frequency(RF) links while addressing key challenges such as size, power consumption, cost, and reliability. In this article, we review recent advancements in silicon-integrated microwave photonics, focusing on the developments of device-level integration and system-level applications. At the device level, we highlight critical innovations in silicon-based passive and active components towards MWP concerns, including ultralow-loss waveguides, high-fitness micro rings, large-bandwidth/high-linearity electro-optic modulators, hybrid/heterogeneous integrated lasers and amplifiers on silicon, frequency combs, and more. These breakthroughs form the basic foundation for advancing MWP system-level implementation. At the system-level applications,we concentrate on integrated MWP systems with diverse functionalities on silicon chips, including microwave signal generation, processing, programmable circuits, and measurement systems. Finally, we discuss current challenges and provide insights into the future of silicon-integrated MWP.

关键词： silicon photonics microwave photonics broadband signal processing hybrid integration

来源：评论

学校读者我要写书评

暂无评论

Versatile photonic molecule switch in multimode microresonators

引用

Light(Science & Applications) 2024年第3期13卷 498-509页

作者： Zihan Tao Bitao Shen Wencan Li luwen xing Haoyu Wang Yichen Wu Yuansheng Tao Yan Zhou Yandong He Chao Peng Haowen Shu xingjun Wang State Key Laboratory of Advanced Optical Communications System and Networks School of ElectronicsPeking UniversityBeijing 100871China College of Engineering Peking UniversityBeijing 100871China School of Integrated Circuits Peking University100871 BejingChina Peking University Yangtze Delta Institute of Optoelectronics Nantong 226010China Frontiers Science Center for Nano-optoelectronics Peking UniversityBeijing 100871China Peng Cheng Laboratory Shenzhen 518055China

Harnessing optical supermode interaction to construct artificial photonic molecules has uncovered a series of fundamental optical phenomena analogous to atomic ***,the distinct energy levels and interactions in such two-level systems were provided by coupled *** reconfigurability is limited,as they often require delicate external field stimuli or mechanically altering the geometric *** highly specific approaches also limit potential ***,we propose a versatile on-chip photonic molecule in a multimode microring,utilizing a flexible regulation methodology to dynamically control the existence and interaction strength of spatial *** transition between single/multi-mode states enables the“switched-off/on”functionality of the photonic molecule,supporting wider generalized applications *** particular,“switched-on”state shows flexible and multidimensional mode splitting control in aspects of both coupling strength and phase difference,equivalent to the *** *** effect.“Switched-off”state allows for perfect low-loss single-mode transition(Qi~10 million)under an ultra-compact bend size(FSR~115 GHz)in a foundry-based silicon *** breaks the stereotyped image of the FSR-Q factor trade-off,enabling ultra-wideband and high-resolution millimeter-wave photonic *** demonstration provides a flexible and portable solution for the integrated photonic molecule system,extending its research scope from fundamental physics to real-world applications such as nonlinear optical signal processing and sixth-generation wireless communication.

关键词： switched multimode millimeter

来源：评论

学校读者我要写书评

暂无评论

A convenient and efficient 4-(diethylamino)-butylamine-lab ele d polarity-response-homodispersed strategy for absolute quantification of carboxyl submetabolome: Monitoring the whole progressive course of hepatocellular carcinoma

引用

JOURNAL OF CHROMATOGRAPHY A 2022年 1683卷 463504页

作者： Tong, Minghui Zhang, Qian Zhang, Yiwen xing, luwen Bi, Kaishun Li, Qing Shenyang Pharmaceut Univ Sch Pharm 103 Wenhua Rd Shenyang 110016 Peoples R China

Recent studies have shown that dysregulation of carboxyl submetabolome homeostasis is closely related to the occurrence and development of hepatocellular carcinoma (HCC). However, it is still a challenge to quantify carboxyl metabolites with high efficiency by conventional methods due to their species diver-sity and nature differences. Moreover, there are few studies on carboxyl submetabolome profiling during the whole progression of HCC. In this study, a convenient and efficient workflow for absolute quantifi-cation of carboxyl submetabolome was established based on the 4-(diethylamino)-butylamine (DEABA)-labeled polarity-response-homodispersed strategy. After optimizing derivation conditions with response surface methodology (RSM), the reaction only needed 1 min at room temperature, which radically sim-plified the labeling process. Compared with nonderivatization, the gaps of polarities and responses of the analytes were narrowed by DEABA labeling, realizing the polarity-response-homodispersion. Then reso-lution and sensitivity in HPLC-MS/MS were improved significantly. Ultimately, the workflow was applied to monitor carboxyl metabolic profile in human plasma of the whole progressive course of hepatocellular carcinoma. Combined with analysis of variance (ANOVA), orthogonal partial least squares discrimination analysis (OPLS-DA), Bayesian linear discriminant analysis (BLDA) and other data mining methods, the biomarkers of "health-hepatitis-cirrhosis-HCC" were screened out, and the diagnostic model was estab-lished. Furthermore, the relevancy between carboxyl submetabolome disorders and the pathogenesis of HCC was investigated. The developed method has the characteristics of high sensitivity, high coverage and high practicability, which is suitable for the study of biomarkers of carboxyl submetabolome in the whole progression of HCC. (c) 2022 Published by Elsevier B.V.

关键词： Carboxyl submetabolome Derivatization Hepatocellular carcinoma

来源：评论

学校读者我要写书评

暂无评论

Single-microresonator-based dynamic photonic molecule switch

Single-microresonator-based dynamic photonic molecule switch

引用

CLEO: Science and Innovations in CLEO 2024, CLEO: S and I 2024 - Part of Conference on Lasers and Electro-Optics

作者： Tao, Zihan Shen, Bitao Li, Wencan xing, luwen Wang, Haoyu Wu, Yichen Tao, Yuansheng Zhou, Yan He, Yandong Peng, Chao Shu, Haowen Wang, xingjun State Key Laboratory of Advanced Optical Communications System and Networks School of Electronics Peking University Beijing100871 China College of Engineering Peking University Beijing100871 China School of Integrated Circuits Peking University Bejing100871 China Peking University Yangtze Delta Institute of Optoelectronics Nantong226010 China Frontiers Science Center for Nano-optoelectronics Peking University Beijing100871 China Peng Cheng Laboratory Shenzhen518055 China

We propose a dynamic on-chip photonic molecule switch in an ultra-compact multimode silicon microring, allowing for flexible either nonlinear control or loss reduction. This strategy leads to a record low-loss transit... 详细信息

关键词： Molecules

来源：评论

学校读者我要写书评

暂无评论

Single-microresonator-based dynamic photonic molecule switch

Single-microresonator-based dynamic photonic molecule switch

引用

2024 Conference on Lasers and Electro-Optics, CLEO 2024

ISBN: (纸本)9781957171395

关键词： Photonic devices

来源：评论

学校读者我要写书评

暂无评论

Waveguide-integrated twisted bilayer graphene photodetectors (vol 15, 3688, 2024)

引用

NATURE COMMUNICATIONS 2024年第1期15卷 3688页

作者： Wu, Qinci Qian, Jun Wang, Yuechen xing, luwen Wei, Ziyi Gao, Xin Li, Yurui Liu, Zhongfan Liu, Hongtao Shu, Haowen Yin, Jianbo Wang, xingjun Peng, Hailin Peking University Center for Nanochemistry Beijing Science and Engineering Center for Nanocarbons Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Beijing P. R. China (GRID:grid.11135.37) (ISNI:0000 0001 2256 9319) Beijing Graphene Institute Beijing P. R. China (GRID:grid.510905.8) Peking University Center for Nanochemistry Beijing Science and Engineering Center for Nanocarbons Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Beijing P. R. China (GRID:grid.11135.37) (ISNI:0000 0001 2256 9319) Beijing Graphene Institute Beijing P. R. China (GRID:grid.510905.8) Peking University Academy for Advanced Interdisciplinary Studies Beijing P. R. China (GRID:grid.11135.37) (ISNI:0000 0001 2256 9319) Peking University State Key Laboratory of Advanced Optical Communications System and Networks School of Electronics Beijing P. R. China (GRID:grid.11135.37) (ISNI:0000 0001 2256 9319) Peking University School of Engineering Beijing P. R. China (GRID:grid.11135.37) (ISNI:0000 0001 2256 9319) Peking University State Key Laboratory of Advanced Optical Communications System and Networks School of Electronics Beijing P. R. China (GRID:grid.11135.37) (ISNI:0000 0001 2256 9319) Beijing Graphene Institute Beijing P. R. China (GRID:grid.510905.8) Peking University Academy for Advanced Interdisciplinary Studies Beijing P. R. China (GRID:grid.11135.37) (ISNI:0000 0001 2256 9319) Peking University Center for Nanochemistry Beijing Science and Engineering Center for Nanocarbons Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Beijing P. R. China (GRID:grid.11135.37) (ISNI:0000 0001 2256 9319) Beijing Graphene Institute Beijing P. R. China (GRID:grid.510905.8) Peking University Academy for Advanced Interdisciplinary Studies Beijing P. R. China (GRID:grid.11135.37) (ISNI:0000 0001 2256 9319) Peking University State Key Laboratory of Advanced Optical Com

Graphene photodetectors have exhibited high bandwidth and capability of being integrated with silicon photonics (SiPh), holding promise for future optical communication devices. However, they usually suffer from a low photoresponsivity due to weak optical absorption. In this work, we have implemented SiPh-integrated twisted bilayer graphene (tBLG) detectors and reported a responsivity of 0.65 A W–1 for telecom wavelength 1,550 nm. The high responsivity enables a 3-dB bandwidth of >65 GHz and a high data stream rate of 50 Gbit s–1. Such high responsivity is attributed to the enhanced optical absorption, which is facilitated by van Hove singularities in the band structure of high-mobility tBLG with 4.1o twist angle. The uniform performance of the fabricated photodetector arrays demonstrates a fascinating prospect of large-area tBLG as a material candidate for heterogeneous integration with ***-integrated graphene photodetectors exhibit promising bandwidths at telecom wavelengths, but their responsivity is usually limited. Here, the authors report the wafer-scale fabrication of waveguide-integrated detectors based on twisted bilayer graphene, showing responsivities up to 0.65 A/W and 3-dB bandwidths >65 GHz.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Multifunctional mixed analog/digital signal processor based on integrated photonics

引用

Opto-Electronic Science 2024年第8期3卷 1-12页

作者： Yichen Wu Qipeng Yang Bitao Shen Yuansheng Tao Xuguang Zhang Zihan Tao luwen xing Zhangfeng Ge Tiantian Li Bowen Bai Haowen Shu xingjun Wang State Key Laboratory of Advanced Optical Communication Systems and Networks School of ElectronicsPeking UniversityBeijing 100871China College of Engineering Peking UniversityBeijing 100871China Peking University Yangtze Delta Institute of Optoelectronics Nantong 226010China School of Electronic Engineering Xi’an University of Posts&TelecommunicationsXi’an 710121China Frontiers Science Center for Nano-optoelectronics Peking UniversityBeijing 100871China Peng Cheng Laboratory Shenzhen 518055China

Photonic signal processing offers a versatile and promising toolkit for contemporary scenarios ranging from digital optical communication to analog microwave *** to its electronic counterpart,it eliminates inherent bandwidth limitations and meanwhile exhibits the potential to provide unparalleled scalability and flexibility,particularly through integrated ***,by far the on-chip solutions for optical signal processing are often tailored to specific tasks,which lacks versatility across diverse ***,we propose a streamlined chip-level signal processing architecture that integrates different active and passive building blocks in silicon-on-insulator(SOI)platform with a compact and efficient *** and in-depth analyses for the architecture are conducted at levels of device,system,and *** by appropriate configuring schemes,the photonic circuitry supports loading and processing both analog and digital signals *** distinct tasks are facilitated with one single chip across several mainstream fields,spanning optical computing,microwave photonics,and optical ***,it has demonstrated competitive performance in functions like image processing,spectrum filtering,and electro-optical bandwidth *** high universality and a compact form factor,the proposed architecture is poised to be instrumental for next-generation functional fusion systems.

关键词： silicon photonics multifunctional signal process microwave photonics optical computing optical communica-tion equalization

来源：评论

学校读者我要写书评

暂无评论

Modulating electronic properties of GaP/WSe 2 Type-II heterojunction by applying of electric field and biaxial strain

引用

Physics Letters A 2025年 552卷

作者： luwen Tao Mengbo Wang xing Wei Yan Zhang Li Duan Junjie Wu Jibin Fan School of Materials Science and Engineering Chang’an University Xi’an 710064 PR China

This study investigated the characteristics of the geometric arrangement, electronic structure, and optical properties of GaP/WSe 2 heterojunction based on density functional theory (DFT). The results show that the GaP/WSe₂ heterojunction exhibits a typical type II band configuration, with an indirect bandgap of 1.364 eV. The bandgap of the GaP/WSe₂ heterojunction is decreased significantly compared to the GaP or WSe₂ monolayer, which facilitates efficient photogenerated electron excitation. The GaP/WSe₂ heterojunction exhibits strong absorption coefficients in the ultraviolet (UV) spectrum, and its optical properties can be precisely modulated by introducing biaxial strain. Furthermore, the transition from semiconductor states to metallic states in GaP/WSe₂ heterostructure can be precisely realized by tuning the external conditions, such as applying an external electric field or introducing a biaxial strain. All results demonstrated that GaP/WSe₂ heterojunction exhibits exceptional properties, making it an ideal promising candidate for the application in the next-generation optoelectronic devices.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Author Correction: Waveguide-integrated twisted bilayer graphene photodetectors

引用

Nature communications 2024年第1期15卷 5309页

作者： Qinci Wu Jun Qian Yuechen Wang luwen xing Ziyi Wei Xin Gao Yurui Li Zhongfan Liu Hongtao Liu Haowen Shu Jianbo Yin xingjun Wang Hailin Peng Center for Nanochemistry Beijing Science and Engineering Center for Nanocarbons Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Peking University 100871 Beijing P. R. China. Beijing Graphene Institute 100095 Beijing P. R. China. Academy for Advanced Interdisciplinary Studies Peking University 100871 Beijing P. R. China. State Key Laboratory of Advanced Optical Communications System and Networks School of Electronics Peking University 100871 Beijing P. R. China. School of Engineering Peking University 100871 Beijing P. R. China. Beijing Graphene Institute 100095 Beijing P. R. China. yinjb-cnc@***. Academy for Advanced Interdisciplinary Studies Peking University 100871 Beijing P. R. China. yinjb-cnc@***. State Key Laboratory of Advanced Optical Communications System and Networks School of Electronics Peking University 100871 Beijing P. R. China. yinjb-cnc@***. State Key Laboratory of Advanced Optical Communications System and Networks School of Electronics Peking University 100871 Beijing P. R. China. xjwang@***. Center for Nanochemistry Beijing Science and Engineering Center for Nanocarbons Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular Engineering Peking University 100871 Beijing P. R. China. hlpeng@***. Beijing Graphene Institute 100095 Beijing P. R. China. hlpeng@***. Academy for Advanced Interdisciplinary Studies Peking University 100871 Beijing P. R. China. hlpeng@***.

来源：评论

学校读者我要写书评

暂无评论

Adaptively Weighted k-Tuple Metric Network for Kinship Verification

引用

IEEE TRANSACTIONS ON CYBERNETICS 2023年第10期53卷 6173-6186页

作者： Huang, Sheng Lin, Jingkai Huangfu, luwen xing, Yun Hu, Junlin Zeng, Daniel Dajun Chongqing Univ Key Lab Dependable Serv Comp Cyber Phys Soc Minist Educ Chongqing 400044 Peoples R China Chongqing Univ Sch Big Data & Software Engn Chongqing 400044 Peoples R China San Diego State Univ Fowler Coll Business San Diego CA 92182 USA San Diego State Univ Ctr Human Dynam Mobile Age San Diego CA 92182 USA Beihang Univ Sch Software Beijing 100191 Peoples R China Chinese Acad Sci Inst Automat Beijing 100045 Peoples R China Univ Chinese Acad Sci Sch Econ & Management Beijing 100190 Peoples R China

Facial image-based kinship verification is a rapidly growing field in computer vision and biometrics. The key to determining whether a pair of facial images has a kin relation is to train a model that can enlarge the margin between the faces that have no kin relation while reducing the distance between faces that have a kin relation. Most existing approaches primarily exploit duplet (i.e., two input samples without cross pair) or triplet (i.e., single negative pair for each positive pair with low-order cross pair) information, omitting discriminative features from multiple negative pairs. These approaches suffer from weak generalizability, resulting in unsatisfactory performance. Inspired by human visual systems that incorporate both low-order and high-order cross-pair information from local and global perspectives, we propose to leverage high-order cross-pair features and develop a novel end-to-end deep learning model called the adaptively weighted k-tuple metric network (AWk-TMN). Our main contributions are three-fold. First, a novel cross-pair metric learning loss based on k-tuplet loss is introduced. It naturally captures both the low-order and high-order discriminative features from multiple negative pairs. Second, an adaptively weighted scheme is formulated to better highlight hard negative examples among multiple negative pairs, leading to enhanced performance. Third, the model utilizes multiple levels of convolutional features and jointly optimizes feature and metric learning to further exploit the low-order and high-order representational power. Extensive experimental results on three popular kinship verification datasets demonstrate the effectiveness of our proposed AWk-TMN approach compared with several state-of-the-art approaches. The source codes and models are released.1

关键词： Measurement Feature extraction Task analysis Faces Deep learning Convolutional neural networks Genetics Deep learning kinship verification metric learning relation network (RN) triplet loss

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：