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Anisotropy-free arrayed waveguide gratings on X-cut thin film lithium niobate platform of in-plane anisotropy

Light(Science & Applications) 2024年第7期13卷 1416-1426页

作者： Junjie Yi Changjian Guo Ziliang Ruan Gengxin Chen Haiqiang Wei Liwang Lu Shengqi Gong Xiaofu Pan Xiaowan Shen xiaowei guan Daoxin Dai Kangping Zhong Liu Liu State Key Laboratory of Extreme Photonics and Instrumentation College of Optical Science and EngineeringInternational Research Center for Advanced PhotonicsZhejiang UniversityHangzhou 310058China. guangdong Provincial Key Laboratory of Optical Information Materials and Technology South China Academy of Advanced OptoelectronicsSouth China Normal UniversityHigher-Education Mega-CenterGuangzhou 510006China. National Center for International Research on Green Optoelectronics South China Normal UniversityGuangzhou 510006China Photonics Research Institute Department of Electrical and Electronic EngineeringThe Hong Kong Polytechnic UniversityHung HomKowloonHong Kong(SAR)China. Jiaxing Key Laboratory of Photonic Sensing&Intelligent Imaging Intelligent Optics&Photonics Research CenterJiaxing Research Institute Zhejiang UniversityJiaxing 314000China

Arrayed waveguide grating is a versatile and scalable integrated light dispersion device,which has been widely adopted in various applications,including,optical communications and optical ***,thin-film lithium niobate emerges as a promising photonic integration platform,due to its ability of shrinking largely the size of typical lithium niobate based optical *** would also enable multifunctional photonic integrated chips on a single lithium niobate ***,due to the intrinsic anisotropy of the material,to build an arrayed waveguide grating on X-cut thin-film lithium niobate has never been ***,a universal strategy to design anisotropyfree dispersive components on a uniaxial in-plane anisotropic photonic integration platform is introduced for the first *** leads to the first implementation of arrayed waveguide gratings on X-cut thin-film lithium niobate with various configurations and *** best insertion loss of 2.4 dB and crosstalk of−24.1 dB is obtained for the fabricated arrayed waveguide grating *** of such arrayed waveguide gratings as a wavelength router and in a wavelength-division multiplexed optical transmission system are also demonstrated.

关键词： waveguide arrayed lithium

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维特根斯坦语言哲学观照下的机器智能

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宁波教育学院学报 2024年第2期26卷 77-81页

作者：关晓薇郭姿菲大连理工大学外国语学院辽宁大连116024

在维特根斯坦语言哲学视域下,机器被定义为缺乏面相知觉能力的“面相盲人”和不具有意向性的“意义盲人”,由于机器无法具身化的参与到“语言游戏”中因而不存在思维。维特根斯坦强调机器只是在遵守一种机械式的程序,非语境化的机器智... 详细信息

在维特根斯坦语言哲学视域下,机器被定义为缺乏面相知觉能力的“面相盲人”和不具有意向性的“意义盲人”,由于机器无法具身化的参与到“语言游戏”中因而不存在思维。维特根斯坦强调机器只是在遵守一种机械式的程序,非语境化的机器智能只有回归了语言的实践才能够消解“遵守规则”这一悖论。同时机器翻译在“语言游戏”中也面临着语义困境,只有实现人工智能语境化的语义识别才能消除句法与语义的内生对立,解决语义歧义,输出带有自然属性的语义内容。维氏的语言哲学思想对指导具身机器智能科学的发展路径以及机器翻译机制的迭代方向有重要的认识论意义。

关键词：维特根斯坦语言哲学遵守规则机器智能机器翻译

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徐家围子断陷沙河子组主干断裂形成演化与地层剥蚀特征

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大庆石油地质与开发 2024年第2期43卷 30-38页

作者：贾文昊关晓巍张大智谢昭涵孙剑桥于振宇东北石油大学CNPC“断裂控藏”重点实验室黑龙江大庆163318 中国石油大庆油田有限责任公司勘探开发研究院黑龙江大庆163712 中国石油大庆油田有限责任公司第一采油厂黑龙江大庆163001

主干断裂的活动控制着徐家围子断陷沙河子组的建造与改造。为了明确断裂活动,运用位移距离曲线方法系统分析了徐家围子断陷主干断裂的生长活动特征,通过不整合面下的同向轴特征分析了徐家围子断陷沙河子组沉积末期的剥蚀改造作用。结果... 详细信息

主干断裂的活动控制着徐家围子断陷沙河子组的建造与改造。为了明确断裂活动,运用位移距离曲线方法系统分析了徐家围子断陷主干断裂的生长活动特征,通过不整合面下的同向轴特征分析了徐家围子断陷沙河子组沉积末期的剥蚀改造作用。结果表明:徐家围子断陷主干断裂分段特征明显,徐西断裂与宋西断裂在火石岭组沉积时期分别是数条分段的小断裂,在沙河子组沉积时期连通为整条断裂并持续控陷活动;徐中断裂在沙河子组沉积时期弱伸展弱控陷,在沙河子组沉积末期作为薄弱带发生压扭反转;徐东断裂带中的徐东正断层在沙河子组沉积时期弱控陷,徐东逆断层在营城组一段沉积末期的反转作用下形成;沙河子组沉积末期的反转作用对沙河子组厚度与构造格局产生明显改变,沿徐西断裂与宋西断裂存在较强的剥蚀,徐西断裂北端升平凸起尤为强烈,徐中断裂压扭反转产生一定的走滑分量并遭受剥蚀,徐东逆断层在营城组一段沉积末期的反转中形成,对沙河子组厚度无明显改变,但对徐东构造带构造格局产生明显影响。研究成果可为徐家围子断陷古构造恢复与进一步勘探提供理论参考。

关键词：徐家围子断陷沙河子组断裂活动剥蚀特征构造演化

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Energy-efficient integrated silicon optical phased array

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Frontiers of Optoelectronics 2023年第3期16卷 81-104页

作者： Huaqing Qiu Yong Liu Xiansong Meng xiaowei guan Yunhong Ding Hao Hu DTU Electro Department of Electrical and Photonics Engineering Technical University of Denmark Interuniversity Microelectronics Center (IMEC) Jiaxing Key Laboratory of Photonic Sensing and Intelligent Imaging Intelligent Optics and Photonics Research Center Jiaxing Research Institute Zhejiang University

An optical phased array(OPA) is a promising non-mechanical technique for beam steering in solid-state light detection and ranging systems. The performance of the OPA largely depends on the phase shifter, which affects power consumption,insertion loss, modulation speed, and footprint. However, for a thermo-optic phase shifter, achieving good performance in all aspects is challenging due to trade-offs among these aspects. In this work, we propose and demonstrate two types of energy-efficient optical phase shifters that overcome these trade-offs and achieve a well-balanced performance in all ***, the proposed round-spiral phase shifter is robust in fabrication and fully compatible with deep ultraviolet(DUV)processes, making it an ideal building block for large-scale photonic integrated circuits(PICs). Using the high-performance phase shifter, we propose a periodic OPA with low power consumption, whose maximum electric power consumption within the field of view is only 0.33 W. Moreover, we designed Gaussian power distribution in both the azimuthal( φ) and polar( θ)directions and experimentally achieved a large sidelobe suppression ratio of 15.1 and 25 dB, respectively.

关键词： Optical phased array Optical phase shifter Silicon photonics Integrated optics

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检测智能加液装置的设计及研制

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山东纺织科技 2024年第1期65卷 26-29页

作者：姚静赖淦珠殷祥刚管小卫南京海关纺织工业产品检测中心无锡海关江苏无锡214101 无锡容川科技有限公司江苏无锡214000

为减少检测过程中的人工干预,实现加液的自动化,设计研发了检测智能加液装置,选取pH值、甲醛作为加液目标任务,构建加液装置的模型。从功能、精度、效率等方面进行分析,表明此加液装置符合检测要求,可部分替代实验室人工操作。

关键词：智能加液装置检测 pH值甲醛

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Cross-border E-commerce Dispute Settlement Mechanism: Review, Reflection and Construction

Cross-border E-commerce Dispute Settlement Mechanism: Review...

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作者： xiaowei guan guanghua Law School Zhejiang University

Global cross-border e-commerce is booming, and the development of the corresponding dispute settlement system is also attracting attention, especially the large-scale application of ODR（Online Dispute Resolution）. However, the existing dispute settlement mechanism still cannot fully meet the needs of various cross-border e-commerce disputes, and many problems need to be resolved urgently. Through in-depth analysis of the evolution of the cross-border e-commerce dispute settlement mechanism path, it is found that the evolution of different types of dispute settlement paths presents different degrees of endogenous mechanisms and the integration of exogenous mechanisms with the overall social system. Path evolution provides a useful reference for future institutional construction. From the perspective of global governance, China’s construction of the cross-border e-commerce dispute settlement mechanism is crucial. Based on the review and reflection on the development of e-commerce dispute settlement, it provides suggestions for the construction of cross-border e-commerce dispute settlement mechanism.

关键词： Cross-border e-commerce Dispute settlement China path

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The Application of Online Machine Translation System in Translation Teaching

The Application of Online Machine Translation System in Tran...

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2011 2nd International Conference on Education and Educational Technology (EET 2011)

作者： xiaowei guan School of Foreign Languages Dalian University of Technology

Machine translation(MT) technology has developed for many decades and can provide high quality reference translation for certain fields. The main MT methods, on-line MT systems and their defects are introduced by analyzing the necessity of combing modern information technology with translation teaching. The application of the online MT systems in translation teaching is discussed in the aspect of the objectives and patterns. To apply computer-aided techniques into translation teaching will promote the reform of translation teaching and meet the social requirements for the training of translators.

关键词： Online machine translation system,translation teaching,the application of machine translation

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Challenges to Women University Graduates in Employment and Countermeasures

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The Journal of Human Rights 2010年第3期9卷 20-23页

作者： XIAN KAILIN & guan xiaowei Northeast China Economic and Financial University political science of the College of Arts and Science of the university

The essence of equal rights to employment on the part of women university and junior college graduates is the right to indiscrimination. It has become more and more difficult for university and junior college graduate... 详细信息

关键词： Challenges to Women University Graduates in Employment and Countermeasures than

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Silicon hybrid nanoplasmonics for ultra-dense photonic integration

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Frontiers of Optoelectronics 2014年第3期7卷 300-319页

作者： xiaowei guan Hao WU Daoxin DAI State Key Laboratory for Modem Optical Instrumentation Centre for Optical and Electromagnetic Research Zhejiang Provincial Key Laboratory for Sensing Technologies Zhejiang University Hangzhou 310058 China

Recently hybrid plasmonic waveguides have been becoming very attractive as a promising candidate to realize next-generation ultra-dense photonic integrated circuits because of the ability to achieve nano-scale confinement of light and relatively long propagation distance. Furthermore, hybrid plasmonic waveguides also offer a platform to merge photonics and electronics so that one can realize ultra-small optoelectronic integrated circuits （OEICs） for high-speed signal generation, processing as well as detection. In this paper, we gave a review for the progresses on various hybrid plasmonic wave- guides as well as ultrasmall functionality devices developed recently.

关键词： plasmonics hybrid silicon nanowire integration

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Bidirectional high sidelobe suppression silicon optical phased array

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Photonics Research 2023年第4期11卷 659-668页

作者： HUAQING QIU YONG LIU XIANSONG MENG xiaowei guan YUNHONG DING HAO HU DTU Electro Department of Electrical and Photonics EngineeringTechnical University of DenmarkDK-2800 Kgs.LyngbyDenmark Jiaxing Key Laboratory of Photonic Sensing&Intelligent Imaging Jiaxing 314000China Intelligent Optics&Photonics Research Center Jiaxing Research Institute Zhejiang UniversityJiaxing 314000China

An optical phased array(OPA),the most promising non-mechanical beam steering technique,has great potential for solid-state light detection and ranging systems,holographic imaging,and free-space optical communications.A high quality beam with low sidelobes is crucial for long-distance free-space transmission and ***,most previously reported OPAs suffer from high sidelobe levels,and few efforts are devoted to reducing sidelobe levels in both azimuthal(φ)and polar(θ)*** solve this issue,we propose a Y-splitter-assisted cascaded coupling scheme to realize Gaussian power distribution in the azimuthal direction,which overcomes the bottleneck in the conventional cascaded coupling scheme and significantly increases the sidelobe suppression ratio(SLSR)in theφdirection from 20 to 66 dB in theory for a 120-channel ***,we designed an apodized grating emitter to realize Gaussian power distribution in the polar direction to increase the *** on both designs,we experimentally demonstrated a 120-channel OPA with dual-Gaussian power distribution in bothφandθ*** SLSRs inφandθdirections are measured to be 15.1 d B and 25 dB,***,we steer the beam to the maximum field of view of 25°×13.2°with a periodic 2λpitch(3.1μm).The maximum total power consumption is only 0.332 W with a thermo-optic efficiency of 2.7 m W∕π.

关键词： sidelobe optical directions

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