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硅光调制器与单模光纤高效耦合技术研究

open access: yesGuangtongxin yanjiu, 2021
针对硅光芯片在应用中由于其模场较小存在耦合损耗较大的问题,文章利用一款硅光调制器芯片对其与单模光纤的耦合效率进行了研究。首先对模场匹配理论进行了分析,随后对硅光芯片以及耦合用的单模光纤进行了模场测试,提出了一种提高耦合效率的低成本耦合方式。实验结果表明,该单模光纤与硅光芯片的耦合效率达到70%。利用该方案制作了光组件并进行了四阶脉冲幅度调制(PAM4)眼图测试,得到了较好的眼图。
谭忠祥   +5 more
doaj  

耦合地线在10kV架空线路中的应用研究

open access: yesGaoya dianqi, 2022
10 kV架空线路雷击跳闸率高,适用的防雷措施少。相比于架空地线,加装耦合地线的方法具有更好的适用性。文中分析了耦合地线在10 kV架空线路中的防雷机理、安装方式和适用性,认为在现有杆塔和线型条件下应仅加装1根耦合地线。利用ATP-EMTP分别搭建了单回三角形排列和双回直线排列方式的模型,分析了在直击雷和感应雷的作用下,耦合地线对10 kV架空裸导线和绝缘导线耐雷水平的影响。结果表明,对于裸导线,安装耦合地线后的反击耐雷水平和感应雷耐雷水平可提高36.2%~86.3%,雷击导线的耐雷水平可提高4%~13.
杨鑫   +5 more
doaj  

屏蔽线和三相线空间结构变化对雷击耦合电压的影响

open access: yesDianci bileiqi, 2021
基于多导线的Agrawal场-线耦合模型,采用"两步走"方法,从理论层面研究了屏蔽线和三相线路的空间结构变化对耦合电压峰值的影响。笔者从两个方面进行讨论:1)屏蔽线的高度对耦合电压的影响,其他条件不变,发现屏蔽线越高,相线受到的屏蔽效应呈现先增大后减小的趋势。线路结构两边的两根相线在屏蔽线高度为17.05 m时,屏蔽效应达到最大;但对中间的一根相线而言,屏蔽线高度为12.05 m时,屏蔽效应最大。2)保持屏蔽线和三相线的高度不变,通过改变三相线的水平距离(屏蔽线的水平间距也随之改变 ...
宁欣婷   +4 more
doaj  

三峡库区春玉米水肥耦合效应研究

open access: yesShuitu Baochi Xuebao, 2005
三峡库区春玉米盆栽水肥耦合试验研究结果表明,水分胁迫导致玉米株高和叶面积指数降低,以拔节期受到影响最大;玉米产量与生物量呈显著正相关关系,产量与根重无显著正相关关系;水氮耦合效应显著,适宜水分和中氮处理下玉米的产量最高,玉米生长发育对氮肥的吸收存在一定的阈值,过多施用氮肥会加剧土壤干旱和作物干旱,水和钾耦合效应对玉米产量影响不显著;水分是影响玉米产量的主导因素,其次是氮效应和钾效应。
吕刚 史东梅
doaj   +2 more sources

Inverse Thermal Softening Behavior in a High‐Entropy Alloy Under Various Strain Rates

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Although face‐centered cubic high‐entropy alloys (HEAs) have received extensive attention and in‐depth research, most existing studies focus on single temperature or strain rate conditions, lacking systematic investigations into deformation mechanisms under extreme thermomechanical coupling environments.
Zhi Wang   +6 more
wiley   +1 more source

微生物燃料电池耦合型废水处理反应器研究进展

open access: yesGongye shui chuli, 2016
随着生物电化学技术研究的发展,多种应用于废水处理的新型微生物燃料电池(MFC)耦合反应器不断出现,在污染物降解和能量回收中展现了多种优势。重点综述了近年来报道的典型的MFC耦合型废水处理反应器,并对其耦合机理、运行效果及存在的问题进行了比较分析,以期为生物电化学耦合型废水处理反应器的进一步优化和发展提供参考。
罗鸥, 杨永刚, 刘国光, 许玫英
doaj   +2 more sources

Ultrasonic Vibration Assisted Laser Processing: A Hybrid Paradigm for Extreme Surface Enhancement

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Traditional laser processing techniques offer many advantages, but they often encounter limitations such as heat‐affected zones, recast layers, residual tensile stresses, and poor surface finish. The integration of ultrasonic vibration (UV) presents a promising hybrid approach to overcome these challenges by introducing beneficial effects like
Aziz Ul Hassan Mohsan   +6 more
wiley   +1 more source

Bidirectional Interfacial Chemical Regulation Enables Durable Aqueous Zn‐I2 Batteries

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Aqueous Zn‐I2 batteries hold great promise for large‐scale energy storage, yet their practical deployment is hindered by coupled interfacial instabilities at both electrodes, where Zn‐anode parasitic reactions and cathodic polyiodide shuttle mutually aggravate each other.
Zimian Jia   +8 more
wiley   +1 more source

Electron–Hole Dual Cocatalyst Promoted ZnIn2S4 for Photocatalytic H2 Evolution Coupled With Benzyl Alcohol Oxidation

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT The central challenge in photocatalysis is to direct photogenerated electrons and holes toward the simultaneous and efficient production of hydrogen and value‐added chemicals. To address the pronounced charge recombination and sluggish surface kinetics of ZnIn2S4 nanoflowers, we construct a ternary photocatalyst synergistically decorated with ...
Xue Men, Haiou Liang, Man Zhang, Jie Bai
wiley   +1 more source

Coupled Mechano‐Chemical Pretreatment of Poplar Wood to Enhance Enzymatic Hydrolysis for Low‐Cost Biorefinery

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Common methods of lignocellulose pretreatment (such as acid method, alkali method, and organic solvent method) have been severely restricted in their development due to issues such as harsh reaction conditions, high cost of reagents, and heavy environmental burden.
Weirong Li   +9 more
wiley   +1 more source

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