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Wavelength-Tunable Rectangular Pulse Dissipative Soliton Operation of an Erbium-Doped Mode-Locked Fiber Laser

Chinese Physics Letters 2014年第4期31卷 68-71页

作者： HU Xue-Juan GUO Chun-Yu RUAN Shuang-Chen Shenzhen Key Laboratory of Laser Engineering Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes College of Electronic Science and Technology Shenzhen University Shenzhen 518060

The wavelength-tunable rectangular pulse dissipative soliton （DS） is experimentally demonstrated, for the first time to the best of our knowledge, in an erbium-doped figure-of-eight fiber laser based on the nonlinear amplifying loop mirror mode-locked technique. The proposed rectangular pulse DS fiber laser can operate in the wavelength- tunable mode-locked state from 1573.5nm to 159d.6 nm with the rotation of the polarization controllers. The achieved output wavelengths are 1573.5nm, 1576.3nm, 1586.8nm, 1590.4nm and 1594.6nm, respectively. The pulse widths of the rectangular pulse can also be tuned from ~8ns to ~24ns by adjusting the pump power. The fundamental repetition rate of the rectangular pulse DS is 1.154 MHz and the output power is 6.1d m W （at 1594.6 nm）.

关键词： WAVELENGTHS SOLITONS FIBER lasers MODE-locked lasers GAUSSIAN function

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Tm^3＋-doped Ga2O3-GeO2-Bi2O3-PbO（PbF2） Glasses for 1.47-μm optical Amplifications

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Chinese Physics Letters 2006年第2期23卷 478-481页

作者：石冬梅张勤远杨钢锋刘粤惠姜中宏 Key Laboratory of Special Functional Materials and Advanced Manufacturing Technology (Ministry of Education) Institute of Optical Communication Materials South China University of Technology Guangzhou 510640

We report the spectroscopic properties and thermal stability of Tm^3＋-doped Ga2O3-GeO2-Bi2O3-PbO（PbF2） glasses for 1.47-μm optical amplifications. Effects of PbF2 doping on the optical properties and thermal stability of Tm^3＋ -doped gallate-germanium-bismuth-lead glass are inestigated. The measured peak wavelength and full width at half-maximum of the fluorescence are 1465nm and - 120 nm, respectively： Siguificant enhancement of the 1.47-μm emission and the lifetime of a a^3H4 level with increasing PbF2 doping have been observed. The presence of GeO2 provides two potentials of increasing the thermal stability and shortening the ultraviolet cutoff band of host glasses.

关键词： METAL OXIDE GLASSES RARE-EARTH IONS TELLURITE GLASS TM-3+ IONS INTENSITIES AMPLIFIER SPECTRA

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Pearson and Intra-inter-class Weighted Block Diagonal Representation Learning for Subspace Clustering

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Expert systems with Applications 2025年

作者： Xuemei Zhao Yusong Xiong Chen Li Jun Wu Qi Zhang Haijian Wang School of Electronic Engineering and Automation Guilin University of Electronic Technology Guilin China Guangxi Key Laboratory of Manufacturing System & Advanced Manufacturing Technology School of Mechanical & Electrical Engineering Guilin University of Electronic Technology Guilin China

Block diagonal is an important characteristic of the self-expression coefficient matrix in subspace clustering. However, the global constraint on the self-expression coefficient matrix suffers from the impact of inter-class similarity and the intra-class dissimilarity, as well as the disturbance of noise. To facilitate subspace clustering by enhancing the representation ability of the self-expression coefficient matrix, we propose an enhanced block diagonal representation(BDR) learning that considers internal and external data correlations from the perspectives of pairwise and classwise correlation. First, Pearson correlation is employed to describe local pairwise similarities and acts as a weight to strengthen the corresponding connections between pairwise data points in the self-expression coefficient matrix. Then, a unified intra-class and inter-class dissimilarity constraint is proposed to increase the coefficient values of the same class and decrease the coefficient values of different classes, in other words, enhance intra-class compactness and inter-class separability at the classwise level. In this way, a multi-level constraint on the self-expression coefficient matrix is proposed, from pairwise to classwise along with the global-wise BDR constraint. Experimental results show that the block diagonal structure of the self-expression coefficient matrix is significantly improved with these two additional constraints. Further, with the enhanced self-expression coefficient matrix, the accuracies of the clustering results are also improved.

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Diffusion mechanism simulation of cloud manufacturing complex network based on cooperative game theory

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Journal of systems Engineering and Electronics 2018年第2期29卷 321-335页

作者： GENG Chao QU Shiyou XIAO Yingying WANG Mei SHI Guoqiang LIN Tingyu XUE Junjie JIA Zhengxuan Economics and Management School Harbin Institute of Technology at Weihai Beijing Complex Product Advanced Manufacturing Engineering Research Center Beijing Simulation Center State Key Laboratory of Intelligent Manufacturing System Technology Beijing Institute of Electronic System Engineering Science and Technology on Space System Simulation Laboratory Beijing Simulation Center

Cloud manufacturing is a specific implementation form of the "Internet + manufacturing" strategy. Why and how to develop cloud manufacturing platform(CMP), however, remains the key concern of both platform operators and users. A microscopic model is proposed to investigate advantages and diffusion forces of CMP through exploration of its diffusion process and mechanism. Specifically, a three-stage basic evolution process of CMP is innovatively proposed. Then, based on this basic process, a more complex CMP evolution model has been established in virtue of complex network theory, with five diffusion forces identified. Thereafter, simulations on CMP diffusion have been conducted. The results indicate that, CMP possesses better resource utilization,user satisfaction, and enterprise utility. Results of simulation on impacts of different diffusion forces show that both the time required for CMP to reach an equilibrium state and the final network size are affected simultaneously by the five diffusion forces. All these analyses indicate that CMP could create an open online cooperation environment and turns out to be an effective implementation of the "Internet + manufacturing" strategy.

关键词： complex network cloud manufacturing innovation diffusion network effect Gale-Shapley algorithm cooperative game theory

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Third-order aberration analysis of tilted-pupil optical systems

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Chinese Physics B 2014年第1期23卷 234-238页

作者：王钰张新王灵杰王超 Key Laboratory of Optical System Advanced Manufacturing Technology Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 China University of Chinese Academy of Sciences Beijing 100049 China

The aberration field of an optical system with a tilted pupil is explored through expanding the vector expressions of the third-order wavefront aberrations. First, the vector forms of the wavefront aberrations are modified to obtain the aberration expressions with the pupil tilted; full field displays of coma and astigmatism in this situation are given. Then, the third-order aberration formulas with the pupil decentered and tilted simultaneously are derived and discussed. Finally, an example is taken to certify the validity of aberration distribution properties.

关键词： vector aberration formula expansion tilted pupil imaging system

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Scaling all-fiber mid-infrared supercontinuum up to 10 W-level based on thermal-spliced silica fiber and ZBLAN fiber

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Photonics Research 2016年第4期4卷 135-139页

作者： Zhijian Zheng Deqin Ouyang Junqing Zhao Minqiu Liu Shuangchen Ruan Peiguang Yan Jinzhang Wang Shenzhen Key Laboratory of Laser Engineering Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes College of Optoelectronic Engineering Shenzhen University

We demonstrate an integrated all-fiber mid-infrared(mid-IR)supercontinuum(SC)source generated by a 1.95μm master oscillator power amplifier system and a single-mode ZBLAN(ZrF_4–BaF_2–LaF_3–AlF_3–NaF)*** maximum average output power is 10.67 W with spectral bandwidth covering from～1.9 to 4.1μ*** single-mode ZBLAN fiber and silica fiber are thermal-spliced to enhance the robustness and practicability of the *** is,to the best of our knowledge,the first high-power integrated compacted all-fiber mid-IR SC source based on thermal-spliced silica fiber and ZBLAN fiber.

关键词： IR SC mode Scaling all-fiber mid-infrared supercontinuum up to 10 W-level based on thermal-spliced silica fiber and ZBLAN fiber high MFA LMA TDF

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Tighter regional regulation needed of power grids

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IEEE SPECTRUM 2003年第10期40卷 12-+页

作者： [Anonymous] Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes College of Electronic Science and Technology Shenzhen University Shenzhen China

Not infrequently, major breakdowns of human systems, or natural disasters aggravated by patterns of human activity, give rise to heated debate about causes and implications that just go on and on. Yet this has not been the case with the blackout that darkened cities from New York to Detroit and Toronto. What is striking here is the similarity of the diagnoses and the cures put forth by the qualified groups that have weighed in with well-formulated opinions so far. What all the facts suggest to well-informed observers is that the country's system of regional grid regulation urgently needs attention.

关键词： Power grids NASA Humans Regulators Safety Electric breakdown Inductors Cities and towns Power transmission lines Alarm systems

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Ethernet-based Mass Volume Train Security Detection Network

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Journal of Engineering Science and technology Review 2013年第2期6卷 90-94页

作者： He, D.Q. Zhong, X.F. Ren, C.H. Xu, L.F. Guangxi Key Laboratory of Manufacturing System and Advanced Manufacturing Technology Department of Mechanical Engineering Guangxi University Guangxi Nanning 530004 China

As the existing train communication network transmission rate is low, large capacity status and fault diagnosis data, the event log data, passenger information which are stored in different vehicles equipments, it is difficult to realize fault diagnosis and intelligent maintenance efficiently and timely. Based on the train level and vehicle level Ethernet network, this paper will focus on network construction technology and real-time performance of mass volume onboard security detection network. The research results will improve control and network function of train. © 2013 Kavala Institute of technology.

关键词： Fault detection

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Microcavity electrodynamics of hybrid surface plasmon polariton modes in highquality multilayer trench gratings

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Light(Science & Applications) 2018年第1期7卷 844-853页

作者： Xiaoyi Liu Jinbo Gao Jinsong Gao Haigui Yang Xiaoyi Wang Tongtong Wang Zhenfeng Shen Zhen Liu Hai Liu Jian Zhang Zizheng Li Yanchao Wang Qiang Li Key Laboratory of Optical System Advanced Manufacturing Technology Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033China University of the Chinese Academy of Sciences Beijing 100039China

In common plasmonic structures,absorption and radiation losses are often mutually restricted and can seriously influence the device *** current study presents a compound structure composed of multilayer grating stripes and multilayer shallow trenches.A small depth was adopted for the trench configuration to exclude the extra bend *** two sections supported Fabry–Perot resonance and cavity modes,respectively,with hybrid modes formed through *** addition,the total loss for the entire framework was clearly reduced due to the introduction of the trench geometry,indicating that both absorption and radiation losses were successfully taken into consideration in the compound ***,such a low loss realized by the hybridization of surface plasmon polariton modes has rarely been seen ***,the debatable relationship between the total and partial quality factors was described for the first time based on a hybrid mode analysis to establish a new approach to investigate the different resonance *** the detailed calculation process,the relative electric field intensity was first adopted to stipulate the effective areas for the various modes,which is more reasonable than using the common definition that is based on a unit *** multilayer trench grating exhibited a relatively low loss without weakening energy localization,which is significant in the design of plasmonic devices.

关键词： trench multilayer cavity

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Polymer Photovoltaic Cells Based on Ultraviolet-Ozone-Treated Vanadium-Doped Indium Oxide Anodes

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Chinese Physics Letters 2012年第8期29卷 297-300页

作者： GUO Xiao-Yang LUO Jin-Song CHEN Hong LIU Xing-Yuan State Key Laboratory of Luminescence and Applications Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033 Key Laboratory of Optical System Advanced Manufacturing Technology Changchun Institute of OpticsFine Mechanics and PhysicsChinese Academy of SciencesChangchun 130033

Polymer photovoltaic(PV)cells based on UV-ozone(UVO)-treated indium vanadium oxide(IVO)anodes are *** performance of cells with UVO-treated IVO film anodes without interfacial layers was significantly improved compared with those containing untreated IVO *** origin of the enhancement is investigated by atomic force microscopy and photoelectron spectroscopy *** results demonstrate that UVO treatment can smooth the IVO surface,and increase the work function of IVO films due to the removal of carbon contamination and a dipole resulting from a surface rich in negatively charged ***-treated IVO films are potential electrode materials for polymer PV cells.

关键词： Polymer vanadium dipole

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