1、19 Optimization of long-period grating inscribed in large mode area photonic crystal fiber for design of bandstop filter Original Research ArticleOptik - International Journal for Light and Electron Optics, Volume 122, Issue 1, January 2011, Pages 58-62Faramarz E. Seraji, S. Farsinezhad, Leila Chehr
2、eghani AnzabiClose preview | Related articles | Related reference work articles Abstract | Figures/Tables | References AbstractBy inscribing long period grating (LPG) in a photonic crystal fiber (PCF), optical filters for communication wavelengths can be fabricated. In this paper, by utilizing coupl
3、ed-mode theory and enhanced improved vectorial effective index method, a design of bandstop filter based on optimal LPG parameters is presented where the optimized full-width half-maximum (FWHM), the number (N) and total length of gratings of LPGs (L) are determined. As a result, by the determinatio
4、n of optimized LPG parameters with an optimum length of Lopt=6.5 mm and optimum number of grating Nopt=27 inscribed in the PCF, a bandstop optical filter with FWHM=1 nm is designed.Article Outline1. Introduction2. Determination of grating period3. Transmission response of stopband filter4. Conclusio
5、nAcknowledgementsReferencesPurchase20 Efficient multi-hop scheduling algorithms for packet transmissions in WDM optical star networks Original Research ArticleAEU - International Journal of Electronics and Communications, Volume 64, Issue 12, December 2010, Pages 1186-1191Hann-Jang HoClose preview |
6、 Related articles | Related reference work articles Abstract | Figures/Tables | References AbstractThis paper proposes multi-hop scheduling algorithms for the All-to-All Broadcast (AAB) problem in Wavelength Division Multiplexed (WDM) optical star networks. The multi-hop AAB problem can be split int
7、o two subproblems: Logical Topologies Construction (LTC) problem, and Transmission Scheduling (TS) problem. For improving the efficiency of multi-hop scheduling, we focus on a new multi-hop transmission model and transfer the LTC problem to a special case of the Round Robin Tournament (RRT) problem.
8、 In the proposed logical topologies, our multi-hop scheduling algorithms can easily overlap the tuning latency and reduce the number of tuning operations on each node. We compare our results with previous research in terms of schedule length. Overall results indicate that our multi-hop scheduling al
9、gorithms have better performance than previous algorithms.Article Outline1. Introduction2. Problem definition3. Logical topologies construction 3.1. Solving the -LTC problem3.2. Transfer to the round robin tournament (RRT) problem3.3. Logical topologies construction algorithms PurchaseLTC-Even algor
10、ithm LTC-Odd algorithm4. Packet transmission scheduling Transmission scheduling (TS) algorithmOverlapped transmission scheduling (OTS) algorithm5. ConclusionAcknowledgementsReferencesVitae21 VCSEL transmission at 10 Gb/s for 20 km single mode fiber WDM-PON without dispersion compensation or injectio
11、n locking Original Research ArticleOptical Fiber Technology, Volume 17, Issue 1, January 2011, Pages 41-45T.B. Gibbon, K. Prince, T.T. Pham, A. Tatarczak, C. Neumeyr, E. Rnneberg, M. Ortsiefer, I. Tafur MonroyClose preview | Related articles | Related reference work articles Abstract | Figures/Table
12、s | References AbstractVertical Cavity Surface Emitting Lasers (VCSELs) are extremely cost effective, energy efficient optical sources ideal for passive optical access networks. However, wavelength chirp and chromatic dispersion severely limit VCSEL performance at bit rates of 10 Gb/s and above. We
13、experimentally show how off-center wavelength filtering of the VCSEL spectrum at an array waveguide grating can be used to mitigate the effect of chirp and the dispersion penalty. Transmission at 10 Gb/s VCSEL over 23.6 km of single mode fiber is experimentally demonstrated, with a dispersion penalt
14、y of only 2.9 dB. Simulated results are also presented which show that off-center wavelength filtering can extend the 10 Gb/s network reach from 11.7 km to 25.8 km for a 4 dB dispersion penalty. This allows for cheap and simple dispersion mitigation Purchasein next generation VCSEL-based optical acc
15、ess networks.Article Outline1. Introduction2. Experimental setup3. VCSEL characterization4. Dispersion mitigation results5. SummaryAcknowledgementsReferences22 Ant colony optimization for dynamic routing and wavelength assignment in WDM networks with sparse wavelength conversion Original Research Ar
16、ticleEngineering Applications of Artificial Intelligence, Volume 24, Issue 2, March 2011, Pages 295-305Ming-Tsung Chen, Bertrand M.T. Lin, Shian-Shyong TsengClose preview | Related articles | Related reference work articles Abstract | Figures/Tables | References AbstractSince optical WDM networks ar
17、e becoming one of the alternatives for building up backbones, dynamic routing, and wavelength assignment with delay constraints (DRWA-DC) in WDM networks with sparse wavelength conversions is important for a communication model to route requests subject to delay bounds. Since the NP-hard minimum Ste
18、iner tree problem can be reduced to the DRWA-DC problem, it is very unlikely to derive optimal solutions in a reasonable time for the DRWA-DC problem. In this paper, we circumvent to apply a meta-heuristic based upon the ant colony optimization (ACO) approach to produce approximate solutions in a ti
19、mely manner. In the literature, the ACO approach has been successfully applied to several well-known combinatorial Purchaseoptimization problems whose solutions might be in the form of paths on the associated graphs. The ACO algorithm proposed in this paper incorporates several new features so as to
20、 select wavelength links for which the communication cost and the transmission delay of routing the request can be minimized as much as possible subject to the specified delay bound. Computational experiments are designed and conducted to study the performance of the proposed algorithm. Comparing wi
21、th the optimal solutions found by an ILP formulation, numerical results evince that the ACO algorithm is effective and robust in providing quality approximate solutions to the DRWA-DC problem.Article Outline1. Introduction2. Problem formulation3. ACO design for DRWA-DC 3.1. Initialization of ACO3.2.
22、 State transition rule3.3. Pheromone updating rule3.4. Stopping criterion4. Computational experiments 4.1. Introduction of transmission delays to the ILP formulation4.2. Comparisons between the ACO and the ILP formulation4.3. Comparisons of iterations5. ConclusionsReferences23 Theory-inspired develo
23、pment of new nonlinear optical materials and their integration into silicon photonic circuits and devices Original Research ArticleOptical Materials, Volume 32, Issue 6, April 2010, Pages 658-668PurchaseLarry R. Dalton, David Lao, Benjamin C. Olbricht, Stephanie Benight, Denise H. Bale, Joshua A. Da
24、vies, Todd Ewy, Scott R. Hammond, Philip A. SullivanShow preview | Related articles | Related reference work articles 24 Talent Management and HRM in Multinational companies in Beijing: Definitions, differences and drivers Original Research ArticleJournal of World Business, Volume 45, Issue 2, April
25、 2010, Pages 179-189Paul Iles, Xin Chuai, David PreeceShow preview | Related articles | Related reference work articles Purchase25Improving the performance of a photonic crystal ring-resonator-based channel drop filter using particle swarm optimization method Original Research ArticleOptics Communic
26、ations, Volume 283, Issue 20, 15 October 2010, Pages 4099-4103Behnam Saghirzadeh Darki, Nosrat GranpayehShow preview | Related articles | Related reference work articles Purchase7,895 articles found for: pub-date 2009 and tak(Talents into) or cost or basic or technology or research or development or
27、 maintain or innovation or optimization or company or processes or continue or advance or toward or goal or luck) and (CWDM or DWDM or Expert or communications or optical or module or technology or company or telecommunications or network or equipment) and (doctorate or active or passive or “electro
28、-optical“ or industry or internationally or renowned or professional or research or development ASP.NET 服务器控件的数据绑定组件的开发通过整合 ERP 信息系统完善信用机制的探讨“综合信息服务”时代 电信运营商如何运营管理基于 Web 服务和 WF 的工作流管理信息系统应用研究运用 SharePoint 门户技术提升信息管理水平个人诊所药房管理信息系统的设计与实现信息管理与信息系统专业实践教学改革探讨多能源发电微网实验平台及其能量管理信息集成浅议现代信息技术的发展与管理会计学生宿舍信息管理系统的需求及功能提高高校教育教学管理信息化水平的策略思考服务于城市规划管理的遥感信息平台技术研究信息系统工程监理中的档案管理研究医院信息系统护士工作站的运行管理信息时代网络舆论监督领导干部机制发展研究医学信息管理专业数据库原理及应用课程的教学实践与思考浅议建设工程项目的信息化管理信息追溯在建筑安全管理中的应用建筑安全管理经济学分析
