以就业为导向的信息管理专业人才培养模式研究区域经济均衡发展对高校毕业生就业的影响及对策

1、19Optimization of long-period grating inscribed in large mode area photonic crystal fiber for design of bandstop filterOriginal Research ArticleOptik - International Journal for Light and Electron Optics, Volume 122, Issue 1, January 2011, Pages 58-62Faramarz E. Seraji, S. Farsinezhad, Leila Chehreg

2、hani AnzabiClose preview| Related articles|Related reference work articles AbstractAbstract | Figures/TablesFigures/Tables | ReferencesReferences AbstractBy inscribing long period grating (LPG) in a photonic crystal fiber (PCF), optical filters for communication wavelengths can be fabricated. In thi

3、s paper, by utilizing coupled-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

4、result, by the determination of optimized LPG parameters with an optimum length of Lopt=6.5mm and optimum number of grating Nopt=27 inscribed in the PCF, a bandstop optical filter with FWHM=1nm is designed.Article Outline1. Introduction2. Determination of grating period3. Transmission response of st

5、opband filter4. ConclusionAcknowledgementsReferencesPurchase20Efficient multi-hop scheduling algorithms for packet transmissions in WDM optical star networksOriginal Research ArticleAEU - International Journal of Electronics and Communications, Volume 64, Issue 12, December 2010, Pages 1186-1191Hann

6、-Jang HoClose preview| Related articles|Related reference work articles AbstractAbstract | Figures/TablesFigures/Tables | ReferencesReferences AbstractThis paper proposes multi-hop scheduling algorithms for the All-to-All Broadcast (AAB) problem in Wavelength Division Multiplexed (WDM) optical star

7、networks. The multi-hop AAB problem can be split into 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 speci

8、al case of the Round Robin Tournament (RRT) problem. 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. Overa

9、ll results indicate that our multi-hop scheduling algorithms 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 topol

10、ogies construction algorithms LTC-Even algorithm LTC-Odd algorithm4. Packet transmission scheduling Transmission scheduling (TS) algorithmOverlapped transmission scheduling (OTS) algorithm5. ConclusionAcknowledgementsReferencesVitaePurchase21VCSEL transmission at 10Gb/s for 20km single mode fiber WD

11、M-PON without dispersion compensation or injection lockingOriginal 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 ref

12、erence work articles AbstractAbstract | Figures/TablesFigures/Tables | ReferencesReferences 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 dispe

13、rsion severely limit VCSEL performance at bit rates of 10Gb/s and above. We 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 10Gb/s VCSEL over 23.6km of

14、single mode fiber is experimentally demonstrated, with a dispersion penalty of only 2.9dB. Simulated results are also presented which show that off-center wavelength filtering can extend the 10Gb/s network reach from 11.7km to 25.8km for a 4dB dispersion penalty. This allows for cheap and simple dis

15、persion mitigation in next generation VCSEL-based optical access networks.Article Outline1. Introduction2. Experimental setup3. VCSEL characterization4. Dispersion mitigation results5. SummaryAcknowledgementsReferencesPurchase22Ant colony optimization for dynamic routing and wavelength assignment in

16、 WDM networks with sparse wavelength conversionOriginal Research ArticleEngineering 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 AbstractAbst

17、ract | Figures/TablesFigures/Tables | ReferencesReferences AbstractSince optical WDM networks are 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 fo

18、r a communication model to route requests subject to delay bounds. Since the NP-hard minimum Steiner 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-heuristi

19、c based upon the ant colony optimization (ACO) approach to produce approximate solutions in a timely manner. In the literature, the ACO approach has been successfully applied to several well-known combinatorial optimization problems whose solutions might be in the form of paths on the associated gra

20、phs. The ACO algorithm proposed in this paper incorporates several new features so as to 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

21、 designed and conducted to study the performance of the proposed algorithm. Comparing with 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. In

22、troduction2. Problem formulation3. ACO design for DRWA-DC 3.1. Initialization of ACO3.2. 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 fo

23、rmulation4.3. Comparisons of iterations5. ConclusionsReferencesPurchase23Theory-inspired development of new nonlinear optical materials and their integration into silicon photonic circuits and devicesOriginal Research ArticleOptical Materials, Volume 32, Issue 6, April 2010, Pages 658-668Larry R. Da

24、lton, David Lao, Benjamin C. Olbricht, Stephanie Benight, Denise H. Bale, Joshua A. Davies, Todd Ewy, Scott R. Hammond, Philip A. SullivanShow preview| Related articles|Related reference work articles Purchase24Talent Management and HRM in Multinational companies in Beijing: Definitions, differences

25、 and driversOriginal Research ArticleJournal of World Business, Volume 45, Issue 2, April 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 methodOriginal Research ArticleOptics Communications, Volume 283, Issue 20, 15 October 2010, Pages 4099-4103Behnam Saghirzadeh Darki, Nosrat GranpayehShow preview| Related articles|Related reference work