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Analyzing and designing of reliable multicast based on FEC in distributed switch 分布式交换机中基于FEC的可靠组播分析与设计
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.803307
Ting Luo, Shao-hua Yu, Xueshun Wang
{"title":"Analyzing and designing of reliable multicast based on FEC in distributed switch","authors":"Ting Luo, Shao-hua Yu, Xueshun Wang","doi":"10.1117/12.803307","DOIUrl":"https://doi.org/10.1117/12.803307","url":null,"abstract":"AS businesses become more dependent on IP networks, lots of real-time services are adopted and high availability in networks has become increasingly critical. With the development of carrier grade ethernet, the requirements of high speed metro ethernet device are more urgently. In order to reach the capacity of hundreds of Gbps or Tbps, most of core ethernet switches almost adopted distributed control architecture and large capacity forwarding fabric. When distributed switch works, they always have one CE and many FE. There for, it shows the feature of multicast with one sender and many receivers. It is deserved research for us how to apply reliable multicast to distributed switch inner communication system. In this paper, we present the general architecture of a distributed ethernet switch, focusing on analysis the model of internal communication subsystem. According to its character, a novel reliable multicast communication mechanism based on FEC recovery algorithm has been applied and evaluated in experiment.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115114090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Design and implementation of wireless STB in DTV over EPON system 数字电视over EPON系统中无线机顶盒的设计与实现
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.804345
Yuguang Chang, Deming Liu, Shu Zhang
{"title":"Design and implementation of wireless STB in DTV over EPON system","authors":"Yuguang Chang, Deming Liu, Shu Zhang","doi":"10.1117/12.804345","DOIUrl":"https://doi.org/10.1117/12.804345","url":null,"abstract":"In this paper, we proposed to integrate WLAN technology with DTV over EPON system to provide wireless service to the DTV set-top-box(STB) for end user. First of all, the whole wireless DTV over EPON system architecture is introduced. There are mainly three parts: the accessing part, EPON system and the wireless receiving part. The working mechanism of each part is also described. Then, the paper focus on the design and implementation of the receiving device: wireless STB. The key point of the design is to integrate WLAN chipset into a normal DTV STB to enable wireless transmission. Hardware design is discussed in detail and software design is also mentioned in the last part of the article. Finally, conclusions are drawn out: WLAN signal could satisfy the transmission bandwidth requirement of DTV over EPON system. The proposed system can work properly.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121650185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamic QoS-based task scheduling with packing and partial cloning in optical grid 基于分组和部分克隆的光网格动态qos任务调度
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.803410
Huining. Yuan, Lei Liu, Jian Wu, X. Hong, Jintong Lin
{"title":"Dynamic QoS-based task scheduling with packing and partial cloning in optical grid","authors":"Huining. Yuan, Lei Liu, Jian Wu, X. Hong, Jintong Lin","doi":"10.1117/12.803410","DOIUrl":"https://doi.org/10.1117/12.803410","url":null,"abstract":"Nowadays scheduling jobs on parallel computers or grid components in grid environment has becoming more and more important. Detailed knowledge of the individual user preference is a necessary factor to be taken into account for developing appropriate scheduling strategies. Other than minimizing makespan [1], workload and the balancing of resource utilization is also an important aspect for scheduling. In the premise of satisfying the preference of individual user, previous approaches mainly focused on minimizing makespan, however workload balancing is rarely optimized. Therefore some of resources may leave underused while other resources are overused. In this paper, a new dynamic scheduling scheme is proposed, using the packing and partial cloning, and the expected QoS can be obtained. This scheme has been further evaluated by simulations and shown to yield good results compared with the former studies.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133481159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optical path dynamic routing algorithm based on traffic prediction 基于流量预测的光路动态路由算法
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.803105
Keita Obara, H. Hasegawa, Ken-ichi Sato
{"title":"Optical path dynamic routing algorithm based on traffic prediction","authors":"Keita Obara, H. Hasegawa, Ken-ichi Sato","doi":"10.1117/12.803105","DOIUrl":"https://doi.org/10.1117/12.803105","url":null,"abstract":"We propose a dynamic path allocation algorithm that considers all paths in the network simultaneously over a given time period. Numerical experiments demonstrate that the algorithm substantially reduces the blocking probability for path establishment.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132935089","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Failure probability analysis of optical grid 光网失效概率分析
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.803811
Yaoquan Zhong, W. Guo, Weiqiang Sun, Yaohui Jin, Weisheng Hu
{"title":"Failure probability analysis of optical grid","authors":"Yaoquan Zhong, W. Guo, Weiqiang Sun, Yaohui Jin, Weisheng Hu","doi":"10.1117/12.803811","DOIUrl":"https://doi.org/10.1117/12.803811","url":null,"abstract":"Optical grid, the integrated computing environment based on optical network, is expected to be an efficient infrastructure to support advanced data-intensive grid applications. In optical grid, the faults of both computational and network resources are inevitable due to the large scale and high complexity of the system. With the optical network based distributed computing systems extensive applied in the processing of data, the requirement of the application failure probability have been an important indicator of the quality of application and an important aspect the operators consider. This paper will present a task-based analysis method of the application failure probability in optical grid. Then the failure probability of the entire application can be quantified, and the performance of reducing application failure probability in different backup strategies can be compared, so that the different requirements of different clients can be satisfied according to the application failure probability respectively. In optical grid, when the application based DAG (directed acyclic graph) is executed in different backup strategies, the application failure probability and the application complete time is different. This paper will propose new multi-objective differentiated services algorithm (MDSA). New application scheduling algorithm can guarantee the requirement of the failure probability and improve the network resource utilization, realize a compromise between the network operator and the application submission. Then differentiated services can be achieved in optical grid.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116425004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Experimental performance evaluation of inter-domain path provisioning with multiple PCEs 多pce域间路径配置的实验性能评价
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.804289
S. Ishida, Y. Iizawa, I. Nishioka, So Araki
{"title":"Experimental performance evaluation of inter-domain path provisioning with multiple PCEs","authors":"S. Ishida, Y. Iizawa, I. Nishioka, So Araki","doi":"10.1117/12.804289","DOIUrl":"https://doi.org/10.1117/12.804289","url":null,"abstract":"In this paper, PCE-based inter-domain path computation has been discussed. Interworking of multiple PCEs with the BRPC procedure enables not only end-to-end shortest path computation but also end-to-end diverse path computation over multiple networks. We have analyzed various PCE-based inter-domain path computation strategies using BRPC, in terms of the path computation complexity. To reduce path computation time, a simplified path computation strategy was proposed and evaluated experimentally with our prototyped PCE system. Our experimental results show good correspondence with analytical ones. The proposed strategy drastically reduced path computation time down to one-seventh in comparison with the conventional strategy.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122146912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Single dye molecule laser via energy transfer mechanism 单染料分子激光的能量传递机理
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-18 DOI: 10.1117/12.802283
G. Shan, Wei Huang
{"title":"Single dye molecule laser via energy transfer mechanism","authors":"G. Shan, Wei Huang","doi":"10.1117/12.802283","DOIUrl":"https://doi.org/10.1117/12.802283","url":null,"abstract":"Motivated by the recent progresses in one-atom laser and single-molecule manipulation, this work presents the model and simulations of a single dye molecule laser device, which consists of a single dye molecule as an acceptor in a microcavity pumped by multiple donors via the intermolecular resonance energy transfer mechanism. The photon intensity is calculated at the emission peaks of donor and acceptor dyes for different pump rates and donor numbers. Finally, it is demonstrated that stimulated emission gains a distinct advantage over spontaneous emission under appropriate conditions. This work would have many important applications in a wide range of fields from physics and chemistry to nanotechnology in future.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127855220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photoluminescence properties of rare-earth doped Si-based films materials 稀土掺杂si基薄膜材料的光致发光性能
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-18 DOI: 10.1117/12.803073
Qingnian Wang, Meiling Yuan, Xinli Leng
{"title":"Photoluminescence properties of rare-earth doped Si-based films materials","authors":"Qingnian Wang, Meiling Yuan, Xinli Leng","doi":"10.1117/12.803073","DOIUrl":"https://doi.org/10.1117/12.803073","url":null,"abstract":"The photoluminescence (PL) spectra at room temperature for the silicon-based samples doped by Nd by ion implantation are measured. The results show that all the samples possess blue-violet photoluminescence properties under the ultraviolet light excitation and its light emission is stable. The intensity of PL spectra is closely relative to the dose of implantation and to the temperature of thermal annealing.The above samples were treated by anodization method. The PL spectra of porous samples which were treated by HNO3 were measured. The results show light emission efficiency of the porous samples that were treated by electro-chemical anodization etch and HNO3 is higher than those of ordinary PS samples under the same measuring conditions.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"7135 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129937653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The design of large-mode-area single-mode fiber 大模面积单模光纤的设计
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-18 DOI: 10.1117/12.803207
Guohua Wu, Libo Li, Q. Lou, Jun Zhou, Wenhan Huang, Shouqi Zhang, Wen Wang
{"title":"The design of large-mode-area single-mode fiber","authors":"Guohua Wu, Libo Li, Q. Lou, Jun Zhou, Wenhan Huang, Shouqi Zhang, Wen Wang","doi":"10.1117/12.803207","DOIUrl":"https://doi.org/10.1117/12.803207","url":null,"abstract":"Based on the frustrated total internal reflection theory, a leaky large-mode-area double clad fiber is designed. The propagation constants and leakage loss of the fundamental mode LP01 and sub-low order mode LP11 is investigated by using of the matrix method. Results show that the designed fiber can operate with single-mode.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123250936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
All-optical 20 Gbit/s NRZ-DPSK demodulation and clock recovery 全光20gbit /s NRZ-DPSK解调和时钟恢复
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-18 DOI: 10.1117/12.803066
Fei Wang, Xinliang Zhang, Jianji Dong, Yu Yu, Xi Huang
{"title":"All-optical 20 Gbit/s NRZ-DPSK demodulation and clock recovery","authors":"Fei Wang, Xinliang Zhang, Jianji Dong, Yu Yu, Xi Huang","doi":"10.1117/12.803066","DOIUrl":"https://doi.org/10.1117/12.803066","url":null,"abstract":"All-optical clock recovery (CR) from 20-Gbit/s nonreturn-to-zero differential phase-shift-keying (NRZ-DPSK) signal is demonstrated experimentally by using Polarization-Maintaining Fiber Loop Mirror Filter and semiconductor optical amplifier (SOA) fiber ring laser. Only by adjusting polarization controller (PC), NRZ-DPSK signal were conveniently and fast converted to pseudo return-to-zero (PRZ) signal via PMF-LMF. Then the PRZ signal is injected into the SOA fiber laser for CR. The recovered clock signals with the extinction ratio of 10 dB and the root-mean-square timing jitter of 850 fs is achieved under 231-1 pseudorandom binary sequence NRZ-DPSK signals measurement.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"34 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113970238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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