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On segment-shared protection for dynamic connections in multi-domain optical mesh networks 多域光网状网络中动态连接的段共享保护
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.802453
Xiaoning Zhang, D. Liao, Sheng Wang, Hongfang Yu
{"title":"On segment-shared protection for dynamic connections in multi-domain optical mesh networks","authors":"Xiaoning Zhang, D. Liao, Sheng Wang, Hongfang Yu","doi":"10.1117/12.802453","DOIUrl":"https://doi.org/10.1117/12.802453","url":null,"abstract":"In this paper, the problem of how to provide survivability to multi-domain optical mesh networks is studied. Differing from the survivable research on single-domain networks, the whole network topology is unknown for all the source nodes. According to this point, we propose a novel protection algorithm called Enhanced Local Segment- Shared Protection (ELSSP) based on the simplified virtual topology for dynamic connections in multi-domain optical mesh networks. For the dynamic connections, ELSSP assigns rational link-cost for the virtual link on the virtual topology when calculating the primary path, and provides segment-shared protection in the passing domains of the primary path. Simulation results show the good network performance of ELSSP.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"21 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":"114319059","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: 18
Investigation of self-collimation frequencies in 2-D photonic crystals 二维光子晶体自准直频率的研究
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.799460
Guimin Lin, Xiyao Chen, Yufei Wang, Bo Ni, Junzhen Jiang, Y. Qiu
{"title":"Investigation of self-collimation frequencies in 2-D photonic crystals","authors":"Guimin Lin, Xiyao Chen, Yufei Wang, Bo Ni, Junzhen Jiang, Y. Qiu","doi":"10.1117/12.799460","DOIUrl":"https://doi.org/10.1117/12.799460","url":null,"abstract":"The self-collimation frequencies (SCFs) in two-dimensional photonic crystals (2-D PhC) have been investigated systematically by the plane-wave expansion method. In the wave-vector space, the square-lattice 2-D PhCs have some square-shaped equifrequency contours (EFCs) both for TE modes and for TM modes. Narrow-beam lights with these frequencies can propagate in the directions normal to the flat borders of the EFCs without any significant broadening, which is known as self-collimation effect. We consider the 2-D PhCs consisting of a square lattice of air cylinders in a dielectric material and the 2-D PhCs consisting of a square lattice of dielectric cylinders in air respectively. Calculation results show how SCFs of TM and TE modes change with the radius of cylinders and the refractive index of the material. These results can be applied to designing the PhC devices based on self-collimation effect.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"59 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":"116144590","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
Upper boundary of BER performance in asynchronous coherent time-spreading optical CDMA system 异步相干扩频光CDMA系统误码率性能的上边界
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.801871
Jianhua Ji, Qing Wu, Zhi-peng Zhang, Shu-wen Yang
{"title":"Upper boundary of BER performance in asynchronous coherent time-spreading optical CDMA system","authors":"Jianhua Ji, Qing Wu, Zhi-peng Zhang, Shu-wen Yang","doi":"10.1117/12.801871","DOIUrl":"https://doi.org/10.1117/12.801871","url":null,"abstract":"Multiple-access interference (MAI) and beat noise (BN) are analyzed in asynchronous coherent time-spreading OCDMA system according to the aperiodic cross-correlation function. Relationship between the mean intensity of aperiodic crosscorrelation and MAI and BN is deduced. Considering the worst system performance, upper bound of BER performance is evaluated by the maximum value of the mean intensity of aperiodic cross-correlation. For 511 length Gold sequence, coherent time-spreading OCDMA system can support less than 5 interfering users in the worst performance.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"48 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":"129438511","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
GMPLS control plane failure recovery GMPLS控制平面故障恢复
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.803761
Jing Wu, M. Savoie
{"title":"GMPLS control plane failure recovery","authors":"Jing Wu, M. Savoie","doi":"10.1117/12.803761","DOIUrl":"https://doi.org/10.1117/12.803761","url":null,"abstract":"Failures in the GMPLS (Generalized Multi-Protocol Label Switching) control plane and in the data plane may independently occur. The established data plane connections such as lightpaths in WDM networks must remain operational in the event of a control plane failure. A control plane failure should not cause changes of the state of connections and resources in the data plane. In addition, the control plane needs to recover the lost state information, or acquire up-to-date state information. The engineering of GMPLS control plane failure recovery techniques must consider different failure scenarios, co-ordinations of different recovery mechanisms. In this paper, we summarize the graceful restart mechanism for the signalling protocols, then present a two-step failure recovery of the signalling protocols to improve the recover speed.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"68 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":"123125072","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: 3
A fast path-based approach to infer link loss rates by explicit estimation 一种基于路径的基于显式估计的链路损失率快速推断方法
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.804025
Haibo Su, Wentao Chen, Yong Li, Shijun Lin, L. Su, Depeng Jin, Lieguang Zeng
{"title":"A fast path-based approach to infer link loss rates by explicit estimation","authors":"Haibo Su, Wentao Chen, Yong Li, Shijun Lin, L. Su, Depeng Jin, Lieguang Zeng","doi":"10.1117/12.804025","DOIUrl":"https://doi.org/10.1117/12.804025","url":null,"abstract":"To estimate the link loss rates using network tomography, this paper proposes a Fast Path-based Approach (FPA) by explicit estimation. Instead of inferring the link loss rates directly, we first infer the path loss rates from which we can easily derive the link loss rates. In addition, the path loss rates are inferred by a new estimator which is an explicit function of loss observations. The presented estimator is analytical and only requires simple arithmetic calculation. It is also proved to be consistent and have the same asymptotic variance as that of the maximum likelihood estimator (MLE). The simulation results show that the FPA can accurately estimate the link loss rates.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"214 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":"125692017","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
Blocking analysis of dynamic lightpath establishment based on multistates reservation for wavelength-routed networks 基于多状态保留的波长路由网络动态光路建立阻塞分析
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.803306
Yongli Zhao, Jie Zhang, Li Li, Dahai Han, Yu Yao, Ting Liang, W. Gu
{"title":"Blocking analysis of dynamic lightpath establishment based on multistates reservation for wavelength-routed networks","authors":"Yongli Zhao, Jie Zhang, Li Li, Dahai Han, Yu Yao, Ting Liang, W. Gu","doi":"10.1117/12.803306","DOIUrl":"https://doi.org/10.1117/12.803306","url":null,"abstract":"Two methods of reservation namely ANIR (all nodes-initiated reservation) and MSR (multi-states reservation) are proposed and compared with SIR (source-initiated reservation) and DIR (destination-initiated reservation). The four methods of reservation are simulated in NSFNET and ARPA topologies. Numeric results show that the blocking probability of ANIR is lower than SIR, but the number of packages which it generates is larger, and the blocking probability of MSR is lower than DIR and SIR under light load.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"172 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":"123369818","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
Design and implementation of scalable IPv4-IPv6 internetworking gateway 可扩展的IPv4-IPv6互联网关的设计与实现
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.803102
Guosheng Zhu, Shao-hua Yu, Jinyou Dai
{"title":"Design and implementation of scalable IPv4-IPv6 internetworking gateway","authors":"Guosheng Zhu, Shao-hua Yu, Jinyou Dai","doi":"10.1117/12.803102","DOIUrl":"https://doi.org/10.1117/12.803102","url":null,"abstract":"This paper proposed a scalable architecture of IPv4-IPv6 internetworking gateway based on EZchip 10Gbps network processor NP-1c. The Application Layer Gateway(ALG) of control plane can be upgraded without needing to modify the data forwarding plane.A SIP ALG of 3GPP IMS(IP Multimedia Subsystem)was implemented and tested under real China Next Generation Internet(CNGI) network environment.IPv4 SIP UEs can communicate with IPv6 SIP UEs through the gateway.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"32 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":"122591563","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: 2
Application-driven grid node architecture for intensive data services on grid based ASON 应用驱动的网格节点架构，用于基于网格的ASON上的密集数据服务
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.803586
Runze Wu, Yuefeng Ji
{"title":"Application-driven grid node architecture for intensive data services on grid based ASON","authors":"Runze Wu, Yuefeng Ji","doi":"10.1117/12.803586","DOIUrl":"https://doi.org/10.1117/12.803586","url":null,"abstract":"Users and applications need to own greater ability to control network resources for satisfying their requirements and new service pattern. Optical grid nodes include resource, control and switching functional. Optical grid testbed is built to verify node structure and five character of optical grid on ASON network, which involve application-driven, grid service and optical resource uniting, parallel lightpath scheduling, wide resource sharing and multi-granularity bandwidth service. An optical grid node function framework and physical implement scheme is proposed based on distributed network architecture orienting on-demand resource service. Considering the proposed optical grid scheme, corresponding control mechanism is given to satisfy the resource requirement for grid applications and realize distributed resource scheduling on demand.","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":"130173073","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
Recent transport network development using ROADMs and 40G transmission 最近使用roadm和40G传输的传输网络的发展
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.807757
K. Hagimoto
{"title":"Recent transport network development using ROADMs and 40G transmission","authors":"K. Hagimoto","doi":"10.1117/12.807757","DOIUrl":"https://doi.org/10.1117/12.807757","url":null,"abstract":"This paper overviews the recent transport network development using reconfigurable optical add drop multiplexers (ROADMs) and 40G transmission technologies. High-speed transmission technologies with the line-rate of 40G or 100G are reviewed first. Then, the advanced modulation format suitable for constructing the metro-core 40G ROADM network from the viewpoints of impairments is discussed. Finally the advanced functionalities that enhance ROADM network agility are described.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"35 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":"132916171","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
Physical and functional awareness in optical networks 光网络中的物理和功能感知
SPIE/OSA/IEEE Asia Communications and Photonics Pub Date : 2008-11-19 DOI: 10.1117/12.807775
H. Waldman
{"title":"Physical and functional awareness in optical networks","authors":"H. Waldman","doi":"10.1117/12.807775","DOIUrl":"https://doi.org/10.1117/12.807775","url":null,"abstract":"The ever-growing complexity of communication networking has been enhanced by the huge capacity of optical networks, raising the need for new architectures. The WDM layer is now asked to be aware of emerging limitations of the physical layer and QoS requirements of the upper layers. This situation suggests that at least part of the network be designed for self-organization. The paper discusses the merits of swarm intelligence, and especially Ant Colony Optimization, to support a self-organized control plane of an optical network.","PeriodicalId":179447,"journal":{"name":"SPIE/OSA/IEEE Asia Communications and Photonics","volume":"185 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":"124704357","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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