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Journal of Optical Networking最新文献

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Enhanced scaling and performance of an optical interconnect based on wavelength-division-multiplexed clockwork routing 基于波分复用时钟路由的光互连的增强缩放和性能
Journal of Optical Networking Pub Date : 2008-10-01 DOI: 10.1364/JON.7.000861
E. Bravi, D. Cotter
{"title":"Enhanced scaling and performance of an optical interconnect based on wavelength-division-multiplexed clockwork routing","authors":"E. Bravi, D. Cotter","doi":"10.1364/JON.7.000861","DOIUrl":"https://doi.org/10.1364/JON.7.000861","url":null,"abstract":"An optical routing network for applications requiring large numbers of nodes and low latency, such as the interconnection network inside a future high-end supercomputer, is described. The network is a development of an existing architecture based on a combination of clockwork routing and wavelength division multiplexing (WDM-CR). Although using the same underlying photonic technologies as WDM-CR, the new architecture has several advantages, including the following: the network can be scaled to greater numbers of nodes; routing between closely located nodes is more direct, resulting in lower latency and higher overall throughput; arbitration and control mechanisms are simplified; and the need for optical amplification is removed. Results obtained from full discrete-event traffic simulations demonstrate scalability to interconnection networks as large as 4096 nodes in a flat architecture.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"7 1","pages":"861-875"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.7.000861","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66590207","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 millimeter wave generated by octupling the frequency of the local oscillator 光毫米波是由本地振荡器的八倍频产生的
Journal of Optical Networking Pub Date : 2008-10-01 DOI: 10.1364/JON.7.000837
J. Ma, X. Xin, Jianjun Yu, Chongxiu Yu, Kuiru Wang, Huiying Huang, L. Rao
{"title":"Optical millimeter wave generated by octupling the frequency of the local oscillator","authors":"J. Ma, X. Xin, Jianjun Yu, Chongxiu Yu, Kuiru Wang, Huiying Huang, L. Rao","doi":"10.1364/JON.7.000837","DOIUrl":"https://doi.org/10.1364/JON.7.000837","url":null,"abstract":"What we believe to be a new scheme to generate an optical millimeter wave with octupling of the local oscillator via a nested LiNbO3 Mach-Zehnder modulator (MZM) is proposed and implemented by numerical simulation. Since the response frequency of the modulator and the local frequency are largely reduced, the bandwidth requirement of the transmitter to the optical and electrical components is reduced greatly. Then, the parameters of the nested modulator are analyzed theoretically, and we find that both the extinction ratio of the MZM and the phase imbalance between its two arms have influence on the performance of the generated optical millimeter wave.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"7 1","pages":"837-845"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.7.000837","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66590283","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: 82
Control plane issues in multilayer traffic engineering 多层交通工程中的控制平面问题
Journal of Optical Networking Pub Date : 2008-10-01 DOI: 10.1364/JON.7.000846
B. Puype, D. Colle, M. Pickavet, P. Demeester
{"title":"Control plane issues in multilayer traffic engineering","authors":"B. Puype, D. Colle, M. Pickavet, P. Demeester","doi":"10.1364/JON.7.000846","DOIUrl":"https://doi.org/10.1364/JON.7.000846","url":null,"abstract":"Multilayer traffic engineering utilizes functionality in multiple network layers to optimize network performance and resource usage. For IP-over-optical networks in particular, automatic optical switching allows provisioning of on-demand lightpaths serving as capacity for IP/multiprotocol label switching (MPLS) links, allowing online reconfiguration of the IP/MPLS layer logical topology. Multilayer traffic engineering builds on the interaction between IP/MPLS routing and logical topology configuration. Technical issues in the IP/MPLS layer limit traffic measurement accuracy as well as routing flexibility and number of allowable topology updates. Through simulation, we examine the extent to which both measurement inaccuracies and routing granularity degrade multilayer traffic engineering performance.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"7 1","pages":"846-860"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.7.000846","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66590416","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
Reliability Issues in Optical Networks: introduction to the feature issue 光网络中的可靠性问题:介绍特性问题
Journal of Optical Networking Pub Date : 2008-10-01 DOI: 10.1364/JON.7.000834
L. Wosinska, M. Tacca, A. Fumagalli, A. Autenrieth
{"title":"Reliability Issues in Optical Networks: introduction to the feature issue","authors":"L. Wosinska, M. Tacca, A. Fumagalli, A. Autenrieth","doi":"10.1364/JON.7.000834","DOIUrl":"https://doi.org/10.1364/JON.7.000834","url":null,"abstract":"This feature issue of the Journal of Optical Networking focuses on the architectures, technologies, and theory for achieving high service availability in optical transport networks.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"7 1","pages":"834-836"},"PeriodicalIF":0.0,"publicationDate":"2008-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.7.000834","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66590226","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
Cost modeling and evaluation of capital expenditures in optical multilayer networks 光多层网络中资本支出的成本建模与评估
Journal of Optical Networking Pub Date : 2008-09-01 DOI: 10.1364/JON.7.000814
R. Huelsermann, M. Gunkel, C. Meusburger, D. Schupke
{"title":"Cost modeling and evaluation of capital expenditures in optical multilayer networks","authors":"R. Huelsermann, M. Gunkel, C. Meusburger, D. Schupke","doi":"10.1364/JON.7.000814","DOIUrl":"https://doi.org/10.1364/JON.7.000814","url":null,"abstract":"Optical multilayer networks offer a high degree of freedom in network design, adapting to actual network requirements (demand types, topologies, etc.) and achieving cost-efficient realizations. Capital expenditures are one of the key differentiators for the evaluation of multilayer networks. A realistic cost model for Internet protocol/multiprotocol label switching (IP/MPLS), carrier-grade Ethernet, synchronous digital hierarchy/optical transport network (SDH/OTN), and WDM equipment from which overall capital expenditures can consistently be derived is contributed and discussed. A comprehensive collection of detailed cost values for different equipment types is presented. Furthermore, the cost model is applied to two case studies, one IP/MPLS-over-WDM study and one WDM study with two topologies, showing substitution effects of network elements to achieve overall capital expenditure minimization.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"7 1","pages":"814-833"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.7.000814","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66590174","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: 168
Providing absolute QoS in an OBS/WR architecture 在OBS/WR架构中提供绝对的QoS
Journal of Optical Networking Pub Date : 2008-09-01 DOI: 10.1364/JON.7.000796
B. Wu, Yang Qin, F. Xie, G. Feng
{"title":"Providing absolute QoS in an OBS/WR architecture","authors":"B. Wu, Yang Qin, F. Xie, G. Feng","doi":"10.1364/JON.7.000796","DOIUrl":"https://doi.org/10.1364/JON.7.000796","url":null,"abstract":"By employing optical burst switching (OBS) in its metropolitan portion and wavelength routing (WR) in the backbone portion, the hybrid OBS/WR architecture provides end-to-end all-optical connections to end users while inheriting the fine granularity of OBS and the low loss probability of WR. However, the original OBS/WR architecture can provide only relative quality of service (QoS). That is, the burst loss possibilities of high-priority traffic flows are guaranteed to be lower than those of low-priority traffic flows, but the upper burst loss bound cannot be guaranteed with this model. We propose a call admission control (CAC) scheme to provide absolute QoS in an OBS/WR architecture and a dynamical priority allocation algorithm (DPAA) to enhance the blocking probability performance of the proposed CAC scheme. We first analyze the burst loss performance of traffic flows in the OBS/WR architecture. Based on the analytical results, a CAC scheme is proposed to provide absolute burst loss guarantee. Besides the CAC scheme, we also design a DPAA that assigns priorities to incoming traffic flows according to their QoS requirements to further improve the performance. The analysis and simulation results show that the proposed CAC scheme guarantees upper burst loss bound to different traffic flows while achieving significantly higher bandwidth utilization than other existing absolute QoS schemes in conventional OBS networks, and the proposed DPAA can achieve lower blocking probability than the original CAC scheme while maintaining the absolute QoS.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"7 1","pages":"796-813"},"PeriodicalIF":0.0,"publicationDate":"2008-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.7.000796","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66590118","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: 4
Orthogonal-Frequency-Division Multiplexed Communications Systems and Networks: introduction to the focus issue 正交频分多路通信系统与网络:焦点问题导论
Journal of Optical Networking Pub Date : 2008-08-01 DOI: 10.1364/JON.7.000720
E. Wong
{"title":"Orthogonal-Frequency-Division Multiplexed Communications Systems and Networks: introduction to the focus issue","authors":"E. Wong","doi":"10.1364/JON.7.000720","DOIUrl":"https://doi.org/10.1364/JON.7.000720","url":null,"abstract":"This focus issue comprises five invited articles that provide a comprehensive overview of orthogonal-frequency-division multiplexing (OFDM), from theoretical concept through to the most recent advances in modulation, equalization, detection, and signal processing techniques in OFDM research.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"7 1","pages":"720-720"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.7.000720","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66589870","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-based optical slot switching access-distribution network with a 10 ns high-speed PLZT optical switch 基于gmpls的光槽交换接入-分配网络，采用10ns高速PLZT光交换机
Journal of Optical Networking Pub Date : 2008-08-01 DOI: 10.1364/JON.7.000744
M. Hayashitani, T. Kasahara, D. Ishii, Y. Arakawa, S. Okamoto, N. Yamanaka, N. Takezawa, K. Nashimoto
{"title":"GMPLS-based optical slot switching access-distribution network with a 10 ns high-speed PLZT optical switch","authors":"M. Hayashitani, T. Kasahara, D. Ishii, Y. Arakawa, S. Okamoto, N. Yamanaka, N. Takezawa, K. Nashimoto","doi":"10.1364/JON.7.000744","DOIUrl":"https://doi.org/10.1364/JON.7.000744","url":null,"abstract":"We design and implement an optical slot switching network for bulk content transfer. To realize the slot switching network, we employ the generalized multiprotocol label switching (GMPLS) extension protocol to reserve and release slots dynamically according to the application. We use optical switches as relay points in the slot switching network, and we employ a 10ns high-speed (Pb,La)(Zr,Ti)O3 (PLZT) optical switch. We extend the resource reservation protocol-traffic engineering (RSVP-TE) and realize optical slot reservation. In the slot reservation, the proposed scheme allocates a slot in a frame for clients in order to guarantee the minimum bandwidth. The scheme considers the accelerated and tentative slot reservation. In the slot switching network, we use the PLZT optical switch. The PLZT switch can improve the bandwidth utilization by reducing the guard time between slots unlike the microelectromechanical system (MEMS) switch. To realize the slot switching network, we develop a PLZT optical switch system with a GMPLS-based controller. By experiment based on the experimental network, we confirm that we can realize the slot switching network. We consider the application of the proposed network as an access network for content distribution.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"7 1","pages":"744-758"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.7.000744","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66589794","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: 6
Design algorithms for path-level grooming of traffic in WDM metro optical networks WDM城域光网络中业务量的路径级疏导设计算法
Journal of Optical Networking Pub Date : 2008-08-01 DOI: 10.1364/JON.7.000759
Srivatsan Balasubramanian, Arun Kumar Somani
{"title":"Design algorithms for path-level grooming of traffic in WDM metro optical networks","authors":"Srivatsan Balasubramanian, Arun Kumar Somani","doi":"10.1364/JON.7.000759","DOIUrl":"https://doi.org/10.1364/JON.7.000759","url":null,"abstract":"Recent research in new architecture design for wavelength-routed networks is focused on grooming (aggregation) of traffic at the optical layer. Typically, this is achieved in three steps: (1) configure the circuit in the form of a path or a tree; (2) use optical devices such as couplers or splitters to allow multiple users to share a circuit through point to point (P2P), point to multipoint (P2MP), multipoint to point (MP2P), or multipoint to multipoint (MP2MP); and (3) provide an arbitration mechanism to avoid contention among end users. We compare the performance of architectures that aggregate traffic at the path level. Based on extensive simulations, we conclude that, for the studied topology and traffic, (1) MP2MP outperforms other architectures by multiple orders of magnitude in single-hop scenarios, (2) P2P performs the best in multihop transceiver-constrained scenarios, and (3) P2MP performs the best in multihop wavelength-constrained scenarios.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"85 1","pages":"759-782"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.7.000759","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66589855","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: 6
Efficient dynamic bandwidth allocation for FSAN-compliant GPON 基于fsan的GPON高效动态带宽分配
Journal of Optical Networking Pub Date : 2008-08-01 DOI: 10.1364/JON.7.000783
M. Han, H. Yoo, B. Yoon, B. Kim, J. Koh
{"title":"Efficient dynamic bandwidth allocation for FSAN-compliant GPON","authors":"M. Han, H. Yoo, B. Yoon, B. Kim, J. Koh","doi":"10.1364/JON.7.000783","DOIUrl":"https://doi.org/10.1364/JON.7.000783","url":null,"abstract":"We suggest an immediate allocation with colorless grant (IACG) method for dynamic bandwidth allocation of a gigabit passive optical network (GPON) system. The suggested method is based on the GigaPON Access Network (GIANT) media access control (MAC) method. The IACG method can assign the transmission bandwidth regardless of the value of a scheduling counter, whereas the GIANT MAC method can assign the transmission bandwidth only when the scheduling counter has a value of 1. Also, unlike the GIANT MAC method, the IACG method utilizes the unallocated remainder of the transmission bandwidth. At the end of scheduling, the IACG MAC method assigns the unallocated remainder to each optical network unit (ONU) with an equal share. Using computer simulations with the self-similar traffic model, we show that the IACG method dramatically outperforms the GIANT MAC method in mean delay and frame-loss rate.","PeriodicalId":49154,"journal":{"name":"Journal of Optical Networking","volume":"7 1","pages":"783-795"},"PeriodicalIF":0.0,"publicationDate":"2008-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1364/JON.7.000783","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"66589965","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: 57
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