Pub Date : 2014-12-18DOI: 10.1109/ICOCN.2014.6987095
Weigang Hou, Lei Guo, Qing Cai, Lijiao Zhu
With the rapid development of electronic products, the high-speed computing and the personal mobile terminal all make greater demands the on-chip performance. Due to the limited bandwidth, the low communication efficiency and the bad scalability, the Network on Chip (NoC) has been unable to satisfy the requirements of the applications above. More recently, the Optical NoC (ONoC) is introduced as an efficient solution. Compared with NoC, ONoC has the higher bandwidth, the lower power consumption and the shorter latency. With the increasing number of IP cores on a single chip, the study of 3-Dimensional (3D) ONoC has already entered the preliminary stage. Thus in this paper, we design a new 3D ONoC topology structure called 3D X-Torus. Next, we design a bidirectional optical router and a vertical optical router for our topology. Finally, we propose the corresponding routing algorithm. Our simulation results demonstrate the performances of our 3D ONoC topology, optical router and routing algorithm.
随着电子产品的飞速发展，高速计算和个人移动终端都对片上性能提出了更高的要求。由于带宽有限、通信效率低、可扩展性差，片上网络(Network on Chip, NoC)已经不能满足上述应用的要求。最近，光学NoC (ONoC)作为一种有效的解决方案被引入。与NoC相比，ONoC具有更高的带宽、更低的功耗和更短的时延。随着单芯片上IP核数量的不断增加，三维ONoC的研究已经进入了初级阶段。因此，本文设计了一种新的三维ONoC拓扑结构，称为三维X-Torus。接下来，我们设计了双向光路由器和垂直光路由器。最后，提出了相应的路由算法。仿真结果验证了三维ONoC拓扑结构、光路由器和路由算法的性能。
{"title":"3D Torus ONoC: Topology design, router modeling and adaptive routing algorithm","authors":"Weigang Hou, Lei Guo, Qing Cai, Lijiao Zhu","doi":"10.1109/ICOCN.2014.6987095","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987095","url":null,"abstract":"With the rapid development of electronic products, the high-speed computing and the personal mobile terminal all make greater demands the on-chip performance. Due to the limited bandwidth, the low communication efficiency and the bad scalability, the Network on Chip (NoC) has been unable to satisfy the requirements of the applications above. More recently, the Optical NoC (ONoC) is introduced as an efficient solution. Compared with NoC, ONoC has the higher bandwidth, the lower power consumption and the shorter latency. With the increasing number of IP cores on a single chip, the study of 3-Dimensional (3D) ONoC has already entered the preliminary stage. Thus in this paper, we design a new 3D ONoC topology structure called 3D X-Torus. Next, we design a bidirectional optical router and a vertical optical router for our topology. Finally, we propose the corresponding routing algorithm. Our simulation results demonstrate the performances of our 3D ONoC topology, optical router and routing algorithm.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117072003","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}
Pub Date : 2014-12-18DOI: 10.1109/ICOCN.2014.6987089
L. Wosinski, F. Lou, L. Thylén
CMOS compatible photonic integrated circuits have gained great attentions in short haul interconnects applications because of the promises to tackle the issues of traditional copper interconnects. Towards the monolithic integration of electronics and photonics, lots of efforts have been made to decrease the device footprint by using surface plasmon polaritons (SPPs), in order to enhance performances and decrease power consumption. With current metals, this is, however, only true for single or few cascaded devices. This situation can be mitigated by hybridizing SPPs with dielectric modes; hybrid plasmonic waveguides based on silicon platform can provide an alternative to exploit the advantages of both plasmonics and silicon. This paper presents several examples of design, fabrication and characterization of hybrid plasmonic functional components based on silicon nanowire platform, including hybrid plasmonic directional couplers, polarization beam splitters, disks and rings with submicron radii. A proposal of electro-optic polymer modulator based on hybrid plasmonic ring resonator is also discussed. The presented components provide alternative perspectives of novel devices which may be useful in future inter- and intra-core communication systems.
{"title":"Hybrid plasmonic components based on silicon nanowire platform","authors":"L. Wosinski, F. Lou, L. Thylén","doi":"10.1109/ICOCN.2014.6987089","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987089","url":null,"abstract":"CMOS compatible photonic integrated circuits have gained great attentions in short haul interconnects applications because of the promises to tackle the issues of traditional copper interconnects. Towards the monolithic integration of electronics and photonics, lots of efforts have been made to decrease the device footprint by using surface plasmon polaritons (SPPs), in order to enhance performances and decrease power consumption. With current metals, this is, however, only true for single or few cascaded devices. This situation can be mitigated by hybridizing SPPs with dielectric modes; hybrid plasmonic waveguides based on silicon platform can provide an alternative to exploit the advantages of both plasmonics and silicon. This paper presents several examples of design, fabrication and characterization of hybrid plasmonic functional components based on silicon nanowire platform, including hybrid plasmonic directional couplers, polarization beam splitters, disks and rings with submicron radii. A proposal of electro-optic polymer modulator based on hybrid plasmonic ring resonator is also discussed. The presented components provide alternative perspectives of novel devices which may be useful in future inter- and intra-core communication systems.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126123327","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}
Pub Date : 2014-12-18DOI: 10.1109/ICOCN.2014.6987062
Ke Wang, C. Lim, A. Nirmalathas, E. Skafidas
High-speed wireless connectivity in personal areas is highly demanded and the optical wireless technology is a promising solution. In this paper, recent progress of high-speed optical wireless communication systems in personal area networks is briefly reviewed.
{"title":"High-speed optical wireless communications in personal area networks","authors":"Ke Wang, C. Lim, A. Nirmalathas, E. Skafidas","doi":"10.1109/ICOCN.2014.6987062","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987062","url":null,"abstract":"High-speed wireless connectivity in personal areas is highly demanded and the optical wireless technology is a promising solution. In this paper, recent progress of high-speed optical wireless communication systems in personal area networks is briefly reviewed.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132763399","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}
Pub Date : 2014-12-18DOI: 10.1109/ICOCN.2014.6987107
J. Ye, L. Yan, W. Pan, B. Luo, L. Shao, X. Zou, A. Yi
A photonic scheme to generate microwave signals with hybrid pulse-position modulation and binary phase shift keying format is proposed and experimentally demonstrated. Hybrid PPM-BPSK signals with 0.1ns symbol period and 20GHz carrier frequency are obtained.
{"title":"Photonic generation of hybrid PPM-BPSK microwave signals utilizing polarization-maintaining FBG","authors":"J. Ye, L. Yan, W. Pan, B. Luo, L. Shao, X. Zou, A. Yi","doi":"10.1109/ICOCN.2014.6987107","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987107","url":null,"abstract":"A photonic scheme to generate microwave signals with hybrid pulse-position modulation and binary phase shift keying format is proposed and experimentally demonstrated. Hybrid PPM-BPSK signals with 0.1ns symbol period and 20GHz carrier frequency are obtained.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"181 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126013974","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}
Pub Date : 2014-12-18DOI: 10.1109/ICOCN.2014.6987076
P. Miao, Lenan Wu, Linning Peng
In order to mitigate the nonlinearity of resonant cavity light emitting diode (RCLED) in the step-index polymer optical fiber (SI-POF) communication, polynomial pre-distorter and look-up-table (LUT) pre-distorter are proposed in POF system to compensate the RCLED nonlinearity. Joint optimizations considering biasing current, electrical average signal power and modulation orders are carried out to make good trade-offs with system linearity. With the help of pre-distortion methodologies, 750Mbps compensated discrete multi-tone (DMT) transmissions over 50m SI-POF link are successfully implemented below the bit error rate (BER) of 10-3 and more than 10dB BER performance improvement are achieved. The results illustrate that the proposed pre-distortion schemes are benefiting from higher power efficiency and exhibiting great resistance to nonlinearity, even could be well demodulated in the strong nonlinearity region, which demonstrates the feasibility and validity for RCLED nonlinearity mitigation in POF communication system.
{"title":"RCLED nonlinearity mitigation for polymer optical fiber communications","authors":"P. Miao, Lenan Wu, Linning Peng","doi":"10.1109/ICOCN.2014.6987076","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987076","url":null,"abstract":"In order to mitigate the nonlinearity of resonant cavity light emitting diode (RCLED) in the step-index polymer optical fiber (SI-POF) communication, polynomial pre-distorter and look-up-table (LUT) pre-distorter are proposed in POF system to compensate the RCLED nonlinearity. Joint optimizations considering biasing current, electrical average signal power and modulation orders are carried out to make good trade-offs with system linearity. With the help of pre-distortion methodologies, 750Mbps compensated discrete multi-tone (DMT) transmissions over 50m SI-POF link are successfully implemented below the bit error rate (BER) of 10-3 and more than 10dB BER performance improvement are achieved. The results illustrate that the proposed pre-distortion schemes are benefiting from higher power efficiency and exhibiting great resistance to nonlinearity, even could be well demodulated in the strong nonlinearity region, which demonstrates the feasibility and validity for RCLED nonlinearity mitigation in POF communication system.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114577677","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}
Pub Date : 2014-12-18DOI: 10.1109/ICOCN.2014.6987142
Minghua Cao, Jianqiang Li, Feifei Yin, Yitang Dai, Kun Xu
The performance of using bandpass sampling technique in optical phase-modulated and coherent detection (PM-CD) radio-over-fiber (RoF) links is analyzed. Additionally, a method to select aliasing-free bandpass sampling frequency is derived. This method is suitable for subcarrier multiplexing (SCM) scenario with the presence of independent free-running optical local oscillator (LO) caused frequency offset. Analytical assessment and simulations are used to determine the ultimate performance with respect to ADC bits resolution and laser linewidth. The simulation result shows that 8 bit resolution and narrow laser linewidth (less than 100kHz) are expected to achieve high performance link for undersampling applications in the PM-CD RoF links.
{"title":"Digital coherent detection with bandpass sampling in multiband phase-modulated radio-over-fiber links","authors":"Minghua Cao, Jianqiang Li, Feifei Yin, Yitang Dai, Kun Xu","doi":"10.1109/ICOCN.2014.6987142","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987142","url":null,"abstract":"The performance of using bandpass sampling technique in optical phase-modulated and coherent detection (PM-CD) radio-over-fiber (RoF) links is analyzed. Additionally, a method to select aliasing-free bandpass sampling frequency is derived. This method is suitable for subcarrier multiplexing (SCM) scenario with the presence of independent free-running optical local oscillator (LO) caused frequency offset. Analytical assessment and simulations are used to determine the ultimate performance with respect to ADC bits resolution and laser linewidth. The simulation result shows that 8 bit resolution and narrow laser linewidth (less than 100kHz) are expected to achieve high performance link for undersampling applications in the PM-CD RoF links.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122034692","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}
Pub Date : 2014-12-18DOI: 10.1109/ICOCN.2014.6987056
Jiahui Wu, Min Zhang, F. Wang, Yanan Yue, Shanguo Huang
We quantify the fragmentation in elastic optical networks and propose a defragmentation algorithm which takes network's existing condition of spectrum allocation into consideration for the first time, we simulate the blocking probability (BP) together with spectrum continuous degree of networks after using three different algorithms. The results show our defragmentation algorithm has better performance compared to the existing strategies.
{"title":"An optimal independent sets based greedy spectral defragmentation algorithm in elastic optical network","authors":"Jiahui Wu, Min Zhang, F. Wang, Yanan Yue, Shanguo Huang","doi":"10.1109/ICOCN.2014.6987056","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987056","url":null,"abstract":"We quantify the fragmentation in elastic optical networks and propose a defragmentation algorithm which takes network's existing condition of spectrum allocation into consideration for the first time, we simulate the blocking probability (BP) together with spectrum continuous degree of networks after using three different algorithms. The results show our defragmentation algorithm has better performance compared to the existing strategies.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117158454","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}
Pub Date : 2014-12-18DOI: 10.1109/ICOCN.2014.6987072
Hengjian Tang, F. Zhang, Xiaolu Zhang, Yu Zheng, Y. Wang, Junhua Qiu, Xiaohan Sun
We propose an improved ant colony algorithm for dynamic traffic grooming (IACA-DTG) in asynchronous optical packets switching networks, by using of the ratio of available wavelengths and path chosen length each iteration and the dynamic information updated on the available instant wavelengths in full network, which can implement traffic grooming under shorter path and less iterations. The algorithm has been evaluated through simulation and the results show the packets blocking probability can be reduced as 0.1 and wavelength utilization ratio can be increased as 0.2, compared with original ant colony algorithm.
{"title":"An improved ant colony algorithm for dynamic traffic grooming in asynchronous optical packets switching networks","authors":"Hengjian Tang, F. Zhang, Xiaolu Zhang, Yu Zheng, Y. Wang, Junhua Qiu, Xiaohan Sun","doi":"10.1109/ICOCN.2014.6987072","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987072","url":null,"abstract":"We propose an improved ant colony algorithm for dynamic traffic grooming (IACA-DTG) in asynchronous optical packets switching networks, by using of the ratio of available wavelengths and path chosen length each iteration and the dynamic information updated on the available instant wavelengths in full network, which can implement traffic grooming under shorter path and less iterations. The algorithm has been evaluated through simulation and the results show the packets blocking probability can be reduced as 0.1 and wavelength utilization ratio can be increased as 0.2, compared with original ant colony algorithm.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115746530","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}
Pub Date : 2014-12-18DOI: 10.1109/ICOCN.2014.6987126
Bowen Chen, Jie Zhang, Yongli Zhao, G. Luo
The problem of spectrum-shared ability is addressed by considering the shared-path protection in flexible bandwidth optical networks with distributed data centers interconnect. The overall objective of the problem is to minimize blocking probability of cloud service requests and to improving spectrum efficiency. We proposed a survivable algorithm with the spectrum-shared ability (SA_SSA) to address the above problem. For comparison, a traditional algorithm with spectrum-shared ability (TA_SSA) is also introduced. Simulation results show that, considering different the spectrum-shared abilities, SA_SSA is better performance in terms of blocking probability of cloud service requests, spectrum occupation ratio, and spectrum redundancy ratio compared to TA_SSA.
{"title":"Spectrum-shared ability in survivable flexible bandwidth optical networks with distributed data centers interconnect","authors":"Bowen Chen, Jie Zhang, Yongli Zhao, G. Luo","doi":"10.1109/ICOCN.2014.6987126","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987126","url":null,"abstract":"The problem of spectrum-shared ability is addressed by considering the shared-path protection in flexible bandwidth optical networks with distributed data centers interconnect. The overall objective of the problem is to minimize blocking probability of cloud service requests and to improving spectrum efficiency. We proposed a survivable algorithm with the spectrum-shared ability (SA_SSA) to address the above problem. For comparison, a traditional algorithm with spectrum-shared ability (TA_SSA) is also introduced. Simulation results show that, considering different the spectrum-shared abilities, SA_SSA is better performance in terms of blocking probability of cloud service requests, spectrum occupation ratio, and spectrum redundancy ratio compared to TA_SSA.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124007785","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}
Pub Date : 2014-12-18DOI: 10.1109/ICOCN.2014.6987082
Yanli Zhang, Changde Li, Y. Shi, Jie Xiao, Bin Wu, H. Wen, Xiaohong Jiang
Data Center Network (DCN) is the supporting platform for various applications in cloud services. As optical switch offers high bandwidth, low latency and reduced energy consumption, it becomes a promising switching solution for scalable DCN. Recently, a new DCN architecture with distributed component sets (racks and optical core switches) in a given optical network has been proposed to simplify the DCN internal connection and make the DCN fully scalable. Because the core switches play an important role in both external service access and inter-node traffic switching, a single core switch failure may lead to traffic congestion or collapse of a DCN. Based on an existing distributed DCN, in this paper we consider how to deploy a backup core switch to fight against an arbitrary single core switch failure while minimizing the total protection cost. Upon a core switch failure, all unaffected traffics keep their original routes unchanged, and predefined protection strategy (rerouting and switching) will take effect for the affected traffics. To solve this problem, we formulate an integer linear program (ILP) to place the backup core switch at a proper node and determine the fast traffic recovery mechanism. We validate the proposed design by extensive simulation studies.
DCN (Data Center Network)是云服务中各种应用的支撑平台。由于光交换具有高带宽、低时延和低能耗等优点，成为可扩展DCN的一种很有前途的交换解决方案。近年来，为了简化DCN内部连接，使DCN具有充分的可扩展性，提出了一种在给定光网络中采用分布式组件集(机架和光核心交换机)的DCN新架构。由于核心交换机在对外业务接入和节点间业务交换中都起着重要的作用，单个核心交换机故障可能会导致DCN的流量拥塞或崩溃。本文在现有分布式DCN的基础上，研究了如何部署备用核心交换机，以应对任意单核心交换机故障，同时使总保护成本最小化。当核心交换机发生故障时，所有未受影响的流量保持原有路由不变，并对受影响的流量采用预先设定的保护策略(重路由和倒换)。为了解决这一问题，我们制定了一个整数线性规划(ILP)，将备用核心交换机放置在适当的节点上，并确定了快速流量恢复机制。我们通过广泛的仿真研究验证了所提出的设计。
{"title":"Deployment of backup core switch in scalable distributed data center networks","authors":"Yanli Zhang, Changde Li, Y. Shi, Jie Xiao, Bin Wu, H. Wen, Xiaohong Jiang","doi":"10.1109/ICOCN.2014.6987082","DOIUrl":"https://doi.org/10.1109/ICOCN.2014.6987082","url":null,"abstract":"Data Center Network (DCN) is the supporting platform for various applications in cloud services. As optical switch offers high bandwidth, low latency and reduced energy consumption, it becomes a promising switching solution for scalable DCN. Recently, a new DCN architecture with distributed component sets (racks and optical core switches) in a given optical network has been proposed to simplify the DCN internal connection and make the DCN fully scalable. Because the core switches play an important role in both external service access and inter-node traffic switching, a single core switch failure may lead to traffic congestion or collapse of a DCN. Based on an existing distributed DCN, in this paper we consider how to deploy a backup core switch to fight against an arbitrary single core switch failure while minimizing the total protection cost. Upon a core switch failure, all unaffected traffics keep their original routes unchanged, and predefined protection strategy (rerouting and switching) will take effect for the affected traffics. To solve this problem, we formulate an integer linear program (ILP) to place the backup core switch at a proper node and determine the fast traffic recovery mechanism. We validate the proposed design by extensive simulation studies.","PeriodicalId":364683,"journal":{"name":"2014 13th International Conference on Optical Communications and Networks (ICOCN)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123950898","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}
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