Pub Date : 2010-12-01DOI: 10.1109/HONET.2010.5715783
A. Hassan, Muneer I. Bazama, T. Saad, H. Mouftah
In this paper, we investigate and evaluate the performance of two fast reroute mechanisms in packet switched core networks. Such mechanisms enable, in the case of a network fault, the fast switchover of protected traffic onto pre-established backup paths within minimal time (typically below 50 ms) to minimize traffic loss. Our research testbed consists of both real and emulated IP/MPLS Label Switching Routers (LSRs). Using empirical tests, we compare the two fast protection mechanisms MPLS Traffic Engineering (TE) Fast Reroute (FRR), and IP FRR to protect MPLS LDP traffic. In our tests, we consider single link failures protected with pre-provisioned backup paths using TE-FRR tunnels, or IP Fast Reroute (IP-FRR) alternate paths. We compare the two techniques in terms of traffic loss and network time convergence obtained by repeating the tests multiple times.
{"title":"Investigation of fast reroute mechanisms in an optical testbed environment","authors":"A. Hassan, Muneer I. Bazama, T. Saad, H. Mouftah","doi":"10.1109/HONET.2010.5715783","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715783","url":null,"abstract":"In this paper, we investigate and evaluate the performance of two fast reroute mechanisms in packet switched core networks. Such mechanisms enable, in the case of a network fault, the fast switchover of protected traffic onto pre-established backup paths within minimal time (typically below 50 ms) to minimize traffic loss. Our research testbed consists of both real and emulated IP/MPLS Label Switching Routers (LSRs). Using empirical tests, we compare the two fast protection mechanisms MPLS Traffic Engineering (TE) Fast Reroute (FRR), and IP FRR to protect MPLS LDP traffic. In our tests, we consider single link failures protected with pre-provisioned backup paths using TE-FRR tunnels, or IP Fast Reroute (IP-FRR) alternate paths. We compare the two techniques in terms of traffic loss and network time convergence obtained by repeating the tests multiple times.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133058719","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 : 2010-12-01DOI: 10.1109/HONET.2010.5715754
F. S. Ujager, S. Zaidi, U. Younis
Semiconductor lasers have the potential to meet demands for next generation high speed optical networks. Their low cost, wide tunability, low power consumption, and very good spectral response make them ideal transmission sources. This paper presents a review of the current applications, commercial availability, and future directions of semiconductor lasers. Comparative analysis of these lasers identifies their deployment in different optical networks.
{"title":"A review of semiconductor lasers for optical communications","authors":"F. S. Ujager, S. Zaidi, U. Younis","doi":"10.1109/HONET.2010.5715754","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715754","url":null,"abstract":"Semiconductor lasers have the potential to meet demands for next generation high speed optical networks. Their low cost, wide tunability, low power consumption, and very good spectral response make them ideal transmission sources. This paper presents a review of the current applications, commercial availability, and future directions of semiconductor lasers. Comparative analysis of these lasers identifies their deployment in different optical networks.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124264854","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 : 2010-12-01DOI: 10.1109/HONET.2010.5715784
Aqeel A. Qureshi, M. Ramzan, S. Zaidi
Ever increasing demand for more bandwidth over the internet has lead to the development of many new technologies and architectures. Among these, Hybrid of Wireless and Optical networks have become increasingly important because of their “mobility” and “flexibility” in the wireless part and “robustness” and “high capacity” in the wired part. Hybrid Wireless Optical Broadband Access Network (WOBAN) is such an architecture comprising best of both the worlds. Despite being advantageous, this multi domain architecture can experience many failure scenarios both in the wired and wireless parts. These failures may range from a wireless router failure to the cut in the fiber resulting in the denial of services to the end user. In this research work we attempted to solve this issue through a multipath routing algorithm so that once a failure is detected; the traffic is instantly routed through other active paths. Simulation results have shown improved path delays and reduced packet loss as compared to existing algorithms. The improvement is achieved by employing disjoint routing paths and using a routing metric based on the network topology and media i.e. expected transmission count.
{"title":"Fault aware routing algorithm to enhance network resiliency & achieve load balancing in Hybrid Wireless Optical Broadband Access Network","authors":"Aqeel A. Qureshi, M. Ramzan, S. Zaidi","doi":"10.1109/HONET.2010.5715784","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715784","url":null,"abstract":"Ever increasing demand for more bandwidth over the internet has lead to the development of many new technologies and architectures. Among these, Hybrid of Wireless and Optical networks have become increasingly important because of their “mobility” and “flexibility” in the wireless part and “robustness” and “high capacity” in the wired part. Hybrid Wireless Optical Broadband Access Network (WOBAN) is such an architecture comprising best of both the worlds. Despite being advantageous, this multi domain architecture can experience many failure scenarios both in the wired and wireless parts. These failures may range from a wireless router failure to the cut in the fiber resulting in the denial of services to the end user. In this research work we attempted to solve this issue through a multipath routing algorithm so that once a failure is detected; the traffic is instantly routed through other active paths. Simulation results have shown improved path delays and reduced packet loss as compared to existing algorithms. The improvement is achieved by employing disjoint routing paths and using a routing metric based on the network topology and media i.e. expected transmission count.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127949972","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 : 2010-12-01DOI: 10.1109/HONET.2010.5715780
A. Hellany, M. Nagrial, J. Rizk
Australia had started EMC regulation process since 1997, and today most of local manufacturers are familiar with Australian EMC regulation and requirement. Today different tests and administrative compliance process exist in different countries, which are leading to a significant duplication of efforts and cost. Foreign manufacturers and importers of electrical/electronic product may not be familiar with the compliance scheme. This paper attempts to provide an overview of the Australian EMC regulations and industry Code of Practice. There is a tendency towards regional unity and deregulation around the world and the future development of EMC technology in Australia and worldwide is related to our ability to regulate and educate.
{"title":"EMC compliance with reference to Australia","authors":"A. Hellany, M. Nagrial, J. Rizk","doi":"10.1109/HONET.2010.5715780","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715780","url":null,"abstract":"Australia had started EMC regulation process since 1997, and today most of local manufacturers are familiar with Australian EMC regulation and requirement. Today different tests and administrative compliance process exist in different countries, which are leading to a significant duplication of efforts and cost. Foreign manufacturers and importers of electrical/electronic product may not be familiar with the compliance scheme. This paper attempts to provide an overview of the Australian EMC regulations and industry Code of Practice. There is a tendency towards regional unity and deregulation around the world and the future development of EMC technology in Australia and worldwide is related to our ability to regulate and educate.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128447811","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 : 2010-12-01DOI: 10.1109/HONET.2010.5715768
K. Maamoun, H. Mouftah
In this paper, desirable performance of fault localization process in all-optical networks is presented by employing the recently introduced Monitoring-Trail (m-trail) (that was proved to yield better performance by establishing monitoring resources in a shape of trails) [1]. As well, new techniques for deploying m-trails on networks along with its established lightpaths to perform fault localization are introduced. A novel technique based on Geographic Midpoint and the use of pair-wise shortest-paths that employ the standard Dijkstra algorithm, an adapted Chinese Postman's Problem (CPP) solution and adapted Traveling Salesman's Problem (TSP) solution algorithms. In addition, a manual exercise method can be directly applied to the ACT table. Different examples are given to illustrate these techniques with a brief description on its establishment algorithms. Using m-trails with established lightpaths to perform fault localization is a superb technique as it saves network resources; by reducing the number of the m-trails required for fault localization and hence the number of wavelengths used in the network [1].
{"title":"Novel techniques for deploying monitoring trails (m-trails) for fault localization in all-optical networks","authors":"K. Maamoun, H. Mouftah","doi":"10.1109/HONET.2010.5715768","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715768","url":null,"abstract":"In this paper, desirable performance of fault localization process in all-optical networks is presented by employing the recently introduced Monitoring-Trail (m-trail) (that was proved to yield better performance by establishing monitoring resources in a shape of trails) [1]. As well, new techniques for deploying m-trails on networks along with its established lightpaths to perform fault localization are introduced. A novel technique based on Geographic Midpoint and the use of pair-wise shortest-paths that employ the standard Dijkstra algorithm, an adapted Chinese Postman's Problem (CPP) solution and adapted Traveling Salesman's Problem (TSP) solution algorithms. In addition, a manual exercise method can be directly applied to the ACT table. Different examples are given to illustrate these techniques with a brief description on its establishment algorithms. Using m-trails with established lightpaths to perform fault localization is a superb technique as it saves network resources; by reducing the number of the m-trails required for fault localization and hence the number of wavelengths used in the network [1].","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127411985","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 : 2010-12-01DOI: 10.1109/HONET.2010.5715793
M. Nur-E-Alam, M. Vasiliev, V. Kotov, K. Alameh
In this paper, we report on the fabrication of RF sputtered Bi-substituted lutetium iron garnet films doped with aluminum and featuring in-plane easy magnetization axis orientation as well as very attractive optical, magnetic and magneto-optical properties (MO figure of merit exceeding 15° at 635 nm, coercivity below 50 Oe and Faraday-effect magnetic field sensitivity up to 157 °/(cm·Oe) at 532 nm). These magnetically-soft thin-film engineered materials have a wide range of potential applications in next-generation integrated optics, magnetophotonics and magnetic field sensors.
{"title":"High-quality RF-sputtered magneto-optic garnet films of Bi1.8Lu1.2Fe3.6Al1.4O12 with low coercivity for applications in integrated optics, imaging and sensing devices","authors":"M. Nur-E-Alam, M. Vasiliev, V. Kotov, K. Alameh","doi":"10.1109/HONET.2010.5715793","DOIUrl":"https://doi.org/10.1109/HONET.2010.5715793","url":null,"abstract":"In this paper, we report on the fabrication of RF sputtered Bi-substituted lutetium iron garnet films doped with aluminum and featuring in-plane easy magnetization axis orientation as well as very attractive optical, magnetic and magneto-optical properties (MO figure of merit exceeding 15° at 635 nm, coercivity below 50 Oe and Faraday-effect magnetic field sensitivity up to 157 °/(cm·Oe) at 532 nm). These magnetically-soft thin-film engineered materials have a wide range of potential applications in next-generation integrated optics, magnetophotonics and magnetic field sensors.","PeriodicalId":197677,"journal":{"name":"7th International Symposium on High-capacity Optical Networks and Enabling Technologies","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133925075","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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