光通信研究 Pub Date : 2013-07-10 DOI: 10.1109/NOC-OCI.2013.6582875

V. Mai, T. Thang, A. Pham

引用次数: 5

An asynchronous WDMA protocol without collisions for ring MANs: Study for Internet traffic packet size variation 面向环城域网的无冲突异步WDMA协议:互联网流量数据包大小变化研究

光通信研究 Pub Date : 2013-07-10 DOI: 10.1109/NOC-OCI.2013.6582879

P. Baziana, I. Pountourakis

{"title":"An asynchronous WDMA protocol without collisions for ring MANs: Study for Internet traffic packet size variation","authors":"P. Baziana, I. Pountourakis","doi":"10.1109/NOC-OCI.2013.6582879","DOIUrl":"https://doi.org/10.1109/NOC-OCI.2013.6582879","url":null,"abstract":"This study presents a wavelength division multiplexing multi-ring architecture for metropolitan area networks (MANs). An asynchronous transmission WDMA protocol is introduced that serves the variable size of Internet packets in nowadays ring MANs under asymmetric traffic scenarios. Especially, the proposed WDMA protocol takes under consideration the time sensitivity of Internet traffic and each time instant allows the transmission of variable size packets that do not collide over the WDM channels and at destination. In this way, the proposed access scheme is totally collisions-free, while it ensures optimal fiber bandwidth exploitation, especially under high offered loads. Also, dropping probability and total delay experienced reduction is achieved, while throughput improvement is obtained that reaches almost 300% as compared with other relative protocol. The proposed network architecture manages high scalability and maintenance since it exploits the transceivers tunability benefits to use all wavelengths for both transmission and reception. Finally, a simulation model based on Poisson traffic statistics is developed for the performance measures evaluation.","PeriodicalId":57196,"journal":{"name":"光通信研究","volume":"11 1","pages":"137-144"},"PeriodicalIF":0.0,"publicationDate":"2013-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72854865","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

Optical attenuation estimation from measured visibility data in Islamabad, Pakistan 巴基斯坦伊斯兰堡实测能见度资料的光学衰减估计

光通信研究 Pub Date : 2013-07-10 DOI: 10.1109/NOC-OCI.2013.6582891

M. S. Khan, M. R. Naqvi, M. A. Khan, M. Latif, K. Ullah, R. Khan, R. Wali, E. Leitgeb

引用次数: 8

On the temporal evolution of backbone topological robustness 主干拓扑鲁棒性的时间演化

光通信研究 Pub Date : 2013-07-10 DOI: 10.1109/NOC-OCI.2013.6582878

Dimitris Maniadakis, Athanasios Balmpakakis, D. Varoutas

引用次数: 9

Quantum key distribution over optical access networks 光接入网上的量子密钥分配

光通信研究 Pub Date : 2013-07-10 DOI: 10.1109/NOC-OCI.2013.6582861

S. Aleksic, D. Winkler, G. Franzl, A. Poppe, B. Schrenk, F. Hipp

{"title":"Quantum key distribution over optical access networks","authors":"S. Aleksic, D. Winkler, G. Franzl, A. Poppe, B. Schrenk, F. Hipp","doi":"10.1109/NOC-OCI.2013.6582861","DOIUrl":"https://doi.org/10.1109/NOC-OCI.2013.6582861","url":null,"abstract":"It is well known that optical access networks are able to provide high data rates over long distances and to a reasonable number of users. Security and privacy are always a challenge for public accessible network infrastructures. Especially in time-division multiplexing passive optical networks (TDM-PONs), in which the downstream signal is broadcasted to all users connected via the same wavelength channel in a shared fiber link, privacy can be a critical concern. Although encryption at the application layer can provide a high level of security, this can be achieved only if the encryption key distribution is perfectly save. On the other hand, encryption on the physical layer such as quantum cryptography or, more precisely, quantum key distribution (QKD) is a very promising approach to achieve secure communication. However, there remain several issues that have to be solved before the quantum cryptography reaches the maturity level needed for a cost effective implementation in practical networks. In this paper, we address quantum key distribution (QKD) over passive optical access networks, which is an enabling technology required to cost efficiently deploy practical quantum encrypted data communication in the access area. We study different methods to integrate QKD systems in conventional optical access networks and quantitatively evaluate their suitability for a potential implementation.","PeriodicalId":57196,"journal":{"name":"光通信研究","volume":"32 1","pages":"11-18"},"PeriodicalIF":0.0,"publicationDate":"2013-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85618612","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: 20

Hybrid lattice photonic crystal fiber 混合晶格光子晶体光纤

光通信研究 Pub Date : 2013-07-10 DOI: 10.1109/NOC-OCI.2013.6582859

Soeun Kim, Yang Sao Lee, C. Kee, Chung-Ghiu Lee

引用次数: 4

Outage probability of multihop free space optical communications over nakagami fading channels 中上衰落信道上多跳自由空间光通信的中断概率

光通信研究 Pub Date : 2013-07-10 DOI: 10.1109/NOC-OCI.2013.6582890

Xuan Tang, Zhengyuan Xu, Zabih Ghassemlooy

引用次数: 5

Performance analysis and comparison of optical IDMA and optical CDMA techniques using unipolar transmission scheme 单极传输方案下光IDMA与光CDMA的性能分析与比较

光通信研究 Pub Date : 2013-07-10 DOI: 10.1109/NOC-OCI.2013.6582868

A. Morsy, E. El-Fiky, Haitham S. Khallaf, H. Shalaby

引用次数: 6

Optical splitters configuration for long-reach passive optical network deployment 用于远距离无源光网络部署的分光器配置

光通信研究 Pub Date : 2013-07-10 DOI: 10.1109/NOC-OCI.2013.6582888

C. Zukowski, D. Payne, M. Ruffini

引用次数: 7

Hybrid BPSK-modified MPPM: A scheme for enhancing optical MPPM in optical fiber communications 混合bpsk改进MPPM:一种在光纤通信中增强光MPPM的方案

光通信研究 Pub Date : 2013-07-10 DOI: 10.1109/NOC-OCI.2013.6582893

H. Selmy, Hossam M. H. Shalaby, Haitham S. Khallaf, Z. Kawasaki

{"title":"Hybrid BPSK-modified MPPM: A scheme for enhancing optical MPPM in optical fiber communications","authors":"H. Selmy, Hossam M. H. Shalaby, Haitham S. Khallaf, Z. Kawasaki","doi":"10.1109/NOC-OCI.2013.6582893","DOIUrl":"https://doi.org/10.1109/NOC-OCI.2013.6582893","url":null,"abstract":"A hybrid binary phase shift keying-modified multipulse pulse-position modulation (hybrid BPSK-modified MPPM) scheme is proposed as a new modulation technique to improve both the symbol-error rate performance and bandwidth utilization efficiency of conventional optical multi-pulse pulse position modulation (MPPM) scheme in optical fiber communication systems. Whereas in conventional MPPM scheme, unmodulated pulses are transmitted in every signal block, BPSK modulated pulses is transmitted in the proposed hybrid scheme. That is, the information is encoded in both the positions and phases of the transmitted pulses. The transmission characteristics, transmitter and receiver structures, bandwidth utilization, and optimum decoding for the proposed scheme are presented in this paper. Several performance measures are derived and compared to those of conventional MPPM schemes, adopting both coherent and direct detection receivers, under the same data transmission rates. Our results reveal that, at same average power levels, the proposed hybrid BPSK-modified MPPM scheme achieves much lower levels of symbol-error rates compared to those of ordinary MPPM schemes. Furthermore, in terms of bandwidth-utilization efficiency, the proposed hybrid modulation scheme achieves much higher efficiencies than that of ordinary MPPM schemes.","PeriodicalId":57196,"journal":{"name":"光通信研究","volume":"2 1","pages":"217-224"},"PeriodicalIF":0.0,"publicationDate":"2013-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75540379","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

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