最新刊期
      卷 ， 期 1 ， 2003
      • ZHANG Xu
        Issue 1, Pages: 1-4(2003) DOI: 10.13756/j.gtxyj.2003.01.001
        摘要：The paper begins with briefly mentioning the use of packet switching in the new generation telecommunication network.then, it describes in detail the application of optical packet switching （OPS） in the forthcoming optical communication network, including the node architecture, packet format, input and output interfaces, and some especially important technologies, such as regeneration, synchronization, header processing, optical buffer, space switching, and wavelength conversion.  
        关键词：data communication;packet switching;optical communication network;OPS   
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      • Issue 1, Pages: 4(2003) DOI: 10.13756/j.gtxyj.2003.01.016
          
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      • TANG Jian jun,JI Yue feng
        Issue 1, Pages: 5-8(2003) DOI: 10.13756/j.gtxyj.2003.01.002
        摘要：This article discusses design issues related to a new switching paradigm called optical burst switching （OBS）. And then it describes how OBS can be applied to the next generation optical Internet, and in particular how offset times and delayed reservation（DR） can help avoiding the use of optical buffer, and support quality of service （QoS） at the WDM layer.  
        关键词：OBS;just enough time（JET）;DR;QoS   
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      • CHEN Li,HE Yan
        Issue 1, Pages: 9-13(2003) DOI: 10.13756/j.gtxyj.2003.01.003
        摘要：This article focuses on the performance parameters of optical transceiver module decided by the technology features of EPON system. It also lists these parameters suggested by IEEE 802.3ah, and analyzes the research situation and development tendency of EPON optic transceiver module.  
        关键词：EPON;optical transceiver;PON;Ethernet   
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      • TANG Hai feng,ZHANG Rui feng,LI Ying chun,SHEN Yang,LIN Ru jian
        Issue 1, Pages: 14-17(2003) DOI: 10.13756/j.gtxyj.2003.01.004
        摘要：Ethernet passive optical network（EPON）,a new access technology is introduced in the paper. Some key issues in media access control like ranging and upstream access are discussed. The hardware and software implementation schemes of ONU are also proposed.  
        关键词：access network;PON;ranging;MAC;bandwidth allocation   
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      • SHEN Yang,TANG Hai feng,LIN Ru jian
        Issue 1, Pages: 18-22(2003) DOI: 10.13756/j.gtxyj.2003.01.005
        摘要：This paper introduces a new Ethernet network, the Ethernet passive optical network（EPON）. Because it’s special point to multipoint architecture, EPON needs a new upstream multiple access scheme （Request/Grant） which is different from the traditional Ethernet MAC （CSMA/CD）. The math model of the new scheme and an analysis of it are presented. Finally, some useful conclusions are given.  
        关键词：EPON;upstream multiple access;math model analysis   
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      • DONG Hai feng,YANG Shu wen
        Issue 1, Pages: 23-27(2003) DOI: 10.13756/j.gtxyj.2003.01.006
        摘要：The paper analyses the performance of the address codes for optical code division multiple access （OCDMA） system, including unipolar and bipolar codes. Four kinds of bipolar encoding schemes are presented. The unipolar system is much inferior to the bipolar system in many fields and the later is a practical way to implement OCDMA system with large capacity.  
        关键词：OCDMA;address code;bipolar code   
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      • ZHONG Zhao wei
        Issue 1, Pages: 28-31(2003) DOI: 10.13756/j.gtxyj.2003.01.007
        摘要：This paper outlined the technology development, standard types and reference moldel of 10 Gbit/s Ethernet （10 GbE）, Analysed main features of IEEE 802.3ae,the difference between physical layer of LAN and that of WAN and their application spheres, discussed the main technologies to enhance the application reliability of 10 GbE, the technical trends after its standardization, and its development prospects.  
        关键词：GbE;MPLS;RPR;MRP;VSRP   
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      • ZHU Li yi 1,BA Ji dong 2
        Issue 1, Pages: 32-35(2003) DOI: 10.13756/j.gtxyj.2003.01.008
        摘要：Optical Ethernet is a network that operates over optical fiber to provide Ethernet local area network（LAN） data packet access services,its bottom layer connection can be realized at any standard Ethernet rate including 10 Mbit/s,100 Mbit/s,1 Gbit/s or 10 Gbit/s. The optical Ethernet extends Ethernet technologies from LAN to metropolitan area network（MAN）.It also extends the advantages of Ethernet to MAN, thus greatly reducing the network construction cost of carriers.  
        关键词：optical Ethernet;MAN;LAN   
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      • QUAN Pei
        Issue 1, Pages: 36-38(2003) DOI: 10.13756/j.gtxyj.2003.01.009
        摘要：This paper introduced the Ethernet access solution which is one of popular broadband accessing solution in carrier environment, and researched the presented problems of LAN accessing solution using Ethernet technology, such as security problem, maintenance, investing cost and charging. The corresponding suggestion of above problems is presented at the end of this paper.  
        关键词：broadband access technology;Ethernet access solution;carrier environment   
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      • SHEN Xiao qiang,SHAO Zhong hao,YU Juan
        Issue 1, Pages: 39-42(2003) DOI: 10.13756/j.gtxyj.2003.01.010
        摘要：This paper simulates statistical characteristic of PMD in polarization maintaining fiber（PMF） link, and compares distribution characteristic of differential group delay（DGD） under different conditions. From our simulating results, we know that under the same conditions, the DGD distribution trends to Maxwell distribution when the number of PMF increases; with the number of variables increasing, less segment of PMF can lead to Maxwell distribution.  
        关键词：Poincaré sphere;Stokes vector;PMD;DGD   
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      • JIA Guang ming,JIA Dong fang,LI Shi chen
        Issue 1, Pages: 43-46(2003) DOI: 10.13756/j.gtxyj.2003.01.011
        摘要：This paper describes the principles of all kinds of highly nonlinear optical fibers, and their applications in supercontinuum optical pulse generation and wavelength conversion.  
        关键词：highly nonlinear optical fiber;supercontinuum optical pulse;wavelength conversion   
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      • HE Wan hui,YIN Xin da,CHEN Yong shi,FU Cheng peng,YANG Tao tao
        Issue 1, Pages: 47-50(2003) DOI: 10.13756/j.gtxyj.2003.01.012
        摘要：In this paper, we introduce the theoretic model of distributed fiber Raman amplifier in WDM optical transmission system and analyse the design of gain flatness. Finally, we prove the effectiveness of this method through experiment.  
        关键词：distributed RFA;Runge Kutta;EDFA;on off gain;net gain   
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      • Issue 1, Pages: 50(2003)
          
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      • YU Juan,LIN Hong rong,SHEN Xiao qiang
        Issue 1, Pages: 51-55(2003) DOI: 10.13756/j.gtxyj.2003.01.013
        摘要：This paper describes the theoretical model and simplified model of Raman amplifiers, analyses and compares three simulation methods for forward pumped Raman amplifiers, gives analytical equation of the backward pumped Raman amplifiers when neglecting pump depletion. On the basis of the results, this paper gives the amplification distance of forward and backward pumped Raman amplifiers as well as the maximum unrepeatered length of dual pumped Raman amplifiers.  
        关键词：FRA;theoretical model;numerical simulation;pump   
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      • MAO Yu 1,WEN Xue yin 2,ZOU Jian hua 1
        Issue 1, Pages: 56-57(2003) DOI: 10.13756/j.gtxyj.2003.01.014
        摘要：This paper presents a method for designing multiwavelength pumped fiber Raman amplifier to required any gain profile. Using this method, we achieved a gain profile about 20 dB and gain ripple less than 0.2 dB. This resulit is an improvement in gain flatness compared to existing multiwavelength pumped fiber Raman amplifiers.  
        关键词：FRA;stimulated Raman scattering;inheritance arithmetic   
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      • XIAO Ling yan 1,XU Yuan zhong 2,HUANG De xiu 1
        Issue 1, Pages: 58-62(2003) DOI: 10.13756/j.gtxyj.2003.01.015
        摘要：This paper presented a fiber Bragg grating（FBG） design method based on causality analysis. The method was applied to design the structure parameters of uniform FBG for filtering, and chirped FBG for dispersion compensation. The results show that the analysis curve of the gratings designed here is in good agreement with the expected curve.  
        关键词：FBG;causality analysis;grating design   
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      • Issue 1, Pages: 62(2003) DOI: 10.13756/j.gtxyj.2003.01.017
          
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