最新刊期
      卷 ， 期 1 ， 2002
      • MAO Qian
        Issue 1, Pages: 1-8(2002) DOI: 10.13756/j.gtxyj.2002.01.001
        摘要：Recommendation G.703 which is the physical/electrical characteristics of hierarchical digital interfaces, It is very useful and important standard in digital communications. Since it was published in 1972, it is revised many times. The last revision is cosented in Oct.2001 at SG15 2nd plenary meeting of 2001 to 2004 study period. This paper introduces the main revised contents.  
        关键词：interface;specification;digital communication;physical characteristics   
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      • Issue 1, Pages: 8(2002)
          
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      • SUI Zhi cheng,JIANG Xi jun,WU Zhi jian
        Issue 1, Pages: 9-13(2002) DOI: 10.13756/j.gtxyj.2002.01.002
        摘要：The development of Multiprotocol Label Switching technology and the rapid advance of core technology all optical networking produce a sort of even more tight Internet Protocol over Dense Wavelength Division Multiplexing integrated scheme :Multiprotocol Lambda Switching. It combines the advantage of controlling capability of MPLS and large capacity switching and transmitting of optical switching device. It allows the service layer to dynamically apply to transmission layer for bandwidth through the existing control plane. First, this article introduces MPλS network structure ,then labors MPλS routing and wavelength distributing scheme and discusses the limitation of MPλS and its related protocol including the extended GMPLS technology.  
        关键词：MPλS;optical network;traffic engineering;router   
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      • GAO Ze hua,Qian Zong jue,Xu Da xiong
        Issue 1, Pages: 14-16(2002) DOI: 10.13756/j.gtxyj.2002.01.003
        摘要：The application scheme of OCDMA in the optical access networks is studied and analyzed in this paper. It can be seen from computer simulation that if OCDMA is used in optical access networks, the networks needn’t to be synchronous. In the downstream direction OAN has good security. The user and the service have random access to the network. It can construct an agile access tansmission platform.  
        关键词：optical access networks（OAN）;passive optical network（PON）;optical code division multiple access（OCDMA）   
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      • JIA Lu hua,WANG Chun hua,HUANG Zhao ming
        Issue 1, Pages: 17-20(2002) DOI: 10.13756/j.gtxyj.2002.01.004
        摘要：Several strategies using packet over WDM technology in the MAN are described. Related MAC protocols are analyzed. The key technologies in these strategies are discussed in detail. Finally, some predications are given.  
        关键词：MAN;MAC;Packet over WDM   
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      • Lü Ya li,LIN Jin tong
        Issue 1, Pages: 21-25(2002) DOI: 10.13756/j.gtxyj.2002.01.005
        摘要：The paper first studies photonic switching technology deeply, then introduces acousto optic tunable filters and optical buffer in particular which are key components in all optical networks, finally envisions the future of photonic switching technology.  
        关键词：photonic switching technology;all optical networks;acousto optic tunable filters（AOTF）;optical buffer   
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      • ZHANG Ji dong 1,TAO Zhi yong 2
        Issue 1, Pages: 26-30(2002) DOI: 10.13756/j.gtxyj.2002.01.006
        摘要：The article briefly introduces EPON technology studied by IEEE 802.3 EFM, its advantages as a broadband access technology, the basic working principle and the key techniques to achieve it.  
        关键词：Ethernet PON;OLT;ONU/ONT;PON   
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      • XIA Yue hui,HUANG Yong qing,CHEN Xue,REN Xiao min
        Issue 1, Pages: 31-33(2002) DOI: 10.13756/j.gtxyj.2002.01.007
        摘要：On the basis of the generation mechanism of polarization mode dispersion, This paper studied the dynamical equation and a geometrical model for polarization mode dispersion in single mode fiber.  
        关键词：PMD;elliptical polarized light;birefringence;Poincaré sphere   
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      • ZHANG Xia,HUANG Yong qing,REN Xiao min
        Issue 1, Pages: 34-36(2002) DOI: 10.13756/j.gtxyj.2002.01.008
        摘要：Polarization mode dispersion has become an important limiting factor for the performance of long-distance high-bit-rate optical communication system. This paper introduces three different methods for feedback control, and then presents a comparison among them.  
        关键词：polarization mode dispersion;dispersion compensation;feedback control   
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      • ZHANG Xing jian
        Issue 1, Pages: 37-40(2002) DOI: 10.13756/j.gtxyj.2002.01.009
        摘要：The paper discusses the fiber nonlinear effects correlative with refractive index, including SPM, XPM and FWM, on high speed optical transmission, as well as the solutions to mitigate such affections.  
        关键词：SPM;XPM;FWM;optical fiber communication   
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      • ZHANG Yin ying,DAI En guang,WU De ming,XU An shi
        Issue 1, Pages: 41-44(2002) DOI: 10.13756/j.gtxyj.2002.01.010
        摘要：The initial chirp of optical pulse has been used to compensate dispersion in optical fiber communication. The relation between the initial chirp of optical pulse and the dispersive function of a single mode fiber has been studied. It has been shown from simulation that the linear initial chirp of optical pulse can compensate first order dispersion to some extent, but it increases the distortion effects of the high order dispersion on the transmitting optical pulse.  
        关键词：initial chirp;first order dispersion;high order dispersion;pulse expansion factor   
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      • SHI Hui ping
        Issue 1, Pages: 45-48(2002) DOI: 10.13756/j.gtxyj.2002.01.011
        摘要：With more and more OPGW used in electric power line, it is important to choose appropriate OPGW to match the actual conditions of electric power line. The structures and characteristics of some familiar OPGW are compared in this paper, while some clamps for installation of OPGW are expatiated. The conclusions will give aid to the user of OPGW and the readers interested in OPGW.  
        关键词：OPGW;structure;clamp   
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      • GUO Ai huang,FU Jun mei
        Issue 1, Pages: 49-52(2002) DOI: 10.13756/j.gtxyj.2002.01.012
        摘要：Using the method of matrix transformation, This paper analyzed the optical signal input/output wavelength transmission characteristics of N×N Arrayed Waveguide Grating （AWG） multiplexer/demultipexer, its wavelength transmission characteristics include multiplexing, demultiplexing, wavelength routing and optical path add/drop multiplexing. Based on the analysis, the way of obtaining exact signal output place is presented when N difference wavelengths transmit N×N optical signals simultaneously. The analysis of the wavelength transmission plays an important role in using AWG multiplexer/demultiplexer in wavelength routing of fiber optic communication networks.  
        关键词：arrayed waveguide grating;wavelength transmission;matrix transfer   
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      • LI Li jun,LIN Hong rong,CHI Xiao ling
        Issue 1, Pages: 53-57(2002) DOI: 10.13756/j.gtxyj.2002.01.013
        摘要：In this pager, the affect of the self phase modulation effect in gain saturated semiconductor optical amlifier on the shape and phase of transmission pulse is analyzed,the focus is on the different pulse indexes （Gaussian pulse or super Gaussian pulses） and the different pulse widths （compare to the carrier lifetime）.  
        关键词：semiconductor optical amplifier;gain saturation;self phase modulation（SPM）   
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      • HU Jun wu 1,WU Tao 2
        Issue 1, Pages: 58-62(2002) DOI: 10.13756/j.gtxyj.2002.01.014
        摘要：The optical switches and optical switch arrays,as key components in DWDM optical network, are used to implement the route selection, wavelength selection and optical cross-connect in optical layer. This paper discussed and compared the optical switch and optical switch array technologies.  
        关键词：optical switch;switch array;optical communication;optical network   
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