最新刊期
      卷 ， 期 2 ， 1999
      • ZHANG Xu
        Issue 2, Pages: 1-4(1999) DOI: 10.13756/j.gtxyj.1999.02.001
        摘要：The paper briefly explains 3 key problems affecting the planning of national communication network: （1） the rapid growth of various communication traffic around the world, （2）the successful advances in communication technology achievements, （3） the important considerations needed in planning the future communication network. The paper suggests that, besides B-ISDN, attention should be paid to the prospects of IP over ATM and IP over WDM.  
        关键词：communication network;ISDN;data communication;IP;WDM   
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      • Issue 2, Pages: 5-10(1999) DOI: 10.13756/j.gtxyj.1999.02.002
        摘要：The rapid growth of Internet and increase in real-time and multimedia applications have created a need to improve routing technology. Several proposals involving application of layer 2 switching technology to layer 3 routing have been made to counter above challenges. Noticeable efforts in this directions are IP Switching. Tag Switching,ARIS, CSR and MPLS. This paper does a survey of these approaches, especially IP Switching and gives comparison between IP Switching and MPOA.  
        关键词：IP Switching;Tag Switching;ARIS;CSR;MPLS   
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      • QIAN Zong-yue
        Issue 2, Pages: 11-12(1999) DOI: 10.13756/j.gtxyj.1999.02.003
        摘要：This paper presents the importance of developing access network and the important role of access network system with V5 standard interface. The network management of access network and the application range of V5. 2 and V5. 1 interface systems are introduced.  
        关键词：access network;V5 interface;network management   
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      • WU Jun
        Issue 2, Pages: 13-20(1999) DOI: 10.13756/j.gtxyj.1999.02.004
        摘要：This paper describes many aspects about the technology of V5 interface in detail, including the origination, basic concept, protocol, running procedure, network management, realization, norm, standard,current situation of V5 interface and developing VB5 interface, etc.  
        关键词：V5 interface;access network;protocol;standard   
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      • JIANG Li-San
        Issue 2, Pages: 21-23(1999) DOI: 10.13756/j.gtxyj.1999.02.005
        摘要：The paper introduces the trait and application of V5 interface, and gives some viewpoints of signalling transfer stage.  
        关键词：access network;V5 interface;signalling transfer stage   
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      • Issue 2, Pages: 24-27(1999) DOI: 10.13756/j.gtxyj.1999.02.006
        摘要：The propagation of intensity-modulated signal in an cascaded optical amplifier conventional simple mode fiber system is numerically analyzed, taking self-phase modulation （SPM）, group-velocity dispersion （GVD）, amplifier spontaneous emission （ASE） into account. The effect of GVD and SPM are reduced by dispersion compensation fibers （DCF’s）. The simulation show if dispersion is well-compensated and amplifier spacing is decreased to 50 km, the distance 2 050 km is possible with errorfree.  
        关键词：EDFA;self-phase modulation;group-velocity dispersion;amplifier spontaneous emission noise   
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      • Issue 2, Pages: 28-30(1999) DOI: 10.13756/j.gtxyj.1999.02.007
        摘要：It is introduced a Optical receiver used in 10 Gbit/s SDH system. The optical interface parameters of the receiver suit the ITU-T G. SCS. We have made 10 Gbit/s SDH transmission experiments with this receiver.  
        关键词：optical receiver;timing regenerate;amplifier;optical interface parameter   
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      • YAN Chang-qing
        Issue 2, Pages: 31-35(1999) DOI: 10.13756/j.gtxyj.1999.02.008
        摘要：This article introduces the construction and the technology of WRI-CIMS system, then proposes some technologies of Computer Aided Process Planning which is still the obstruction in developing the CIMS system thoroughly.  
        关键词：optical communication equipment;CAD;CAPP;CAM   
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      • Issue 2, Pages: 35(1999) DOI: 10.13756/j.gtxyj.1999.02.009
          
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      • Issue 2, Pages: 36-42(1999) DOI: 10.13756/j.gtxyj.1999.02.010
        摘要：There are characteristics of high-speed and high-gain with SDH optical receiver module, so how to design circuit board is one of the keylinks determining whether a module can achieve its performance targets. Therefore in the paper high-speed-board design techniques have been minutely analyzed in many sided, combining with optical receiver module making. And based on fully utilizing high-speed-board design methods, a high sensitivity miniature SDH optical receiver module has been developed.  
        关键词：optical receiver module;high-speed-board design;power distribution;transmission line;cross-talk   
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      • Issue 2, Pages: 43-47(1999) DOI: 10.13756/j.gtxyj.1999.02.011
        摘要：An 8×2. 5 Gbit/s optical time division multiplexing signal generating system has been achieved by using two 1×8 single-mode fiber couplers. Optical pulse source is TSL-210 active mode-locked laser with tunable wavelength, pulse period is 400 ps （2. 5 Gbit/s）and pulse half-width is 32 ps. Experimental results show that, this optical time division multiplexing signal generating scheme has advantages of easily adjusting for output pulse span and amplitude, low cost and easily fabrication, can be used to increase pulse repetition rate conveniently for narrow pulse width optical source according to our demands. Our results prove the feasibility of the scheme.  
        关键词：optical time division multiplexing;singlemode fiber couplers;optical communication   
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      • Issue 2, Pages: 47(1999) DOI: 10.13756/j.gtxyj.1999.02.012
          
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      • FENG Lu
        Issue 2, Pages: 48-52(1999) DOI: 10.13756/j.gtxyj.1999.02.013
        摘要：Study the detailed physical process of the group-velocity dispersion-induced pulse broadening, this must be taken as prepare the ground for the founding of optical soliton in nonlinear fiber.  
        关键词：ultrashort laser pulse;Inear dispersion fiber;optical soliton communication   
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      • HUANG Yian-bin
        Issue 2, Pages: 53-57(1999) DOI: 10.13756/j.gtxyj.1999.02.014
        摘要：Positive Dispersion Shifted Single Mode Fiber （POSH）, is designed for super transmission rate, high capacity and long-haul system, while move the zero dispersion below 1520 nm and with lower positive dispersion in operation window to suppress the non-linearity effects. POSH fibre made by PCVD process has the best performance simultaneous in optical and geometry properties.  
        关键词：attenuation;dispersion;PCVD;WDM;FWM;non-linearity effect;PMD   
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      • Issue 2, Pages: 58-62(1999) DOI: 10.13756/j.gtxyj.1999.02.015
        摘要：This paper describes one kind of loosing tube production line for Φ8～Φ12mm large size optical fiber ribbon, including the process flow of the production line,redundancy generation principle and control method for redundancy. Some of the results have been from the actual production and renovation experiments for more than two years. In addition, the paper offers the detailed informations about the two specially designed and renovated devices for large size tube production.  
        关键词：lapping with model;input model;formation with vacuum and magative pressure   
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