最新刊期
      卷 ， 期 6 ， 1998
      • Yu Jianguo
        Issue 6, Pages: 1-3(1998) DOI: 10.13756/j.gtxyj.1998.06.001
        摘要：The optical communication system of 10 Gb/s in G. 652 over 1170 km is studied in this paper. Simulate experiment is done for DCF and chirp grating to compensate dispersion respectively. Chirp fiber grating was designed to fit system demand according to the result of experiment.  
        关键词：dispersion compensation;chirp fiber grating;apodisation   
        2
        |
        67
        |
        2
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27505287 false
        发布时间：
      • Issue 6, Pages: 4-7(1998) DOI: 10.13756/j.gtxyj.1998.06.002
        摘要：In this article, the author establishes functional architecture model of PDH transport network using generic functional architecture of transport network which is defined in ITU-T Recommendation G. 805. On this base, combining with the requirement of PDH optical transmission system network management, the author establish management information model of PDH optical transmission system the for the network element view.  
        关键词：PDH;Information model;optical transmission system   
        2
        |
        27
        |
        0
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27505247 false
        发布时间：
      • Issue 6, Pages: 8-11(1998) DOI: 10.13756/j.gtxyj.1998.06.003
        摘要：We designed a digital circuit unit that makes use of undefined section overhead to transmit data signal. By use of this unit, it is possible to write and read some bytes in section overhead from terminal workstation. These are some of the feature functions of SDH series products of WRI. Here we describe the function and the research work of this unit.  
        关键词：section overhead;byte;data channel   
        2
        |
        34
        |
        1
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27505385 false
        发布时间：
      • Issue 6, Pages: 12-15(1998) DOI: 10.13756/j.gtxyj.1998.06.004
        摘要：A whole set of methods to realize the software of B-ISDN UNI layer 3 signalling are discussed in this article, according to the newest Q. 2971 protocol of ITU-T and the writers own project. Those methods can deal with the signalling styles of pointto-point and point-to-multipoint both, and can arrange them freely.  
        关键词：B-ISDN;ATM switching;UNI;point-to-multipoint signalling;SDL;FSM   
        2
        |
        20
        |
        0
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27505334 false
        发布时间：
      • Issue 6, Pages: 16-20(1998) DOI: 10.13756/j.gtxyj.1998.06.005
        摘要：ATM offers two kinds of connection, the Permanent Virtual Circuit and the Switched Virtual Circuit. The latter has an advantage over the former. But, to a great extent, whether the SVC can be accepted by users, is determined by whether the SVC signaling is efficient, flexible and reliable. The paper describes the point to point SVC signaling protocol Q. 2931 and the point to multipoint SVC signaling protocol Q. 2971 at the user network interface. Then, it lays the author’s finger on the limitation of the SVC signaling today.  
        关键词：Asynchronous transfer mode;user network interface signaling;switched virtual circuit   
        2
        |
        57
        |
        0
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27505271 false
        发布时间：
      • Mao Suofang et al
        Issue 6, Pages: 21-24(1998) DOI: 10.13756/j.gtxyj.1998.06.006
        摘要：To improve the survivability 0f broadband optical fiber transport networks effectively, there should be an uniform self-healing strategy which integrates restoration technologies of different layers. Based on the layering model, this paper proposed an integration self-healing strategy to which the serial and parallel start-up methods are applied.  
        关键词：integration;self-healing strategy;restoration technology   
        2
        |
        20
        |
        0
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27505363 false
        发布时间：
      • Yang Bangxiang
        Issue 6, Pages: 25-29(1998) DOI: 10.13756/j.gtxyj.1998.06.007
        摘要：In this paper, relative techniques about multi-wavelength signal transmission in wavelength division multiplexing system are introduced, including optical fiber technique, dispersion management, gain equalization, flat gain EDFA and polarization scrambling, present level and developing trend are analyzed.  
        关键词：optical communication;wavelength division multiplexing;signal transmission   
        2
        |
        62
        |
        5
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27505295 false
        发布时间：
      • Wu Yousheng et al
        Issue 6, Pages: 30-32(1998) DOI: 10.13756/j.gtxyj.1998.06.008
        摘要：This paper presents the implementation of prechirp in 2. 5 Gbit/s optical transmission system. In the paper, the prechirp and self phase modulation （SPM） in 2. 5 Gbit/s optical transmission system are analysed. The reference for the research of high speed optical transmission system is supplied.  
        关键词：transmitter module （TM）;prechirp;self phase modulation（SPM）   
        2
        |
        90
        |
        2
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27505255 false
        发布时间：
      • Issue 6, Pages: 33-35(1998) DOI: 10.13756/j.gtxyj.1998.06.009
        摘要：This article introduce the frame structure for the Rate of 64 to 1 920 kbit/ s of audiovisual teleservices in N-ISDN and primay group channel.  
          
        2
        |
        16
        |
        0
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27505373 false
        发布时间：
      • Issue 6, Pages: 36-38(1998) DOI: 10.13756/j.gtxyj.1998.06.010
        摘要：The electrical noise power spectrum of singnal-spontaneous and spontaneous-spontaneous beat noise is analyzed in the paper. The beat noise characteristics of EDFA are demonstrated through expriment.  
        关键词：beat noise;power spectrum;ASE   
        2
        |
        356
        |
        6
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27505326 false
        发布时间：
      • Issue 6, Pages: 39-42(1998) DOI: 10.13756/j.gtxyj.1998.06.011
        摘要：Analogue transmitter pose severe linearity requirements on the sources used to drive them. So modulator linearization techniques have great importance. In this paper, we presents a number of linearization techniques that have been developed for Mach-Zehnder external modulators, especially a simple predistortion linearization technique which will have extensive application in future.  
        关键词：Mach-Zehnder external modulator;linearization;predistortion   
        4
        |
        279
        |
        1
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27505317 false
        发布时间：
      • Zhang Mu
        Issue 6, Pages: 43-47(1998) DOI: 10.13756/j.gtxyj.1998.06.012
        摘要：This paper discuses about the thermophoretic effect in PCVD process under the condition of 1. 0±0. 05g/min deposition rate. Its influence on both process and products quality is also mentioned.  
          
        2
        |
        75
        |
        0
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27505280 false
        发布时间：
      • Issue 6, Pages: 48-51(1998) DOI: 10.13756/j.gtxyj.1998.06.013
        摘要：The structure designing and manufacturing technique of halogen-free flame-retardant optical cables were described in detail in this papers, and the investigation on the properties especially the burning behaviour of above-named cable were carried out. The results demonstrated that the cable has the same transmission properties as the traditional cable and it is characterized by its small smoke, non-toxicity and no flame spread during fire. It is a novel non-pollutant optical cable which can be used in local networks and specific networks with fire prevention requirements.  
        关键词：optical cable;flame retardant;Process;burning behaviour;nonpollutant   
        2
        |
        63
        |
        0
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27505302 false
        发布时间：
      • Issue 6, Pages: 52-56(1998) DOI: 10.13756/j.gtxyj.1998.06.014
        摘要：The paper discusses design method of ADSS optical fiber cable structure parameters,some matrials selecting of optical fiber cable and the key points of manufacturing process have been analyzed. Finally, The measuring datas are listed on our developed all dielectric self-supporting optical fiber cable.  
          
        2
        |
        46
        |
        0
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27505346 false
        发布时间：
      • Issue 6, Pages: 57-59(1998) DOI: 10.13756/j.gtxyj.1998.06.015
        摘要：本文介绍了SDH设备在麻城铁路网的组网方式、设备的配置、单元板的功能及应用。  
        关键词：SDH;铁路;应用   
        2
        |
        41
        |
        1
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27505356 false
        发布时间：
      0