最新刊期
      卷 ， 期 4 ， 1994
      • Zhang Xu
        Issue 4, (1994)
        摘要：The paper outlines the technical talks presented in the workshop on Lightwave, Wireless & Networking Technologies, held in the Chinese University of Hongkong recently. Besides the general planning considerations of communication networks introduced by the representatives from various organizations of Hongkong, Singapore, Tokyo, Beijing and Taipei, there are many experts presenting papers on the three fields of new information technology,namely, the National information infrastructure （Nil）, the Personal Communication Systems （PCS）,and the Asychronous Transfer Mode （ATM）.The contents of these talks reflect the coming New Generations of Optical Fiber and Wireless Transmission and Network Switching Technologies. This paper attempts to describe their essentials briefly.  
          
        2
        |
        73
        |
        3
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27502858 false
        发布时间：
      • Luo Lan
        Issue 4, (1994)
        摘要：This paper reports a kind of phase-spreading desychronizer developed for the purpose of pointer adjustment jitter reduction in SDH network. The characteristics of the desynchronizer and its output jitter are analyzed and’verified by the computer simulation.  
        关键词：SDH;pointer adjustment jitter;phase-spreading desynchronizer;bitleaking   
        2
        |
        32
        |
        2
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27502908 false
        发布时间：
      • Xie Yusheng,Xiong Zhaofei
        Issue 4, (1994)
        摘要：Frame synchronization is a key part in Pulse Position Modulation. The performance of this part affects the whole performance of the PPM system.In terms of the characteristics of PPM sigal,this paper uses the method of interpolating known PPM sequence to obtain frame synchronization. Two kinds of synchronization sequence are studied and algotithms are given.  
        关键词：PPM;frame synchronization;synchronization sequence   
        2
        |
        131
        |
        4
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27502916 false
        发布时间：
      • Zhong Weiping,Cheng Guoding
        Issue 4, (1994)
        摘要：In the information society,optical cable television （CATV）will be an important element in people’s daily life,and the second largest support industry compaired with the telecommunication business. this paper studies the participation of telecommunication department in constructing optical cable television,the technology of optical CATV,the system & network,and economy analysis.  
        关键词：optical cable television （CATV）;propagation;network configuration   
        2
        |
        29
        |
        0
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27502931 false
        发布时间：
      • Zhu Minghua,Huang Ying,Li Yanjie
        Issue 4, (1994)
        摘要：In the paper,the feature of new type filling gels used in optical fibre and cable is introduced. The oil sepatation rules of five kinds of filling gels are explored and discussed by testing the oil separations of these filling gels in several hundreds hrs or even over one thousand hours. the long-term oil separation feature of these filling gels is estimated and compared with each other.  
        关键词：oil separation feature;filling gels;optical fibre and cable   
        2
        |
        85
        |
        1
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27502849 false
        发布时间：
      • Issue 4, (1994)
        摘要：本文就光缆工程中遇到的外护套伤痕不明显，但光纤已断裂的情况进行了讨论。用光纤进行了模拟实验，给出了拉伸，压坏，折断等２６张较典型的断口端面的显微照片。对实际判断断裂原因提供一些有用的信息。  
        关键词：光纤;断裂;损伤   
        3
        |
        173
        |
        2
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27502890 false
        发布时间：
      • Ding Guoqing
        Issue 4, (1994)
        摘要：The measurement principle of the x ray double crystal diffraction is introduced in this paper. The positive and negative mismatch from the semiconductor thin layers with the heterostructures,the minibends of crystal chips, the symmetry on the rocking curves,the resolution of the complex curves,and interference fringes are discussed and analyzed.We show that it is important of the measuring results of x ray double crystal diffraction for MOCVD,LPE technology improvements.  
        关键词：semiductor heterostructure material;x ray double;crystal diffraction   
        2
        |
        153
        |
        1
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27502924 false
        发布时间：
      • Wu Zhengyin et. al
        Issue 4, (1994)
        摘要：Having been tested through speeding aging lifetest, it is proved that 1. 3μmInGaAsP/InP RWG structure laser diode has much higher reliability than BH structrue LD’s. It is tested under the conditions of ambient temperature of 50℃. 100mA CW and ambient temperature of 80℃、100mA CW.3 220 hours and almost 193 200 device hours are tested,no one is failed during the test period. Under such high strict conditions,its 50℃ extrapolated lifetime （MTTF） is 2×105 hours, and its statistics standard deviation σ= 1. 016; its 80℃ extrapolated lifetime （MTTF）is 3.8×104 hours,and its statistics standard deviation σ=0.804. From these two results we can get its failure activated energy Ea =0. 543 eV.Its predicted 25℃;C lifetime （MTTF）is 1.03×106 hours.  
        关键词：sepeiconductor lasers;reliability   
        3
        |
        68
        |
        0
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27502870 false
        发布时间：
      • Cao Jieyuan,Shao Qiang,Xu Ying
        Issue 4, (1994)
        摘要：An equipment for batch production of optical fiber couplers is presented. According to the arrangment in advance for technology parameters and optical power ratio,a monomode optical fiber coupler can be made automatically by fusing and tapering processes with the excess loss of less than 0. 2dB,power ratio error of less than 2% and end product rate of 90%.  
          
        3
        |
        229
        |
        23
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27502897 false
        发布时间：
      • Li Zongcheng
        Issue 4, (1994)
        摘要：To show anew the evolutional process of photosensitive materials, and bring the time process into the sphere of optical information processings,according to some experiment results,this paper sets forth the principles of non-linear oscillatory signals,and puts forward the optical information processing principles about the multiplier-periodic evolutional pictures on phodetotected planes.  
          
        3
        |
        21
        |
        1
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27502882 false
        发布时间：
      • Issue 4, (1994)
        摘要：武汉邮电科学研究院９１级硕士论文摘要［编者按］本专栏刊出武汉邮电科学研究院９１级硕士研究生的论文摘要。本刊编辑创正进一步组织论文作者，就其论文内容整理出精炼的文章，计划在今后几期内发表，供读者参考。ＤＳＩ—ＡＤＰＣＭ系统和语音信箱系统的研究研究生：毛...  
          
        2
        |
        26
        |
        0
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27502866 false
        发布时间：
      • Issue 4, (1994)
        摘要：《光通信研究》１９９４年总目次《光通信研究》1994年总目次...  
          
        2
        |
        18
        |
        0
        <HTML>
        <Meta-XML>
        <引用本文> <批量引用> 27502868 false
        发布时间：
      0