最新刊期
      卷 ， 期 4 ， 1992
      • Wang Baotai
        Issue 4, Pages: 1-7(1992) DOI: 10.13756/j.gtxyj.1992.04.001
        摘要：The method of channel drop/Insert in the 565Mbit/s fiber-optic repeater is described in this paper. The circuitry was designed using computer simulation. An experiment was carried out to confirm the design. These circuit design and measurement method may be applied to 565Mbit/s fiber-optic line terminal equipment and repeater.  
        关键词：optical repeater;optical terminal;drop/insert multiplexer   
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        发布时间：2023-08-14
      • Wang Huanxin
        Issue 4, Pages: 8-15(1992) DOI: 10.13756/j.gtxyj.1992.04.002
        摘要：This paper describes a special transmission equipment providing transmission channels for the stored program control exchange called S1240. The equipment features low power consumption, high degree of integration, stable performance and low cost.  
        关键词：special optical terminal;SPC exchange   
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      • Ren Xingen Xu Guoping Dong Tianlin
        Issue 4, Pages: 16-24(1992) DOI: 10.13756/j.gtxyj.1992.04.003
        摘要：The development trend and characteristics of Subcarrier Multiplexed （SCM） optical fiber communication are summarized in this paper , The system performance and technical key points are also analyzed . Finally , the possible applications of the SCM optical fiber communication system to the video transmission , digital communication and broadband lightwave networks are proposed .  
        关键词：SCM;videotransmission;digital communication   
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        发布时间：2023-08-14
      • Wan Yanxiang Yao Shuiming
        Issue 4, Pages: 25-31(1992) DOI: 10.13756/j.gtxyj.1992.04.004
        摘要：This paper describes the longitudinal winding technique of steel tape, analyses the factors influencing the quality of formation of longitudinal winding. In order to reduce the steel tape elongation during the winding, an optimum winding angle was suggested.  
        关键词：longitudinal steel tape winding;central tube cable;die   
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        发布时间：2023-08-14
      • Issue 4, Pages: 31(1992) DOI: 10.13756/j.gtxyj.1992.04.005
        摘要：<正> 由邮电部科技司主持,来自17个单位的代表对武汉邮电科学研究院研制的、用于京汉广架空光缆先建段工程的光通信系统设备通过鉴定验收。会议技术组以严谨的工作作风,对全部设备进行了认真的测试,并对系统进行了24小时稳定观察和8小时高温测试等现场实验。代表们在讨论中,对该系统设备给予了充分的肯  
          
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        发布时间：2023-08-14
      • Chen Zhihao Cai Shengzhen He Zhixian
        Issue 4, Pages: 32-36(1992) DOI: 10.13756/j.gtxyj.1992.04.006
        摘要：In this paper, a typical ray trajectory expression in a conical GRIN rod lens is derived based on the variational method. It is shown that the ray trajectory depends strongly on the spot size and the inclination of the incident beam and the structure of the lens.  
        关键词：ray trajectory;graded index profile   
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        发布时间：2023-08-14
      • Issue 4, Pages: 36(1992) DOI: 10.13756/j.gtxyj.1992.04.007
        摘要：<正> 以邮电部科技司周继鑫副司长为首的鉴定委员会于1992年11月2～3日对武汉邮电科学研究院光纤光缆部的三项研究成果进行了技术鉴定。与会专家、教授和代表听取了有关研制人员所作的技术报告,并进行了现场检查。技术组对其性能指标进行了严格的测试,对图纸、资料进行了认真审查,经讨论后一致通过鉴定。具体情况如下:  
          
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      • Yang Xinmin Dong Zhijiang et al.
        Issue 4, Pages: 37-40(1992) DOI: 10.13756/j.gtxyj.1992.04.008
        摘要：With two-electrode structure,wave length tuning in single-mode operation was achieved for a DFB laser operating at 1.55nm. The overall cavity length is 250u.m. The isolation resistance is about 60Q. Under a constant total bias current, the lasing wavelength can be tuned electrically over 15 A （190GHz）. The side-mode suppression ratio （ SMSR ） is larger than 30dB.  
        关键词：two-electrode DFB laser;effective refractve index;injection carrier;tuning   
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      • Wu Zhongjun Yao Jian Liu Wujun
        Issue 4, Pages: 41-50(1992) DOI: 10.13756/j.gtxyj.1992.04.009
        摘要：A new structure optical fiber splice featuring reasability and quick splicing was developed. It consists of only two components and has small contour dimension. Its insertion loss is 0.173dB （average） for singlemode fiber and less than O.1dB for multimode fiber, respectively.  
        关键词：fiber splicing;insertion loss;single mode fiber;multimode fiber   
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      • Yin Zongmin
        Issue 4, Pages: 51-58(1992) DOI: 10.13756/j.gtxyj.1992.04.010
        摘要：The paper reviews the evolution of soliton research, and describes the soliton effect in optical fiber. In particular, it introduces the soliton equation and principle of soliton laser.  
        关键词：soliton;soliton propagation   
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        发布时间：2023-08-14
      • Issue 4, Pages: 59-58(1992)
          
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