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发明名称
摘要
PURPOSE:To increase S/N and to reduce the error rate at long distance transmission, by making present light to either of the both fibers at all times, through the transmission of signal in different condition by use of two optical fibers.
申请公布号
JPS5748902(B2)
申请公布日期
1982.10.19
申请号
JP19770023956
申请日期
1977.03.07
申请人
发明人
分类号
H04L1/22;H04B10/2507
主分类号
H04L1/22
代理机构
代理人
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地址
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