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对光学波长通过一根内表面具有镜面光洁度的空心钢管的传输进行了研究。合适的管道内径为1英寸,公差为±3毫厘,表面为银质。它可以承载大量通讯通道,每个通道的典型脉冲基带宽度(针对10英里间距的再生中继器)为200兆赫,每英里的衰减,考虑到半英里半径的弯曲,为2½dB/mi。机械要求涉及的构造问题似乎十分简单。
C.C. Eaglesfield (Mon,) 研究了这个问题。
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