“optical time domain reflectometer”的概念、定义、翻译、参考文献-科学参考

单词	optical time domain reflectometer
释义	optical time domain reflectometer Encyclopedia 工学光网络参数测试仪释 optical time domain reflectometer光时域反射计通过向被测光纤发送激光脉冲引起沿光纤的后向散射（瑞利散射）或光纤链路上有折射率变化节点处的反射，检测按时间顺序返回的光信号强度分布，并计算得到光纤长度与光纤损耗变化关系曲线的仪器。
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