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本文介绍了频域测试中用衰减置换法(ATT法)测量光纤的带宽。测量精度取决于电衰减器的精度。研制的ATT法测量装置具有整体性好等特点。给出了实际测量是数据及曲线。初步实验表明,本方法不失为光纤带宽频率测量的一种有效手段。
This article describes the frequency domain test using the attenuation replacement method (ATT method) to measure the bandwidth of the fiber. Measurement accuracy depends on the accuracy of the electrical attenuator. Developed ATT method measuring device has the characteristics of good integrity. The actual measurements are given as data and curves. Preliminary experiments show that this method can be an effective measure of fiber bandwidth frequency measurement.