Shatalin S V, Treschikov V N, Rogers A J
Appl Opt. 1998 Aug 20;37(24):5600-4. doi: 10.1364/ao.37.005600.
The technique of optical time-domain reflectometry is analyzed to determine the effect of an optical phase modulation on light backscattered in an optical fiber. It is shown that the spatial distribution along the fiber of an external phase modulation can be measured with a spatial resolution close to that of optical time-domain reflectometry. A distributed interferometric sensor arrangement that employs this technique is investigated experimentally, and a satisfactory interrogation of more than 1000 resolution intervals is demonstrated.
对光时域反射测量技术进行了分析，以确定光相位调制对光纤中背向散射光的影响。结果表明，外部相位调制沿光纤的空间分布可以用接近光时域反射测量的空间分辨率来测量。对采用该技术的分布式干涉传感器装置进行了实验研究，并展示了对1000多个分辨率区间的令人满意的询问。
