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设计了基于光纤白光干涉测量技术的折射率测量仪,用来测量尺寸较小、形状简单的透光材料折射率。与传统折射率检测方法相比较,光纤折射率测量仪具有设备尺寸小、测量精度高、操作简易、便于携带等优点。实验测得某种石英玻璃的折射率值为1.464,与标准值偏差为0.02,误差为1.4%;测得某种普通玻璃的折射率为1.502,与标准值偏差为0.002,误差为0.1%;测得K9玻璃的折射率为1.507,与标准值偏差为0.009,误差为0.6%。
A refractive index measuring instrument based on optical fiber white light interferometry is designed to measure the refractive index of light-transmitting materials with small size and simple shape. Compared with the traditional refractive index detection method, the optical fiber refractive index measuring instrument has the advantages of small equipment size, high measuring precision, easy operation and portability. The experiment shows that the refractive index of a quartz glass is 1.464, the deviation from the standard value is 0.02 and the error is 1.4%. The refractive index of some common glass is 1.502, with the standard deviation of 0.002 and the error of 0.1%. K9 glass measured refractive index of 1.507, with the standard deviation of 0.009, the error of 0.6%.