与近场、远场测量法不同，以计算全息法制作高斯拉盖尔函数空间匹配滤波器，并用光学信息处理方法测量单模光纤中的场分布，很容易测得以高斯拉盖尔函数作为正交基元函数进行展开的各项系数，并能方便地得到该函数的解析表达式，其结果是非常接近于本文所用被测光纤的实际场分布。 Different from the near-field and far-field measurement methods, Gaussian Laguerre space matched filter is made by the method of computational holography, and the field distribution in single-mode fiber is measured by optical information processing method. It is easy to measure Gaussian Laguerre function as positive Pairs of primitive functions to expand the various coefficients, and can easily get the analytic expression of the function, the result is very close to the actual field distribution of the measured fiber used in this article.