基于Mueller矩阵的糖溶液旋光度测量

Measurement of the optical rotation angle based on Mueller matrix

提出了基于Mueller矩阵的糖溶液旋光度测量方法。搭建了一个可旋转光纤波片的全光纤测量系统,此系统利用双锥形光纤对糖溶液旋光性进行探测。建立系统方程,利用最小二乘优化估计的方法求取待测溶液的Mueller矩阵;对Mueller矩阵进行极分解运算得到糖溶液的旋光度。实验测量了不同浓度的葡萄糖溶液和蔗糖溶液的旋光度,实验结果表明:此光纤系统可以很好地测量糖溶液的旋光度,而且随着葡萄糖和蔗糖溶液浓度的增加,旋光度呈负向线性增加,为后续通过旋光度测量糖溶液浓度提供了支持。与传统的测量方法相比,具有操作简单,可实现远程测量的优点。

In order to measure the optical rotation angle of glucose solution and sucrose solution ,a rotating wave‐plate polarimeter is established .The polarimeter is full fiber system and uses the fiber taper to probe the optical rotation of liquid .First ,through the establishment of system equations ,squares optimization is used to estimate the Mueller matrix of the solution under test ,and then ,using the Mueller matrix decomposition to calculate the optical rotation angle of the sugar solution .Then ,the optical rotation angles of glucose and sucrose solution at different concentration are measured by the experiment system .Results show that optical rotation angle linear increase with the increase of concentration of glucose and sucrose solution .Compared to the traditional measurement of optical rotation angel ,the systematic polarization alignment is not necessary in our system .Consequently ,the experimental operation is simple , and then the features make the system quite remote and feasible .It can satisfy the system requirements of higher precision .