论文标题
测量绝对半径，折射率和长缸的分散
Measurement of absolute radius, refractive index and dispersion of a long cylinder
论文作者
论文摘要
长圆柱体（例如光纤）是一些使用最广泛的光子设备。因此，这些纤维的半径和折射率是确定其性能的根本重要参数。我们已经开发了一种方法来确定长圆柱体的绝对半径，折射率和色散的色散，仅使用其周围围绕两个不同极化的围绕圆周的耳语画廊的共振波长。由于此方法仅需要测量共振波长，因此它是无损的，并且可以使用标准设备进行。作为概念验证，我们在$125μm$ $的光纤上演示了该方法，以及$80μm$ borosilicate毛细管毛细管纤维，墙壁厚厚，可获得直径的值和折射率，精度为$ 2 nm $和$ 2 nm $和$ 2 \ tims 10^{ - 5} $。
Long cylinders, such as optical fibers, are some of the most widely used photonic devices. The radius and refractive index of these fibers are therefore fundamentally important parameters in determining their performance. We have developed a method to determine the absolute radius, refractive index, and chromatic dispersion of a long cylinder using only the resonance wavelengths of the whispering gallery modes around its circumference for two different polarizations. Since this method only requires the measurement of resonance wavelengths, it is non-destructive and it can be performed using standard equipment. As a proof-of-concept, we demonstrate the method on a $125μm$ optical fiber and an $80μm$ borosilicate capillary fiber with thick walls, obtaining values for the diameter and the refractive index with an accuracy of $2 nm$ and $2\times 10^{-5}$, respectively.
