Broadband near-infrared fibers dispersion measurement using white-light spectral interferometry
Broadband near-infrared fibers dispersion measurement using white-light spectral interferometry
复制标题
使用白光光谱干涉仪进行宽带近红外光纤色散测量
DOI：
10.1016/j.optcom.2009.08.005
复制
发表时间：
2009
影响因子：
2.4
通讯作者：
C. Radzewicz
中科院分区：
文献类型：
--
作者：
T. Kardaś;C. Radzewicz
本文提出了一种在近红外波段测量光纤有效折射率、群折射率和色散的新方法。该方法是基于白光光谱干涉，利用不平衡迈克尔逊干涉仪。通过将余弦函数直接拟合到低分辨率光谱仪记录的光谱干涉图案来获得有效折射率。该方法已在1000- 1700 nm的光谱范围内进行了测试，与标准的电信光纤和光子光纤的样品。色散测量的精度（0.16psnm·km）超过了以前报道的近红外白光光谱干涉法。
A new technique for an experimental determination of the effective refractive index, group refractive index and dispersion of fibers in a broad near-infrared spectral range is presented. The method is based on a white-light spectral interference which utilizes an unbalanced Michelson interferometer. The effective refractive index is obtained by a direct fitting the cosine function to the spectral interference pattern recorded by a low resolution spectrometer. The method has been tested in the spectral range of 1000–1700nm both with standard telecommunication fibers and a sample of a photonic fiber. The accuracy of dispersion measurement (0.16psnm·km) exceeds those from the previously reported near-infrared white-light spectral interference methods.