论文部分内容阅读
光导纤维的折射率分布是决定多模光纤传输带宽的一项重要参数.一个合理的折射率分布可使光导纤维具有很高的传输带宽.为了测定光导纤维的折射率分布,近年来国内外开展了大量的工作,并提出了十种以上的方法.在这些方法中,纵向干涉法被认为是测量分辨精度最高的一种,可以作为一种标准的测量方法.但它有样品制备麻烦,调试周期较长的缺点.近场法和反射法,虽然精度不高,但有样品制备简便,测试快速的优点,在光纤的常规测试及工艺重复性监测
Optical fiber refractive index distribution is to determine the transmission bandwidth of multimode fiber is an important parameter.A reasonable refractive index distribution allows the optical fiber with a high transmission bandwidth.In order to determine the optical fiber refractive index distribution in recent years at home and abroad to carry out A great deal of work has been done and more than ten methods have been proposed, of which longitudinal interferometry is considered as one of the most accurate measurement resolution methods and as a standard measurement method, but it has troublesome sample preparation, debugging The shortcomings of longer cycle.NAR method and reflection method, although the accuracy is not high, but the sample preparation is simple, fast test the advantages of fiber in the routine testing and process repeatability monitoring