单模光纤弯曲损耗的测量与分析

Bend loss measurement and analysis of single-mode fibers

提供了弯曲半径从1.7mm到5.8mm,波长从1520nm到1565nm范围内单模光纤弯曲损耗的测试结果。观察到了弯曲损耗呈震荡变化,随着弯曲半径的增加损耗减小,振幅减小,随着波长的增加损耗增加、振幅增大的现象,并利用光纤的耦合模理论对单模光纤弯曲损耗震荡进行了解释。

The measurements of the bend loss in singlemode fiber for the bend radius from 1.7mm to 5.8mm and the wavelengths from 1520nm to 1565nm are given. The oscillations of measurements are observed. The bend loss value and its oscillations decrease as the bend radius increases, while the bend loss value and the oscillation amplitude increase as the wavelength increases. An explanation for the bend loss oscillations by the coupling mode theory is given.