【摘要】 采用实验方法测量了球形光纤与楔形光纤的耦合效率,得出耦合效率随楔形光纤的楔角及球形光纤弓形高变化曲线。通过实验可得,楔形与球形光纤的耦合效率随楔角增加而增大,当楔角由20.6°增大到30.3°以及楔角由40.6°增大到55.2°时,耦合效率曲线呈较快速上升趋势,由30.3°增大到40.6°以及楔角由55.2°增大到76.5°时,耦合效率曲线上升趋势较缓;随着球形光纤弓形高的增加,球形与楔形光纤的耦合效率基本上线性上升;耦合效率随着楔形与球形光纤的间距的减小而增大,当间距由0.09mm减小到0.05mm时,耦合效率曲线呈较快速上升趋势,由0.04mm减小到0.01mm时,耦合效率曲线呈下降趋势。更多还原

【Abstract】 The coupling efficiency of spherical fibre optics and wedge-shaped fibre optics is measured by the experimental method.The curve reflecting that the coupling efficiency of fibre optics changes with the wedge angle of wedge-shaped fibre optics and the sagita of spherical fibre optics is given.By the experiments,the coupling properties had been analyzed and compared.It had been shown that coupling efficiency between a spherical fibre optics and a wedge-shaped fibre optics increases with the increase of wedge angle,the curve of the coupling efficiency assumes a quick uptrend by varying the wedge angle from 20.6° to 30.3° and from 40.6° to 55.2°,The curve of the coupling efficiency assumes a mitigative uptrend by varying the wedge angle from 30.3° to 40.6° and from 55.2°to 76.5°;coupling efficiency between the spherical and wedge-shaped fibre optics linearly increases with the increase of sagita of spherical fibre optics;coupling efficiency increases with the decrease of the distance between wedge-shaped and spherical fibre optics.The curve of the coupling efficiency assumes a quicker uptrend by varying the distance from 0.09mm to 0.05mm,the curve of the coupling efficiency assumes a downtrend by varying the distance from 0.04mm to 0.01mm.更多还原