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。
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.
出处
《科技导报》
CAS
CSCD
北大核心
2011年第10期57-59,共3页
Science & Technology Review
基金
国家自然科学基金项目(69877014)
湖北省高等学校省级教学研究项目(2003298)
