球形与锥形光纤探针耦合特性的研究  

Coupling Properties of the Optical Fiber with Sphere and Taper

作　　者：杨修文[1] 

机构地区：[1]郧阳师范高等专科学校物理系,湖北丹江口442700

出　　处：《光电子技术》2010年第3期164-167,共4页Optoelectronic Technology

基　　金：国家自然科学基金资助项目(69877014);湖北省教学研究资助项目(2003298)

摘　　要：用实验方法测量了球形与锥形光纤的耦合效率随球的弓形高及锥形光纤圆锥角的变化关系,作出耦合效率曲线,通过测定耦合效率的实验可知:球形与锥形光纤的耦合效率随球的弓形高增加而基本上线性上升,随着锥形光纤圆锥角的增加而增大,在锥角由10.3°增大到54.6°时,耦合效率曲线呈较快的上升趋势;在锥角由54.6°增大到71.3°时,耦合效率曲线上升趋势较缓;随着球形与锥形光纤的间距的减小而增大,在间距由0.10 mm减小到0.03 mm时,耦合效率曲线呈较快的上升趋势;在间距由0.03 mm减小到0.02 mm时,耦合效率曲线上升趋势较缓。The coupling efficiency of fiber-optic probe with sphere and taper is measured, relationship between which is given versus sagitta of sphere and tapered fiber cone angle changes. The coupling efficiency curve is proposed. The coupling efficiency of fiber-optic probe with sphere and taper increases linearly as the increase of sagitta and as the increase of tapered fiber cone angle. The curve of the coupling efficiency assumes quicker uptrend when varying the wedge angle from 10. 3° to 54.6°, while uptrend is slow when the wedge angle is from 54.6° to 71.3°. On the contrary, the coupling efficiency increases as distance decreases between spherical and tapered fiber： when the distance is decrease from 0.10 mm to 0. 03 mm, the curve uptrend is tough; when the distance is decreased from 0.03 mm to 0.02 mm, the uptrend is slow.

关 键 词：锥形光纤探针 耦合效率 锥角 弓形高 

分 类 号：TN253[电子电信—物理电子学]