锥形光纤的偏振特性  

The Polarization Property of Tapered Fiber

作　　者：肖志刚[1] 祝生祥[1] 薛春荣[1] 

机构地区：[1]同济大学Pohl固体物理研究所,上海200092

出　　处：《应用光学》2004年第6期22-25,37,共5页Journal of Applied Optics

基　　金：国家自然科学基金(69877014)

摘　　要：　随着光通信技术的不断发展,光纤的应用越来越广泛,而锥形光纤以其独特的传光方式越来越多地应用于光纤连接、成像及测量等领域。实验测定了不同锥角和不同长度锥形光纤的偏振特性。理论上,根据麦克斯韦方程组以及边界条件给出了光在理想光纤中的场分布,阐明了实际光纤中光的传输特性。论证了锥形光纤长度与其偏振特性的关系,进而利用几何光学方法对锥形光纤锥角与其偏振特性的关系作了定性说明。并用具体数据进行了定量计算,得出偏振光经锥形光纤传输或耦合后再传输到其终端所得到均是椭圆偏振光的结论。Polarization properties of tapered fiber are discussed in this paper.By the Maxwell equation and boundary condition,the field distribution of ideal fiber is analyzed and the transmission property of the fiber is also explained. Further more, geometric optics treatment is convenient due to the relation between the length of tapered fiber and its polarization property. Through the experiments and analyses, we may draw the conclusion that the elliptic polarization light is obtained when linear polarization light transmits through the single mode fiber or after coupling.

关 键 词：锥形光纤 偏振特性 锥角 传输特性 耦合 

分 类 号：TN25[电子电信—物理电子学]