基于变曲率透镜的四纤光纤准直器的设计  

Design of Four-fiber Collimator Based on a Variable-curvature Lens

作　　者：张明[1] 魏震[1] 乐孜纯[1] 

机构地区：[1]浙江工业大学理学院,杭州310023

出　　处：《光电工程》2011年第6期84-88,共5页Opto-Electronic Engineering

基　　金：国家自然科学基金资助项目(61007031);浙江省重大科技专项(2009C11051)

摘　　要：为实现一种新型的ROADM,设计了基于四纤光纤头和变曲率球面透镜的四纤光纤准直器。变曲率球面透镜包括斜柱体和变曲率球体两部分;4根尾纤在同一平面内等距排列,各尾纤出射光对应曲率不同的球面,可保证准直器出射光的出射角度满足应用要求。各尾纤出射面位于透镜的物方焦点处,从而使从光纤出射的光束获得准直。利用矩阵光学理论,设计出四纤光纤准直器球面半径、透镜长度等结构参数。利用RSOFT模拟了光场在此器件中的传播,得到光束的能量集中度大于90%。A four-fiber collimator based on four-fiber header and a variable-curvature lens has been developed for a novel Reconfigurable Optical Add-Drop Multiplexer（ROADM）.The variable-curvature surface consists of two spheres.The four fibers are arranged equidistantly and parallelly in one plane,then four light rays from the fibers pass through different part of the lens so that the angle of output light from the collimator can satisfy the application requirement.When the output facets of fibers are at the object focus of the variable-curvature lens,the light emitted from the fiber could be collimated.By using matrix optics method,the structure parameters of the four-fiber collimator,such as spheric radius and lens length,were obtained.The propagation of light field in the device was stimulated by RSOFT,from which energy concentration over 90% come under observation.

关 键 词：矩阵光学 光纤准直器 变曲率透镜 可重构光分插复用器(ROADM) 

分 类 号：TN253[电子电信—物理电子学]