摘要
采用直接对倾斜刀口成像的方法测量光锥与CCD耦合器件的调制传递函数 这种方法对静止刀口成像,利用刀口与光锥纤维列间的一定倾斜角度,在垂直于刀口的不同行之间形成不同的值,代替了传统刀口扫描中的扫描装置,并无需保证刀口与阵列的平行,相应地减小了测量误差在数据处理中采用了二次平均法,即对同一幅图像得出的不同位置值进行平均及多次测量结果平均。
A method that imaged directly to sloping edge was used to get the modulation transfer function of fiber optic taper coupled with CCD. It used static edge that was tilted slightly with respect to the columns of fibre to achieve different value of different row. This method replaced scanning in conventional test and it was not necessary to ensure that edge was parallel strictly to array. Thus mechanical error was deduced accordingly. In data processing adopting two averages including different position of one image and multi-measurement result. This processing avoided the influence of non-isoplanantic result from dispersancy to a certain extent.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2005年第4期613-615,共3页
Acta Photonica Sinica
基金
国家 863计划基金资助项目
关键词
调制传递函数
耦合器件
刀口像
Modulation transfer function
Coupled device
Edge image
