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本文采用聚焦法,利用数字式选行器和采样保持器降低数据传输率,将光功率分布以电视视频信号的形式输入微型计算机,实现了预制棒折射率分布的自动化测量。
In this paper, focusing method is used to reduce the data transmission rate by digital selector and sample holder. The optical power distribution is input into the microcomputer in the form of TV video signal to realize the automatic measurement of refractive index distribution of preform.