摘要
基于分数傅里叶变换的新型牛顿环实验仪有别于原有的基于数环法的实验仪,该实验仪从信号机理出发,揭示了牛顿环的Chirp信号本质,创造性地将分数傅里叶变换引入牛顿环实验中,实现对透镜曲率半径等物理参数的高精度测量,为大学物理等厚干涉实验提供了一个新的视角,可拓宽学生视野,激发其创新性思维。
The novel Newton's rings experiment instrument using fractional Fourier transform is different from the traditional experiment instrument using fringe counting method.This kind of Newton's ring experiment instrument reveals the essence of the chirp signal of Newton's rings based on the signal characteristics,creatively introduces fractional Fourier transform into the Newton's ring experiment,and makes high-precision measurement of the curvature radius and other physical parameters of lens.The method of the instrument provides a new perspectiveon the equal thickness interference experiment of university physics,it can also broaden students'horizons and stimulate innovative thinking.
作者
鲁溟峰
武进敏
杨文明
张峰
陶然
Lu Mingfeng;Wu Jinmin;Yang Wenming;Zhang Feng;Tao Ran(Beijing Institute of Technology,Beijing,100081,China;Beijing Information Science&Technology University,Beijing,100101,China;Shanghai Jiao Tong University,Shanghai,200240,China)
出处
《中国现代教育装备》
2021年第17期57-61,共5页
China Modern Educational Equipment
基金
北京理工大学实验室研究项目“基于单幅无载波干涉条纹的光纤端面检测仪研制”(编号:2019BITSYA12)
北京理工大学校级重点项目“以本科为核心的新工科专业‘智能信号与信息处理+’型拔尖创新人才培养模式与实践”(编号:2020CGJG007)
北京高等教育本科教学改革创新项目“明辨思维型泛工科融合创新人才培养模式探索实践”(201910007004)
北京理工大学校级重点项目“工科学生技术沟通能力的培养探索”(编号:2020CGJG009)。
关键词
牛顿环
分数傅里叶变换
数环法
曲率半径
Newton's rings
fractional fourier transform
fringe counting method
curvature radius
