摘要
借用常规光学传递函数与系统脉冲响应构成一组傅里叶变换对的关系,对菲涅耳衍射系统的脉冲响应直接实施光学分数傅里叶变换,获得了该系统分数光学传递函数的数学表达形式,阐述了其物理意义,证明了常规傅里叶变换下的光学传递函数为该分数光学传递函数的特例,对分析系统传输光信息的整体效应具有指导作用.
Based on Fourier transform pairs of routine optical transfer function and impulse response of system, this paper carried out optical fractional Fourier transform to impulse response of Fresnel diffraction, deduced mathematic expression of the fractional optical transfer-function in this system, elaborated it＇s physical meaning and proved that routine transfer function is special case of fractional transfer function. It is use to analyze entirety effect of system transmission.
出处
《山西师范大学学报（自然科学版）》
2007年第1期57-59,共3页
Journal of Shanxi Normal University(Natural Science Edition)
基金
山西省自然科学基金项目资助(20011005)
关键词
菲涅耳衍射
脉冲响应
分数光学传递函数
fresnel diffraction
impulse response
fractional optical transfer function
