The modeling and the optimization of a grating optical low-pass filter

被引：13

作者：

Go, CS ^{[1
]}

Lim, S ^{[1
]}

Kim, S ^{[1
]}

Lee, JC ^{[1
]}

Oh, YH ^{[1
]}

机构：

[1] Wonkwang Univ, Div Phys & Semicond, Chonju 570749, South Korea

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2001年 / 73卷 / 07期

关键词：

Approximation theory - Light transmission - Low pass filters - Mathematical models - Optical filters - Optical transfer function - Refractive index;

D O I：

10.1007/s003400100678

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Through the one-dimensional analysis of the diffraction of a phase grating, we calculated the optical transfer function (OTF) of a phase grating. By a 0th-order approximation of the optical transfer function, we analyzed the feasibility of using it as a spatial frequency filter and obtained the structure of a grating for the optimum-filtering characteristics. The OTF of a phase grating as an optical low-pass filter is optimal when the incoming light is equally divided into three beams. The distance of those beams must be equal to the pixel size. The theoretical development was verified through an experiment.

引用

页码：721 / 725

页数：5

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