摘要
针对像素不匹配的数字全息存储器中出现的莫尔条纹现象,提出了利用莫尔条纹进行全息存储光路精确调整来实现像素匹配的方法.通过对CCD像面图像中莫尔条纹的周期和角度进行分析,得到光学系统需要的精确调整参数.实验中,实现了空间光调制器和光电耦合器阵列512×512像素的1∶1像素匹配,该方法能提高读取速度并降低误码率.
According to the phenomenon of Moiré Fringe from the pixel-mismatch digital holographic storage,a precise assemble method is proposed to achieve accurate pixel-match.Based on analyzing the angle and cycle of Moiré Fringe from the CCD image,some relation parameters can determined to adjust the location of optical and mechanical parts for the holographic optical system.Then an optical system is completed to realize 1∶1 pixel-match of 512×512 between spatial light modulator and CCD.This method can improve reading speed and reduce the data error rate of holographic storage system.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2009年第11期2972-2974,共3页
Acta Photonica Sinica
基金
国家自然科学基金(69977005)
中国传媒大学校基金(YNG0608)资助
关键词
数字全息存储
莫尔条纹
傅里叶变换镜头
放大率
Digital holographic storage
Moire Fringe
Fourier transform lens
Magnification
