提出了应用二元计算全息(BCGH)的方法来设计和制作一种新型的衍射光学代码(DOC),并采用振幅补偿的方法来保证正确的可译性和实现高信噪比。还将其与S.J.Bever等人提出的相位整形方法制作的衍射光学条码(DOBC)的结果进行了比较,分析结果表明这种方法制作的DOC具有能完全正确解译、低恢复误差、高信噪比等特点。

A new type of diffractive optical code (DOC) using binary computer-generated hologram (BCGH) is presented. We introduce a new method of amplitude-compensated CGH to guarantee the DOC correctly decoded and to obtain higher signal-boise ratio. Compared with the phase-shaping method for diffractive optical bar code (DOBC), this DOC can yield substantially lower reconstruction error and higher efficiency. Computer simulation and optical experiment are reported.