| 计算机制全息图的二值化噪声及取样影响 |
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| 引用本文： | 龙品,陈柏刚.计算机制全息图的二值化噪声及取样影响[J].光学学报,1992,12(7):37-641. |
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| 作者姓名： | 龙品 陈柏刚 |
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| 作者单位： | 北京邮电学院应用物理系 北京100088
(龙品，陈柏刚，刘杰)，北京邮电学院应用物理系 北京100088(徐大雄) |
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| 基金项目： | 国家自然科学基金，邮电部青年科学基金资助的项目 |
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| 摘 要： | 对用于超大规模集成电路光学互连的计算机制全息图(CGH)的量化噪声及取样影响进行了分析.CGH透过率函数的二值化将带来一些噪声,但仍可得到高的信噪比.在光学互连CGH的结构是菲涅耳波带片的条件下,对Nyquist和Whittaker-Shannon两种取样方法进行了分析和比较.结果表明,在小偏转角和高取样频率条件下,用Whittaker-Shannon取样方法得到的衍射效率比用Nyquist取样方法所得到的衍射效率大.
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| 关 键 词： | 计算机 全息图 二值比 噪声 |
| 收稿时间： | 1991/4/30 |
Binarlzing distortions and sampling effects of computer generated hologram |
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| LONG PIN CHEN BAIGANG LIU JIE Xu DAXIONG.Binarlzing distortions and sampling effects of computer generated hologram[J].Acta Optica Sinica,1992,12(7):37-641. |
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| Authors: | LONG PIN CHEN BAIGANG LIU JIE Xu DAXIONG |
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| Abstract: | The binarizing distortions and sampling effects of computer generated hologram (OGH) for optical interconnection of very large scale integrated circurts (VLSI) are analyzed. Binarization of transmittance function of OGH will bring some noises but high signal-noise-ratio in detector plane will be achieved. Two kinds of sampling methods, Nyqulst sampling and Whittaker-Shannon sampling are analyzed and compared, in the condition that CGH in the form of Fresnel zone plate is employed as diffractive or reflective optical interconnection element. |
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| Keywords: | computer generated hologram optical interconnection |
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