| 生物光盘系统参数对输出信号的影响研究 |
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| 引用本文： | 王琳,冯莹.生物光盘系统参数对输出信号的影响研究[J].光学与光电技术,2009,7(6):85-89. |
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| 作者姓名： | 王琳 冯莹 |
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| 作者单位： | 国防科学技术大学光电科学与工程学院,湖南长沙,410073 |
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| 摘 要： | 以Hopkins光盘标量衍射理论为基础，建立了生物光盘系统理论分析模型，根据生物光盘的工作特点，研究了光学系统参数、传感单元尺寸参数对系统输出信号的影响。计算结果表明，为实现较高的传感灵敏度，理想情况下聚焦光斑直径与方形传感单元最佳长、宽的匹配关系需满足1：0．5665。选取数值孔径NA=0．07，高斯参数σ最佳取值为0．7，此时矩形传感单元最佳尺寸为4．3μm×4．3μm，并给出了理想情况下输出光功率最小值只与传感单元高度的线性关系。
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| 关 键 词： | 光存储器 生物光盘 标量衍射 参数分析 |
Effect of Parameters of the Bio-CD Systems on the Output Signal |
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| WANG Lin,FENG Ying.Effect of Parameters of the Bio-CD Systems on the Output Signal[J].optics&optoelectronic technology,2009,7(6):85-89. |
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| Authors: | WANG Lin FENG Ying |
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| Institution: | ( College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China ) |
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| Abstract: | The theoretical analysis model of Bio-CD is founded on the basis of simulation based on the scalar diffraction theory. According to the characteristics of Bio-CD, we analyze the effect of NA, Gaussian parameter and the sizes of the sensing cell on the detector＇s output signal. The computational results show that NA--0.07, σ=0.5, α=β=4. 3 μm are the best choices of high sensitivity of detecting the concentration of the biological molecular. We obtain the linear relationship between output minimal signal and the height of the sensing cell. |
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| Keywords: | optical memory biological compact disk scalar diffraction theory parameter analysis |
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