All-optical digital-to-analog conversion using pulse pattern recognition based on optical correlation processing
All-optical digital-to-analog conversion using pulse pattern recognition based on optical correlation processing
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DOI：
10.1364/opex.13.010310
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发表时间：
2005-12
期刊：
影响因子：
3.8
通讯作者：
T. Nishitani;T. Konishi;H. Furukawa;K. Itoh
中科院分区：
文献类型：
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作者：
T. Nishitani;T. Konishi;H. Furukawa;K. Itoh
我们提出并证明了一种新的全光数模（D/A）转换器使用基于光学相关处理的脉冲模式识别。它由基于相关处理的脉冲模式识别和利用光衰减器的强度调节组成。我们通过使用目标数字信号和准备的相关滤波器函数之间的相关处理来获得作为脉冲模式识别的结果的单个脉冲。通过适当的强度调节，可以将获得的单脉冲作为相应的模拟信号迅速地馈送到输出端口。实验结果表明，该转换器可以成功地将间隔为1.65ps的四位数字信号转换为与输入数字信号相对应的模拟信号。
We propose and demonstrate a novel all-optical digital-to-analog (D/A) conversion using pulse pattern recognition based on optical correlation processing. It is composed of pulse pattern recognition based on correlation processing and intensity adjustment using an optical attenuator. We obtain a single pulse as a result of pulse pattern recognition by using correlation processing between a target digital signal and a prepared correlation filter function. The obtained single pulse can be promptly fed to an output port as a corresponding analog signal through adequate intensity adjustment. Experimental results show that four-bit digital signals with 1.65ps interval can be successfully converted to analog signals corresponding to input digital signals.