基于单个纯相位空间光调制器的紧凑光学相关器。
Compact optical correlator based on one phase-only spatial light modulator.
机构信息
State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou, Zhejiang, 310027, China.
出版信息
Opt Lett. 2011 Apr 15;36(8):1383-5. doi: 10.1364/OL.36.001383.
An optical correlator that utilizes one phase-only spatial light modulator (SLM) combined with a mirror is proposed and demonstrated. This system is compressed by displaying the input and filter pattern on different parts of the same SLM. The background noise is separated from the correlation signal by superimposing a high-frequency carrier with the filter pattern except in the zero-frequency regions, which will improve the signal-to-noise ratio in pattern recognition. Our architecture is compact and the cost is relatively low by utilizing only one SLM.
提出并演示了一种利用单个纯相位空间光调制器（SLM）和一面镜子的光学相关器。该系统通过在同一 SLM 的不同部分显示输入和滤波器图案进行压缩。通过在滤波器图案上叠加高频载波，除了零频区域之外，将背景噪声与相关信号分离，从而提高模式识别中的信噪比。我们的架构紧凑，仅利用单个 SLM 可降低成本。
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