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Compact Incoherent Image Differentiation with Nanophotonic Structures
ACS Photonics ( IF 7 ) Pub Date : 2020-01-27 , DOI: 10.1021/acsphotonics.9b01465
Haiwen Wang , Cheng Guo , Zhexin Zhao , Shanhui Fan

There are significant recent interests in using nanophotonic structures to perform differentiation operation on images for edge detection purposes. All previous works using nanophotonic structures, however, can only operate with coherent light. Here we introduce a hybrid optoelectronic approach that enables one to use nanophotonic structures to perform differentiation operation with incoherent light. As a demonstration, we consider a photonic crystal slab structure and show that differentiation operation with incoherent light can be achieved by subtracting the optical transfer function of the structure at two different frequencies. Our method is robust to noise and directly integrable into existing imaging systems and, thus, points to a new avenue for improving image sensors using nanophotonic structures.

中文翻译:

具有纳米光子结构的紧凑非相干图像区分

最近,对于使用纳米光子结构在图像上执行微分操作以进行边缘检测非常感兴趣。但是,以前所有使用纳米光子结构的作品都只能在相干光下工作。在这里,我们介绍了一种混合光电方法,该方法使人们能够使用纳米光子结构对不相干的光执行微分操作。作为演示,我们考虑了光子晶体的平板结构,并表明可以通过在两个不同的频率上减去结构的光学传递函数来实现不相干光的微分操作。我们的方法对噪声具有鲁棒性,并且可以直接集成到现有的成像系统中,因此为使用纳米光子结构改善图像传感器提供了新途径。
更新日期:2020-01-29
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