Joint transform correlator for optical temporal signals |
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Authors: | Shabtay G Mendlovic D Zalevsky Z |
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Affiliation: | Faculty of Engineering, Tel Aviv University, 69978 Tel Aviv, Israel. |
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Abstract: | Correlation is considered to be a fundamental operation in the field of signal processing. The fact that this operation can be implemented optically in a relatively simple manner is an important advantage of utilizing optical systems for signal processing. The VanderLugt 4-f system and the joint transform correlator (JTC) are the two most popular configurations for performing a spatial correlation operation optically. So far the JTC architecture has been used for performing correlation between two images, which are illuminated by a quasi-monochromatic light source. We propose a generalization of the JTC that performs a correlation between two temporal optical signals. |
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