Abstract
A real-time computer-aided optical intensity correlator using multiplexed Fresnel holographic filters (FHFs) and a liquid crystal television (LCTV) is described. This technique is characterized by the following. The spatially separated multichannel filters are fabricated by a single exposure holographic recording; the multiplexed optical correlator is simple in structure with low alignment requirements; the spatial phase variation existing inherently in the LCTV has no influence on the correlation pattern and the system has a higher discrimination by means of computer preprocessing. Several experimental results are presented.
Original language | English |
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Pages (from-to) | 19-24 |
Number of pages | 6 |
Journal | Optics Communications |
Volume | 86 |
Issue number | 1 |
DOIs | |
Publication status | Published - 15 Oct 1991 |