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Fourier transforms of phase objects and implications for optical correlators
Author(s) -
McClain John L.,
Gregory Don A.
Publication year - 2000
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(20000620)25:6<406::aid-mop13>3.0.co;2-m
Subject(s) - fourier transform , phase (matter) , amplitude , optics , microwave , physics , fourier optics , computer science , telecommunications , quantum mechanics
Spatial light modulators used as inputs to optical correlators often modulate both the amplitude and phase of coherent illumination. This means that matched filters that are commonly used are not truly matched to the scenes displayed on these modulators. Filters are normally calculated from an assumed amplitude‐only input. A few analytically manageable examples of Fourier transforms of phase objects are given which demonstrate the errors that can occur, and suggestions are made for using the phase‐modulating characteristics to an advantage. © 2000 John Wiley & Sons, Inc. Microwave Opt Technol Lett 25: 406–412, 2000.