1. Effects and correction of magneto-optic spatial light modulator phase errors in an optical correlator
- Author
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Butler Hine, Max B. Reid, and John D. Downie
- Subjects
Physics ,Spatial light modulator ,genetic structures ,business.industry ,Materials Science (miscellaneous) ,Phase (waves) ,Binary number ,Filter (signal processing) ,eye diseases ,Industrial and Manufacturing Engineering ,symbols.namesake ,Optics ,Fourier transform ,Optical correlator ,symbols ,Business and International Management ,Optical filter ,business ,Magneto - Abstract
Here we study the optical phase errors introduced into an optical correlator by the input and filter plane magneto-optic spatial light modulators. We measure and characterize the magnitude of these phase errors, evaluate their effects on the correlation results, and present a means of correction by a design modification of the binary phase-only optical-filter function. The efficacy of the phase-correction technique is quantified and is found to restore the correlation characteristics to those obtained in the absence of errors, to a high degree. The phase errors of other correlator system elements are also discussed and treated in a similar fashion.
- Published
- 1992
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