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Optimal design of optical reference signals by use of a genetic algorithm

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Saez Landete, José and Salcedo Sanz, Sancho and Rosa Zurera, Manuel and Alonso Fernández, José and Bernabeu Martínez, Eusebio (2005) Optimal design of optical reference signals by use of a genetic algorithm. Optics Letters, 30 (20). pp. 2724-2726. ISSN 0146-9592

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Official URL: http://dx.doi.org/10.1364/OL.30.002724


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Abstract

A new technique for the generation of optical reference signals with optimal properties is presented. In grating measurement systems a reference signal is needed to achieve an absolute measurement of the position. The optical signal is the autocorrelation of two codes with binary transmittance. For a long time, the design of this type of code has required great computational effort, which limits the size of the code to ~30 elements. Recently, the application of the dividing rectangles (DIRECT) algorithm has allowed the automatic design of codes up to 100 elements. Because of the binary nature of the problem and the parallel processing of the genetic algorithms, these algorithms are efficient tools for obtaining codes with particular autocorrelation properties. We design optimum zero reference codes with arbitrary length by means of a genetic algorithm enhanced with a restricted search operator.


Item Type:Article
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© 2005 Optical Society of America.
This research was supported by the National Research Program project DPI2004-7334 and by a project of the Universidad de Alcalá (UAH PI2005/078).

Uncontrolled Keywords:Optics
Subjects:Sciences > Physics > Optics
ID Code:26731
Deposited On:25 Sep 2014 10:44
Last Modified:25 Sep 2014 10:44

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