Abstract

The microgenetic algorithm is utilized in the design of dielectric grating structures. To our knowledge, this is the first time that a genetic algorithm has been demonstrated with a small population size, a mixed variable type, and an adaptive mutation scheme. A wide range of grating devices is optimized with the microgenetic algorithm to demonstrate its usefulness and efficiency in diffractive-optic components. Specific examples include fan-out phase gratings, antireflection grating surfaces, resonant fan-out devices, and cascaded grating structures. Conclusions and recommendations for additional efforts are also addressed for increasing the applicability and the convergence rates of the algorithm.

© 1995 Optical Society of America

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