MICROGENETIC-ALGORITHM OPTIMIZATION METHODS APPLIED TO DIELECTRIC GRATINGS

The microgenetic algorithm is utilized in the design of dielectric gra ting structures. To our knowledge, this is the first time that a genet ic algorithm has been demonstrated with a small population size, a mix ed variable type, and an adaptive mutation scheme. A wide range of gra ting devices is optimized with the microgenetic algorithm to demonstra te its usefulness and efficiency in diffractive-optic components. Spec ific examples include fan-out phase gratings, antireflection grating s urfaces, resonant fan-out devices, and cascaded grating structures. Co nclusions and recommendations for additional efforts are also addresse d for increasing the applicability and the convergence rates of the al gorithm.