The field-stitching method introduced previously [Opt. Lett. 21, 1508 (1996)] allows large-period gratings containing small-scale local structure to be analyzed without requiring excessive computing power. Multiple scattering and the polarization of the electromagnetic field are taken into account by standard rigorous analysis. A variety of calculations demonstrating the accuracy and the speed of the method are made. Also, we report on the optimization by simulated annealing of fan-out gratings with periods of up to 240λ and of diffractive cylindrical lenses with a period of 1200λ, which has been made possible by field-stitching analysis.
© 1997 Optical Society of America
[Optical Society of America ]
Ben Layet and Mohammad R. Taghizadeh, "Electromagnetic analysis of fan-out gratings and diffractive cylindrical lens arrays by field stitching," J. Opt. Soc. Am. A 14, 1554-1561 (1997)