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Optimization of Photonic Nanostructures by Walter R. Frei; H.T. Johnson; Daniel A. Tortorelli is a Engineering article available to read on EtoBox.

What is Optimization of Photonic Nanostructures about?

A Geometry Projection Method (GPM) for the optimization of photonic crystal nanostructures is used to improve the performance of two different photonic devices. The GPM is a level set based approach for defining a differentiable expression describing the material distribution of a structure. It gives direct control over areas of intermediate dielectric constant and implicit control over feature size, both key concerns for the design of nano-scale devices. The GPM, in conjunction with the finite element and adjoint methods, is used here to solve two different non-linear optimization problems. The diffraction from a two-dimensional photonic crystal waveguide termination is reduced, and the reflectivity of a three-dimensional photonic crystal laser cavity structure is increased. Significant improvements in both cases demonstrate that the GPM is an effective tool for optimization of photonic structures.

Who reads Optimization of Photonic Nanostructures?

Author

Walter R. Frei; H.T. Johnson; Daniel A. Tortorelli

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0045-7825)

Published

2008

Language

EN

Field

Engineering (Physical Sciences)