Full-wave Electromagnetic Optimizations of Photonic Crystals Involving Dielectric Rods

Eray H., Karaosmanoglu B., ERGÜL Ö. S.

Progress in Electromagnetics Research Symposium - Fall (PIERS - FALL), Singapore, Singapore, 19 - 22 November 2017, pp.2871-2875 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Singapore
  • Country: Singapore
  • Page Numbers: pp.2871-2875
  • Middle East Technical University Affiliated: Yes


We consider full-wave optimizations of photonic crystals (PhCs) involving dielectric rods to obtain desired output patterns for given excitations. Starting from a full grid, each rod is kept or extracted in order to maximize the power density at different output locations. PhCs are modeled as three-dimensional structures, which are analyzed via surface integral equations and the multilevel fast multipole algorithm, in order to investigate realistic problems without resorting to infinite-length assumptions. MLFMA is integrated into genetic algorithms that enable flexible cost functions for the optimizations. Numerical results involving different structures demonstrate the capabilities of the optimization environment.