سال انتشار: ۱۳۸۶

محل انتشار: پانزدهیمن کنفرانس مهندسی برق ایران

تعداد صفحات: ۵

نویسنده(ها):

Zarei – School of Electrical Engineering, University of Tehran,Iran
Shahabadi – School of Electrical Engineering, University of Tehran,Iran
Mohajerzadeh – School of Electrical Engineering, University of Tehran,Iran

چکیده:

Large relative higher-order stop bands are realized in two-dimensional photonic crystals of a square lattice using a genetic algorithm. In this procedure, the unit cell is divided into a grid of square pixels. A binary chromosome is then assigned to eachfilling pattem of the pixels. Afast plane-wave expansion technigue l’s used for calculating the band structure fo, each chromosome. As a result of the optimization, a structure showing a relative higher-order bandgap as large as i,1.41% is obtained, which is larger than the so far reported values for higherorder bands.