Achieving Complete Band Gaps Using Low Refractive Index Material

Increased interest has been focused on fabricating three dimensional (3D) photonic crystals (PCs) in order to obtain CBGs. Theoretical analysis showed that although CBGs can be obtained by diamond structure, a strict condition should be satisfied, i.e., the modulation of the refractive index of the material used should be larger than 2.0. Therefore, attention was paid to finding the materials with...