Engineered Planar Defects Embedded in Opals


  • This work is partially financed by the Comunidad Autónoma de Madrid though 07T/0048/2003 and Spanish MCyT through MAT 2003-01 237 projects. We gratefully acknowledge Florencio García-Santamaría for helpful discussions.


A method for the fabrication of engineered planar defects inside opals (see Figure) is presented. These defects act as photonic microcavities, introducing a localized state in the gap. The scalability of the defect allows for the tuning of the spectral position of the defect by changing the size of the defect relative to the periodicity of the lattice.