LOCALIZED MODES IN CHALCOGENIDE PHOTONIC MULTILAYERS WITH As-S-Se DEFECT LAYER

摘要

Interesting results on the development of localized modes due to a defect layer sandwiched between symmetrical multilayered 1-D photonic crystals have been reported. The number of resonant peaks increases with increases with the slab thickness. It is shown that the normalized frequency shifts to lower values with increasing selenium concentration of the defect layer. The frequency can be adjusted coarsely by changing the defect concentration. The spectral efficiency can be increased without increasing the total volume of the optical devices