We study analytically the optical properties of several types of defect in Bragg multiple-quantum-well structures. We show that a single defect leads to two local polariton modes in the photonic bandgap. These modes lead to peculiarities in reflection and transmission spectra. Detailed recommendations for experimental observation of the effects studied here are given.
© 2000 Optical Society of America
Lev I. Deych, A. Yamilov, and A. A. Lisyansky, "Polariton local states in periodic Bragg multiple-quantum-well structures," Opt. Lett. 25, 1705-1707 (2000)