It is shown that it is possible to significantly modify optical spectra of Bragg multiple quantum well structures by introducing wells with different exciton energies. The reflection spectrum of the resulting structures is characterized by high contrast and tuning possibilities.
@article{arxiv.cond-mat/0307749,
title = {Spectral engineering with multiple quantum well structures},
author = {L. I. Deych and M. V. Erementchouk and A. A. Lisyansky},
journal= {arXiv preprint arXiv:cond-mat/0307749},
year = {2013}
}