The relative position of high- and low-transmittance bands in the transmittance spectrum of periodic multilayers is discussed. Conditions are derived for which two or more successive low-transmittance bands are suppressed. Specific designs are given and applications discussed.
ALFRED THELEN, "Multilayer Filters with Wide Transmittance Bands," J. Opt. Soc. Am. 53, 1266-1270 (1963)