Periodic stacks with alternating refractive indices n1 and n2 (where n1⋍ n2) strongly reflect over a narrow spectral bandwidth. The effects of absorption and thickness errors are analyzed.
© 1981 Optical Society of America
Philip Baumeister, "Theory of rejection filters with ultranarrow bandwidths," J. Opt. Soc. Am. 71, 604-606 (1981)