Fano resonance

Fano lines in the reflection spectrum of directly coupled systems of waveguides and cavities: Measurements, modeling, and manipulation of the Fano asymmetry
J. Lian, S.Sokolov, E. Yüce, S. Combrié, A. De Rossi, A. P. Mosk
Phys. Rev. A 96, 033812: 1-6 (2017)