The effect of periodic loss on the performance of refractive-index gratings has been studied in detail. It is shown that the loss periodicity and relative phase strongly affects the symmetry of the reflection, transmission, and loss spectra. This asymmetry is explained successfully through consideration of the overlap between the standing-wave intensity distribution and the periodic loss pattern.
© 2002 Optical Society of America
Vittoria Finazzi and Mikhail N. Zervas, "Effect of Periodic Background Loss on Grating Spectra," Appl. Opt. 41, 2240-2250 (2002)