Abstract
A method for lowering the sideband levels associated with the spectral response of resonant waveguide-grating filters is presented. With a TM-polarized incident wave near the Brewster angle, the sidebands are suppressed in resonant structures consisting of a half- wavelength “absentee” waveguide layer and an arbitrary-thickness grating layer. Adjusting the thickness of the grating layer permits control the spectral linewidth without appreciably affecting the sideband features. As the antireflection condition does not depend on the refractive index of the waveguide layer, flexibility in material selection results. The calculated results are verified by experiments.
© 2002 Optical Society of America
PDF ArticleMore Like This
R. Magnusson, D. Shin, and Z. S. Liu
DMB.2 Diffractive Optics and Micro-Optics (DOMO) 1998
S. Tibuleac and R. Magnusson
DMB1 Diffractive Optics and Micro-Optics (DOMO) 2000
R. Magnusson, M. Shokooh-Saremi, and Y. Ding
TuC2 Optical Interference Coatings (OIC) 2007