title: Controlling the spectral width in compound waveguide grating structures.
abstract: Spectral responses in compound waveguide grating structures composed of two ridges with identical widths in each period are presented. For the proposed structures, we show that the spectral width of the guided-mode resonance (GMR) can be tailored in an independent way without modifying the spectral lineshapes and sideband levels. The method described in this Letter offers a very simple and efficient way to control spectral responses in GMR structures.
authors: Key Laboratory of Advanced Micro-structure Materials, Ministry of Education, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China.
authors: Wenxing
authors: W
authors: Liu
authors: Yunhui
authors: Y
authors: Li
authors: Haitao
authors: H
authors: Jiang
authors: Zhenquan
authors: Z
authors: Lai
authors: Hong
authors: H
authors: Chen