title: Design and fabrication of narrow-frequency sharp angular filters.
abstract: The theoretical deduction for the frequency variations of the defect mode and its dependence on the incident angle in one-dimensional defective photonic crystals is discussed. Filters with the dual function of narrow frequency passbands and sharp angular pass breadths in visible and near-infrared wave bands, in which both the defect mode and the periodic structure are layers of integral times of quarter-wavelengths, were designed. This kind of filter was fabricated with commonly used coating machines.
authors.affiliation: State Key Laboratory of Optoelectronic Materials and Technologies, Zhongshan (Sun Yat-Sen) University, Guangzhou 510275, China.
authors.forename: Shaoji
authors.initials: S
authors.lastname: Jiang
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
authors.forename: Guanquan
authors.initials: G
authors.lastname: Liang
authors.forename: Hezhou
authors.initials: H
authors.lastname: Wang