Guided-mode resonances in multimode planar periodic waveguides  

作　　者：孙天玉 晋云霞 邵建达 范正修 

机构地区：[1]Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences [2]Graduate University of Chinese Academy of Sciences

出　　处：《Chinese Optics Letters》2010年第6期557-559,共3页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China under Grant No.10704079.

摘　　要：Using the effective medium theory and the waveguide eigenvalue equation,we design a multimode planar periodic waveguide.When a plane wave illuminates the grating at the designed angle and wavelength, more than one leaky modes are excited coincidentally.Then the reflection efficiency around this designed angle and wavelength is investigated using a rigorous coupled wave analysis formulation and a gap of reflection peaks is found.Electric field distributions reveal that this high reflectivity gap is due to the coupling between these two coincidentally excited leaky modes.Using the effective medium theory and the waveguide eigenvalue equation,we design a multimode planar periodic waveguide.When a plane wave illuminates the grating at the designed angle and wavelength, more than one leaky modes are excited coincidentally.Then the reflection efficiency around this designed angle and wavelength is investigated using a rigorous coupled wave analysis formulation and a gap of reflection peaks is found.Electric field distributions reveal that this high reflectivity gap is due to the coupling between these two coincidentally excited leaky modes.

关 键 词：Eigenvalues and eigenfunctions Electric fields 

分 类 号：TN814[电子电信—信息与通信工程]