基于自聚焦平板波导的新型AWG理论研究  

Theoretical study on a novel AWG based on selfoc slab waveguide

作　　者：阎嫦玲[1] 刘德明[1] 鲁平[1] 

机构地区：[1]华中科技大学光电子科学与工程学院,湖北武汉430074

出　　处：《红外与激光工程》2006年第z5期110-116,共7页Infrared and Laser Engineering

基　　金：国家自然科学基金项目资助(60477027)

摘　　要：研究一种基于自聚焦平板波导的新型直波导阵列波导光栅(AWG)。介绍了自聚焦平板波导的结构:用几何光学法分析其光学特性,提出了二维半矢量有限差分光束传输法(SV FD-BPM)模拟光束在0.5节距自聚焦平板波导中先发散后会聚的传输过程,并介绍了这种基于自聚焦平板波导的直波导 AWG 的工作原理;最后设计了一个1×8的新型直波导 AWG 并用2D SV FD-BPM 对其进行了模拟,模拟结果显示该1×8的新型AWG 可以实现信道间隔为3.2 nm 的解复用功能。A novel Arrayed-waveguide grating (AWG) based on selfoc slab waveguides is proposed in this paper. First the structure of the selfoc slab waveguide is introduced;next it is analyzed by ray optics.Then 2D semi-vectorial finite difference beam propagation method (SV FD-BPM) is adopted to simulate the diverging and converging process that the beam propagates in a 0.5 pitch long selfoc slab waveguide.Later the principle of this novel AWG is presented;finally a 1×8 unbent AWG is designed and simulated by the 2D SV FD-BPM,the simulation result shows that it can accomplish wavelength demultiplexing and its channel spacing is 3.2 nm.

关 键 词：自聚焦平板波导 二维半矢量有限差分光束传输法 阵列波导光栅 解复用 

分 类 号：TN253[电子电信—物理电子学]