摘要
基于阵列波导光栅(AWG)的结构特点,采用Bloch函数近似算法,建立了锥面波导的结构模型,考虑信号在波导中的辐射特性,讨论锥面AWG能量密度及其散射特性。结合作者前期在锥面AWG波导结构参数的研究工作,对锥面AWG进行了仿真计算。数值结果表明:锥面AWG布里渊区的中心区域辐射能量最大,并得到传输系数与轴向距离z及衍射角的关系,计算得到的基本参数与仿真结果相吻合。
In this paper, based on the structure characteristic of array waveguide grat-ing(AWG), and the approximately arithmetic Bloch function, the structure mode of a planar array of taped waveguides is made. The radiation characteristics and simulation of AWG are calculated, energy density and dispersion characteristics on a tapered planar AWG are discussed. Numerical results demonstrate that the most radiation power is in the Brillouin center zone Ω, the relation between transmission coefficient Tm and diffraction angle a is obtained, and the calculation is in agreement with the simulation result.
出处
《量子电子学报》
CAS
CSCD
北大核心
2004年第1期77-82,共6页
Chinese Journal of Quantum Electronics
基金
国家教育部科学基金重点项目(99086)
湖北省教育厅2001年自然科学重点项目(2001A27008)
关键词
阵列波导光栅
锥面波导
能量密度
色散
传输系数
fiber and waveguide optics
tapered planar array waveguide grating
energy density
dispersion characteristics
transmission coefficient
