光学学报, 2013, 33 (1): 0123001, 网络出版: 2012-10-19   

基于三角晶格光子晶体谐振腔的双通道解波分复用器 下载: 882次

Two-Wavelength Division Demultiplexer Based on Triangular Lattice Photonic Crystal Resonant Cavity
作者单位
南京理工大学电子工程与光电技术学院, 江苏 南京 210094
摘要
提出了一种基于三角晶格二维光子晶体解波分复用器。该器件主体由线缺陷波导、环形谐振腔及点缺陷微腔构成。使用平面波展开法研究了线缺陷波导的特性,给出了线缺陷波导的能带图,对局部器件微调后进行大量的性能仿真以及对整体器件进行性能仿真,选择合适的器件参数,并使用时域有限差分法研究了不同波长的光在解波分复用器中的传输特性,并给出了电场分布图。仿真结果表明,该种结构可以实现波长分别为1271 nm和1291 nm两种光波的解波分复用。采用6个额外的介质柱,提高了环形腔的透射率;并通过在入射波导的入射口处增加三对介质柱,提高了波导的出射效率,从而整体上提高了双通道解波分复用器的输出效率。
Abstract
A wavelength-division demultiplexer based on two-dimensional triangular lattice photonic crystals is proposed. This structure is composed of line-defect waveguides, ring resonators and point-defect nanocavities. The characteristics of line-defect waveguide are investigated via the method of the plane-wave expansion, and the projected band diagrams of line-defect waveguide are derived. Then appropriate parameters are obtained after a lot of simulations of the fine tuning of local components and the whole device. The transmission characteristics of light with different wavelengths in the photonic crystals demultiplexer are analyzed via the finite-difference time-domain (FDTD) method, and the resulting electric fields are also given. The results show the ability of wavelength-division demultiplexing between 1271 nm and 1291 nm with this device. Besides, six extra dielectric rods are added to enhance the transmission of the ring cavity, and by adding three pairs of dielectric rods at the entrance port, the total output efficiency of the system is increased.

周兴平, 疏静, 卢斌杰, 孙凤兴. 基于三角晶格光子晶体谐振腔的双通道解波分复用器[J]. 光学学报, 2013, 33(1): 0123001. Zhou Xingping, Shu Jing, Lu Binjie, Sun Fengxing. Two-Wavelength Division Demultiplexer Based on Triangular Lattice Photonic Crystal Resonant Cavity[J]. Acta Optica Sinica, 2013, 33(1): 0123001.

本文已被 10 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!