• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Conference on Optics and Photonics 2015 >Design of multistack Fabry - Perot structure with defect as tunable transmission filter for CWDM using FDTD method
【24h】

Design of multistack Fabry - Perot structure with defect as tunable transmission filter for CWDM using FDTD method

机译：利用FDTD方法设计具有缺陷的CWDM多层Fabry-Perot结构作为可调透射滤波器。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The translational symmetry of the periodicity in a photonic crystal can be disturbed by introducing a controlled defect in its periodicity. The photon localization causes a pass band in the photonic bandgap. Based on this concept, we are proposing the design of a tunable narrow band filter for multiple wavelengths used for coarse wave length division multiplexing (CWDM) system. To achieve that, a multiple stack Fabry Perot structure with suitable stack materials and controllable defect is considered. The proposed Fabry Perot structure consists of periodic layers of electro optic material Lithium Niobate (nH) and Magnesium Fluoride (nL). The optical length of each such layer is their corresponding quarter wave length width at the design wavelength λ_0 (1.55 μm). The reflection band of the quarter wavelength multilayer structure is formed due to the periodic repetition of the (LH)~NL, where L and H are the quarter wavelength width of the nL and nH material respectively and N is the number of bilayers. A quarter wave layer L is then inserted between the groups of (LH)~N and (HL)~N to form the Fabry Perot resonator structure which can be used for narrow band transmission filter. The simulation has been carried out in both FDTD and TMM method and compared. As the refractive index of the Lithium Niobate can be tuned electro-optically, the filter can also be made tunable.
机译：光子晶体中周期性的平移对称性可通过在其周期性中引入受控缺陷而受到干扰。光子定位会在光子带隙中产生通带。基于此概念，我们提出了一种用于粗波分多路复用（CWDM）系统的用于多个波长的可调窄带滤波器的设计。为了实现这一点，考虑了具有适当堆叠材料和可控缺陷的多层堆叠Fabry Perot结构。提议的Fabry Perot结构由电镜材料铌酸锂（nH）和氟化镁（nL）的周期性层组成。每个这样的层的光学长度是它们在设计波长λ_0（1.55μm）处对应的四分之一波长宽度。四分之一波长多层结构的反射带是由于（LH）〜NL的周期性重复而形成的，其中L和H分别是nL和nH材料的四分之一波长宽度，N是双层数。然后将四分之一波层L插入在（LH）〜N和（HL）〜N的组之间以形成可用于窄带传输滤波器的法布里珀罗谐振器结构。仿真已经在FDTD和TMM方法中进行并进行了比较。由于铌酸锂的折射率可以电光调节，因此滤光片也可以调节。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号