A New Two-sided Coupling Channel Drop Filter Based On a Two-dimensional Photonic Crystal
We design a new two-sided coupling channel drop filter (CDF) based on a two-dimensional (2D) photonic crystal (PC).Three channels formed by line defects for light propagation,two L4 resonators positioned at both sides of the input waveguide for light coupling,and one point defect micro-cavity in the bus waveguide for wavelength-selective reflection are introduced into the PC structure.The optical characteristics of this proposed structure are calculated by finite-difference time-domain (FDTD) method combined with the perfectly matched layers (PMLs) as the boundary conditions.Three wavelengths centered at 1550,1575 and 1610 nm within the limit of communication windows are successfully separated in three channels by adjusting the size of coupling rods and the positions of L4 resonators and micro-cavity.High transmission efficiency and more than 20 nm channel spacing are achieved.These demonstrate that our proposed structure is suitable for photonic integrated circuits (PICs) and coarse wavelength division multiplexing (WDM) optical communication systems.
Photonic crystals channel drop filters waveguide defects transmission
Xiang-nan Zhang Gui-qiang Liu Ying Hu Zheng-jie Cai Yuan-hao Chen
College of Physics and Communication Electronics,Key Laboratory of Optoelectronic and Telecommunication of Jiangxi Province,Jiangxi Normal University,Nanchang 330022,China
国际会议
郑州
英文
1979-1982
2013-10-19（万方平台首次上网日期，不代表论文的发表时间）