A compact in-plane photonic crystal channel drop filter

• 来源期刊: 中国物理B(英文版)
• 学科: 工学
• 关键词: 光子晶体 过滤器 通道 平面 紧凑型 时域有限差分方法 密集波分复用系统 共振模式
• 年，卷（期）: 2011,（7）
• 页码范围: 074210.1-074210.5
• 页数: 1页
• 分类号: TN011
• 语种: 英文
• DOI: 10.1088/1674-1056/20/7/074210

摘要

This paper presents a novel in-plane photonic crystal channel drop filter.The device is composed of a resonant cavity sandwiched by two parallel waveguides.The cavity has two resonant modes with opposite symmetries.Tuning these two modes into degeneracy causes destructive interference in bus waveguide,which results in high forward drop efficiency at the resonant wavelength.From the result of numerical analysis by using two-dimensional finite-difference time-domain method,the channel drop filter has a drop e...