Improved Microfluidic Coupled-Cavity Waveguides for Slow Light Transmission

• 作者: 吕淑媛 张栋 赵建林
• 来源期刊: 中国物理快报(英文版)
• 学科: 物理学
• 关键词: 耦合腔波导 光传输 微流控 平面波展开方法 紧束缚模型 晶体结构 三角晶格 速度剖面
• 年，卷（期）: 2010,（3）
• 页码范围: 166-169
• 页数: 4页
• 分类号: O413.1 TN25
• 语种: 英文

摘要

We present a method based on the selective liquid infiltration in air holes to produce slow light in a coupled-cavity waveguide structured by two-dimensional photonic crystal and analyze the slow light propagation in the coupled-cavity waveguide with triangular lattice. The group velocity profile of different coupled-cavity waveguides, obtained by the selective liquid infiltration in the holes between the cavities in waveguide and the increased radius of the first row of holes adjacent to the waveguide, is evaluated by using both the plane-wave expansion method and a tight binding model. We determine the optimal parameters to reduce the group velocity. Using a simpler coupled-cavity waveguide structure we obtain smaller group velocity compared to most investigations.