Fabrication and characterization of quasi two-dimensional photonic crystal structures with tunable optical properties

具有可调光学特性的准二维光子晶体结构的制造和表征

• 批准号: 5318774
• 负责人: Professor Dr. Johann Peter Reithmaier
• 金额: --
• 依托单位: Lehrstuhl für Technische Physik
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2001
• 资助国家: 德国
• 起止时间: 2000-12-31 至 2003-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5318774?language=en
• 关键词: Fabrication; characterization; quasi; two; dimensional

Photonic crystals with variable optical properties are expected to allow the realization of a new class of tunable or switchable elements and could open a new field for large scale integrated optoelectronic components. In the frame of this project tunable quasi two-dimensional photonic crystals will be fabricated in AlGaAs/GaAs waveguides by filling photonic crystals with liquid crystals. The optical properties of liquid crystals can be modified by electric fields. Refractive index changes of up to 0.2 should be possible which is large enough to modify significantly the band structure of photonic crystals. The basic properties of this new class of photonic crystals will be characterized by determining the transmission and reflection properties. The results will be compared with simulations by taking into account the specific material properties of liquid crystals. First feasibility studies will be performed regarding variable waveguiding and light localization in switchable microresonators. These basic functions are building blocks for future devices like tunable filters and microlasers or switchable waveguides.

具有可变光学特性的光子晶体有望实现一类新的可调谐或可切换元件，并可能为大规模集成光电子器件开辟一个新的领域。在本项目的框架下，我们将在AlGaAs/GaAs波导中通过液晶填充光子晶体的方法制备准二维可调谐光子晶体。电场可以改变液晶的光学性质。高达0.2的折射率变化应该是可能的，这足够大以显著地改变光子晶体的能带结构。这类新的光子晶体的基本特性将通过确定透射和反射特性来表征。通过考虑液晶的特定材料特性，将结果与模拟进行比较。第一个可行性研究将进行关于可变波导和光局部化在可切换的微谐振器。这些基本功能是未来可调谐滤波器和微激光器或可切换波导等设备的基础。