无序耦合谐振腔光波导的光学特性研究

项目名称： 无序耦合谐振腔光波导的光学特性研究

项目编号： No.11204263

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 物理学I

项目作者： 邓超生

作者单位： 湘潭大学

项目金额： 24万元

中文摘要： 新型的微纳光子器件耦合谐振腔光波导（CROW）在慢光、全光缓存、增强光物相互作用等方面蕴藏着巨大的潜在应用价值，但相邻微谐振腔之间的耦合系数随机变化导致的非对角无序以及微谐振腔的尺寸之间、耦合系数之间的关联无序等各种无序的存在显著降低了CROW的相关性能，制约了CROW的推广和批量生产。为了研究非对角无序和关联无序对由几百个微球谐振腔构成的大尺寸CROW的光学特性的影响，探讨光在CROW中传播时无序在其中所起的作用，本项目拟从Mie散射理论出发，考虑微球谐振腔中的不同角模数所对应的光波之间的相互耦合，从理论分析上分别建立非对角无序和关联无序作用下的紧束缚理论模型，给出表征CROW的光学特性的各种解析表达式，对CROW的慢光效应、光的传输效率、光的局域化等光学特性进行研究并与相关实验结果进行分析和对比，寻求制约CROW相关性能提升的原因，为制备基于CROW的高精度的光学集成器件提供理论依据。

中文关键词： 耦合谐振腔光波导；非对角无序；关联无序；光学特性；

英文摘要： A new kind of micro-/nano-photonic device based on the coupling of nearest-neighbor optical micro-resonators, the coupled resonator optical waveguide (CROW), has great and potential practical applications in slow-light delay lines, all-optical buffer, enhancement of light-matter interactions, etc. However, the unavoidable imperfections such as off-diagonal disorder, emerging from the random variation of coupling coefficients between two neighboring micro-resonators, and correlated disorder, emerging from correlated randomness in size and coupling coefficients of micro-resonators, greatly affected the performance of CROWs and hence restricted the popularization and batch production of CROWs. The aims of this proposal are to study the effect of off-diagonal disorder and correlated disorder on the optical properties of large-scale CROWs constructed by several hundreds microspherical resonators and to investigate the role of disorder in optical transport in CROWs. To this end, in this proposal, starting from the perspective of Mie scattering theory and considering the coupling between Whispering Gallery Modes with different angular mode numbers, we intend to theoretically construct tight-binding models for the situation of off-diagonal disorder and the situation of correlated disorder respectively. We then intend to

英文关键词： Coupled Resonator Optical Waveguide；Off-diagonal disorder；Correlated disorder；Optical properties；