基于侧边抛磨微结构光纤耦合的光子晶体器件研究

项目名称： 基于侧边抛磨微结构光纤耦合的光子晶体器件研究

项目编号： No.61275046

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 钟永春

作者单位： 暨南大学

项目金额： 75万元

中文摘要： 光子晶体是纳米光学研究领域的热门研究课题，其实用化研究受制于与传统光波导的匹配问题。本项目是将光子晶体谐振腔制作在侧边抛磨的微结构光纤上，实现光子晶体谐振腔与微结构光纤中模场的耦合。一方面利用光子晶体谐振腔高Q值的特性增强光纤器件的灵敏度；另一方面利用微结构光纤对传导模的可控性，使光纤导模与光子晶体谐振腔的缺陷模相互匹配，解决光子晶体与光纤的侧面耦合问题。研究的内容包括：基于耦合的光子晶体谐振腔与侧边抛磨微结构光纤复合光学模型，进行不对称结构的矢量耦合理论分析，并研究光子晶体谐振腔对侧边抛磨光纤探测系统的调控机制；使用全息方法制作光子晶体谐振腔，轮式法制备满足耦合要求的侧边抛磨微结构光纤，并研究谐振腔与光子晶体光纤的精密耦合技术。探索耦合多个谐振腔的多参量传感阵列技术。本项目的研究内容为光子晶体的应用提供了新的思维。所研制的新型光纤器件可实现高集成度、多参量、高空间分辨率及高灵敏度的传感。

中文关键词： 侧边抛磨光纤；微结构光纤；光子晶体；耦合；石墨烯传感器

英文摘要： Photonic crystal is one of the major research and development trend in the field of nano-optics. Its application is limited by the low coupling efficiency between photonic crystals waveguide and traditional waveguide. This project aim to design and fabricate novel fiber-photonic crystal devises with photonic crystal cavity on the side polished microstructure fiber. Via the electromagnetic field coupling between the fiber mode and the photonic crystal resonant cavity, the sensitivity of fiber optic devices will be largely increased due to the high quality factor (Q factor) of photonic crystal resonators. Moreover, because of the controllability of the microstructure fiber guided mode, the coupling strength between the side-polished fiber and the cavity can be sufficiently enhanced by matching the defect mode of the photonic crystal cavity with the guided mode of the microstructure fiber. The main content of this study include: Firstly, the composite analysis model will be established basing on the vector coupled mode theory on asymmetric structures, in order to provide insights into the regulatory mechanism of the photonic crystal cavity on the side polished fiber sensing system. Secondly, photonic crystal structures will be fabricated using the holographic lithography method while the side-polished photonic crys

英文关键词： side-polished fiber；microstructure fiber；photonic crystals；coupling；graphene based sensor