基于金属填充型光子晶体光纤的传输特性研究
发布时间：2018-08-05 13:52
【摘要】：随着科技的进步与发展,产品向小型化、轻量化发展的趋势变的越来越明显。在光学领域,对于常用的偏振滤波器来说只对很小的频率范围或某一入射角度范围有效,而且其体积比较大、不利于实现光学集成。在环境水质检测与医疗诊断等方面如何实现实对被检测物的实时在线检测及其传感器的小型化也是人们一直在追求的目标。利用光子晶体光纤来制作偏振滤波器或传感器不仅可以达到体积小、易集成的目的,而且有望在其性能方面实现较大幅度的提升。本文利用有限元方法对基于金属表面等离子体共振型光子晶体光纤偏振滤波器和传感器进行数值模拟,在光子晶体光纤偏振滤波器和传感器的设计过程中,发现“非对称因素”的利用是提升其性能的关键。论文的主要内容如下:首先,介绍光子晶体光纤的产生背景、在光学领域的重要研究价值以及其最新发展状况。其次,在研究金属填充光子晶体光纤的过程中,利用表面等离激元和表面等离子体共振效应来解释光纤基质与金属之间发生的新奇现象。提出一种填充金属膜的空气孔排列呈椭圆形结构的光子晶体光纤偏振滤波器并对其性能进行了分析。再次,进一步设计了几种不同结构的光子晶体光纤滤波器,充分证明了本文提出的“非对称因素”对光子晶体光纤器件设计和性能优化所产生的重要影响,发现“非对称因素”的利用是提升其性能的关键。最后,设计了一种有关液体折射率探测的传感器。数值模拟结果表明本文所设计的传感器可以将其灵敏度提升至常见传感器灵敏度的两倍以上,相应的器件有望对液体实现高灵敏度检测。本文充分利用“非对称因素”对光子晶体光纤偏振滤波器和传感器进行设计和性能优化,这对光子晶体光纤的设计和制备具有重要的理论指导意义。
[Abstract]:With the progress and development of science and technology, the trend of product miniaturization and lightweight development is becoming more and more obvious. In the optical field, the polarization filter is only effective for a small frequency range or an angle of incidence range, and its volume is relatively large, which is not conducive to the realization of optical integration. How to realize the real-time on-line detection of the detected object and the miniaturization of the sensor in the aspects of environmental water quality detection and medical diagnosis is also the goal that people have been pursuing all the time. Using photonic crystal fiber to fabricate polarization filter or sensor can not only achieve the goal of small size and easy integration, but also can improve its performance greatly. In this paper, the finite element method is used to simulate the polarization filter and sensor of photonic crystal fiber based on metal surface plasmon resonance. In the process of designing the polarization filter and sensor of photonic crystal fiber, It is found that the use of asymmetric factors is the key to improve its performance. The main contents of this paper are as follows: firstly, the background of photonic crystal fiber (PCF), its important research value in optical field and its latest development are introduced. Secondly, in the process of studying metal-filled photonic crystal fiber, the surface isotherm and surface plasmon resonance effect are used to explain the novel phenomenon between the matrix and metal. A photonic crystal fiber polarization filter with elliptical structure of air holes filled with metal film is proposed and its performance is analyzed. Thirdly, several kinds of photonic crystal fiber filters with different structures are further designed, which fully proves the important influence of the asymmetric factors proposed in this paper on the design and performance optimization of photonic crystal fiber devices. It is found that the use of asymmetric factors is the key to improve its performance. Finally, a sensor for liquid refractive index detection is designed. The numerical simulation results show that the sensor designed in this paper can increase the sensitivity of the sensor to more than twice the sensitivity of common sensors, and the corresponding devices are expected to achieve high sensitivity to liquid detection. In this paper, we make full use of "asymmetric factors" to design and optimize the performance of photonic crystal fiber polarization filters and sensors, which is of great theoretical significance for the design and fabrication of photonic crystal fibers.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP212;TN713
本文编号：2165990
[Abstract]:With the progress and development of science and technology, the trend of product miniaturization and lightweight development is becoming more and more obvious. In the optical field, the polarization filter is only effective for a small frequency range or an angle of incidence range, and its volume is relatively large, which is not conducive to the realization of optical integration. How to realize the real-time on-line detection of the detected object and the miniaturization of the sensor in the aspects of environmental water quality detection and medical diagnosis is also the goal that people have been pursuing all the time. Using photonic crystal fiber to fabricate polarization filter or sensor can not only achieve the goal of small size and easy integration, but also can improve its performance greatly. In this paper, the finite element method is used to simulate the polarization filter and sensor of photonic crystal fiber based on metal surface plasmon resonance. In the process of designing the polarization filter and sensor of photonic crystal fiber, It is found that the use of asymmetric factors is the key to improve its performance. The main contents of this paper are as follows: firstly, the background of photonic crystal fiber (PCF), its important research value in optical field and its latest development are introduced. Secondly, in the process of studying metal-filled photonic crystal fiber, the surface isotherm and surface plasmon resonance effect are used to explain the novel phenomenon between the matrix and metal. A photonic crystal fiber polarization filter with elliptical structure of air holes filled with metal film is proposed and its performance is analyzed. Thirdly, several kinds of photonic crystal fiber filters with different structures are further designed, which fully proves the important influence of the asymmetric factors proposed in this paper on the design and performance optimization of photonic crystal fiber devices. It is found that the use of asymmetric factors is the key to improve its performance. Finally, a sensor for liquid refractive index detection is designed. The numerical simulation results show that the sensor designed in this paper can increase the sensitivity of the sensor to more than twice the sensitivity of common sensors, and the corresponding devices are expected to achieve high sensitivity to liquid detection. In this paper, we make full use of "asymmetric factors" to design and optimize the performance of photonic crystal fiber polarization filters and sensors, which is of great theoretical significance for the design and fabrication of photonic crystal fibers.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP212;TN713
【参考文献】
相关期刊论文 前1条
1 薛文瑞;郭亚楠;张文梅;;Modified surface plasmonic waveguide formed by nanometric parallel lines[J];Chinese Physics B;2010年01期
，本文编号：2165990
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