光纤光栅的光谱特性研究——毕业设计.docVIP

光纤光栅的光谱特性研究 摘要 随着信息业务量快速增长，语音、数据和图像等业务综合在一起传输， 从而对通信带宽容量提出了更高要求。全光通信是解决“电子瓶颈”最根本的途径，全光网通信可以极大地提高节点的吞吐容量，适应未来高速宽带通信的要求。基于光纤的光敏特性制作成的光纤光栅已成为光通信系统和光纤传感器中的关键器件。它有许多突出的优点，优良的性质，这使得它成为目前研究的热点。本文主要论述了光纤光栅的基本原理及其制作的方法，利用耦合理论分析光纤光栅光谱特性。本文中讨论了现在光纤光栅在各个领域的利用，并且探讨了光纤光栅现状的利用和未来的发展方向。本文利用matlab仿真，画出不同光栅的光谱图，观察各种参数的变化对光栅光谱特性的影响，并分析光纤光栅光谱图。 关键词：光纤光栅；耦合模理论；光谱特性 THE STUDY OF FIBER GRATING SPECTRAL CHARACTERIATICS ABSTRACT With the rapid growth of information services, voice, data and image transmission and other services integrated together, a higher communication bandwidth capacity is required. All-optical communication is the solution electronic bottleneck the most fundamental way and can greatly improve the node throughput capacity to meet the requirements of future high-speed broadband communications. Photosensitive properties of fiber-based optical fiber grating has been made into a fiber optic sensors and optical communication systems is the key device. It has many advantages, good nature, which makes it become a research hotspot. This article discusses the basic principles of fiber grating and its production methods, using coupling theory analysis of spectral characteristics of fiber grating. This article discusses the fiber Bragg gratin is now used in various fields, and discussed the status of the use of fiber Bragg grating and the direction of future development We use matlab simulation to draw different grating spectra picture ,observate of various parameters on the grating spectral characteristics, and analysis of fiber grating spectra. Key words: fiber bragg grating; Coupling theory; Spectral characteristics 目 录 1光纤光栅的基本概念与应用 1 1.1光纤光栅的基本概念 1 1.2光纤光栅的现状与应用 1 1.2.1光纤光栅的现状 1 1.2.2光纤光栅的应用 2 1.3光纤光栅的近期研究进展 3 1.4研究光纤光栅的光谱特性的目的 4 2 光纤光栅理论分析 5 2.1波动方程 5 2.2光纤中的模式 7 2.3耦合模理论 8 2.4传输矩阵分析法 12 3光纤光栅的光谱特性 13 3.1光纤bragg光栅光谱特性 13 3.1.1bragg光纤光栅 13 3.1.1.1相移bragg光栅matlab的仿真 15 3.1.1.2均匀bragg光纤光栅matlab的仿真 19 3.1.2 bragg光纤光栅的应用 23 3.2取样光栅光谱特性 24 3.2.1取样光栅 24 3.2.1.1取样光栅matlab的仿真 26 3