准分子激光光纤光栅制备技术研究

发布时间：2018-01-11 01:25

本文关键词：准分子激光光纤光栅制备技术研究　出处：《中国科学技术大学》2017年硕士论文　论文类型：学位论文

【摘要】：作为一种重要的光纤无源器件,光纤布拉格光栅在光纤通信和光纤传感等领域具有重要价值。不同的应用场合对光纤布拉格光栅有不同的要求,且制备过程中的诸多因素会影响光纤光栅的光学特性,因而,如何准确地制备符合特定应用场合的光纤光栅至关重要。此外,光子晶体光纤和聚合物光纤等新型光纤的问世和发展,为光纤光栅技术的发展提供了新平台。光子晶体光纤光栅不仅具有新的光谱特性和应用价值,而且光子晶体光纤光栅的制备对光子晶体光纤光谱特性的分析具有重要作用。聚合物光纤光栅不仅具有柔软、易弯、质轻等优点,而且因聚合物材料的低杨氏模量等特性而具有灵敏度高、响应范围宽和生物兼容性等优良特性。本研究课题搭建了一套采用248 nm KrF准分子激光器和相位掩模板制备光纤布拉格光栅的光学系统,对光纤光栅制备过程中影响其光学性能的因素进行了研究,探索了制备光子晶体光纤布拉格光栅的工艺,并对其切割方法、耦合方式和光谱特性进行了研究,最后对聚合物光纤的切割和聚合物光纤光栅的制备进行了探索,主要内容包括以下几点:1.搭建了一套采用KrF准分子激光器和相位掩模板制备光纤布拉格光栅的光学系统,采用宽带光源和光谱分析仪观察并记录了光纤布拉格光栅的反射谱、透射谱以及动态生长过程。2.对制备过程中影响光纤光栅光学特性的因素进行了分析,特别是准分子激光器输出参数对光纤布拉格光栅光学特性的影响,包括单脉冲能量、脉冲重复频率、光束均匀性和能量稳定性。3.对纯石英光子晶体光纤和掺锗柚子型光子晶体光纤布拉格光栅的制备工艺进行了研究,包括:光子晶体光纤的切割、光子晶体光纤与石英单模光纤的耦合、光子晶体光纤的载氢增敏和光子晶体光纤布拉格光栅的制备。4.对聚合物光纤布拉格光栅的制备工艺进行了研究,包括:聚合物光纤的紫外激光切割、聚合物光纤与石英光纤的耦合以及聚合物光纤布拉格光栅的制备。
[Abstract]:As an important passive fiber device, fiber Bragg grating (FBG) has important value in the field of optical fiber communication and fiber sensing. Different applications have different requirements for fiber Bragg grating (FBG). And many factors in the fabrication process will affect the optical properties of fiber gratings. Therefore, it is very important to accurately fabricate fiber gratings suitable for specific applications. The advent and development of photonic crystal fiber and polymer fiber provide a new platform for the development of fiber grating technology. Photonic crystal fiber grating not only has new spectral characteristics and application value. The preparation of photonic crystal fiber gratings plays an important role in the analysis of photonic crystal fiber spectral characteristics. Polymer fiber gratings not only have the advantages of soft, easy bending, light weight and so on. Moreover, the polymer materials have high sensitivity due to their low Young's modulus and other properties. In this paper, an optical system using 248nm KrF excimer laser and phase mask to fabricate fiber Bragg grating (FBG) is built. The factors that affect the optical properties of fiber Bragg gratings are studied. The fabrication process of photonic crystal fiber Bragg gratings is explored. The cutting method, coupling mode and spectral characteristics are also studied. Finally, the cutting of polymer fiber and the fabrication of polymer fiber grating are explored. The main contents are as follows: 1. An optical system using KrF excimer laser and phase mask to fabricate fiber Bragg grating is built. The reflection spectrum, transmission spectrum and dynamic growth process of fiber Bragg grating were observed and recorded by broadband light source and spectrum analyzer. The factors affecting the optical properties of fiber Bragg grating were analyzed. Especially the influence of excimer laser output parameters on the optical characteristics of fiber Bragg grating, including single pulse energy, pulse repetition rate. Beam uniformity and energy stability. 3. The fabrication process of pure quartz photonic crystal fiber and germanium doped grapefruit type photonic crystal fiber Bragg grating is studied, including: cutting of photonic crystal fiber. The coupling of photonic crystal fiber with quartz single-mode fiber, the hydrogen sensitization of photonic crystal fiber and the fabrication of photonic crystal fiber Bragg grating. The fabrication process of polymer fiber Bragg grating is studied. It includes UV laser cutting of polymer fiber, coupling of polymer fiber and quartz fiber and fabrication of polymer fiber Bragg grating.
【学位授予单位】：中国科学技术大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN253

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