高性能F-P可调谐滤波器的研究与开发

Research and Application of High-performance Tunable Fabry-Perot Filter

作者: 专业:材料加工工程 导师:姜德生 年度:2011 学位:硕士  院校: 武汉理工大学

Keywords

tunable optical filter, Fabry-Perot, applied research

        可调谐光滤波器是一种波长选择器件,在光纤通信和光纤传感领域中具有广泛的应用,可以用于半导体激光器或光纤激光器的反射腔镜和窄带滤波、复用/解复用器、光放大器中的噪声抑制、波长选择器、波长转换器以及色散补偿器等。特别是随着我国光纤通信和光纤传感技术的深入发展,作为复用器与解复用器以及传感解调系统的核心部分,可调谐光滤波器已经成为光网络中不可或缺的关键器件。当前可调谐光纤滤波器的种类很多,应用最广、技术最成熟的当属可调谐法布里一珀罗滤波器。基于全光纤F-P标准具技术的光纤可调谐滤波器,它允许波长跟F-P腔长度有倍数关系的光通过,而其他波长的光按爱里函数衰减。由于受到工艺的限制,以往的可调谐滤波器在调谐速率、动态范围以及插入损耗等方面的性能较差,难以满足实际应用的需求。本文首先介绍了各种光纤F-P可调谐滤波器在国内外的发展历史以及当前的发展现状,突出该可调F-P滤波器国产化研究的重要性,所以本课题重点从低成本批量化生产角度展开该器件实用化研究。本文研究的可调谐滤波器无透镜光纤结构或其他准直光学器件,主要工作是提高可调谐光纤F-P滤波器的性能,致力于提供高精度、高分辨率、低插入损耗、环境不敏感、高传输性能和大动态范围的可调F-P光滤波器产品。本文的主要研究内容及结论如下:(1)分析光纤法布里-珀罗滤波器中F-P腔体的光学原理,基于对可调谐滤波器关键技术的分析,对可调谐滤波器的光学干涉单元进行了研究与实验。主要从影响滤波器的插入损耗、带宽、自由谱区等性能指标的因素着手开展研究,通过分析解释了这些参量的变化,并为改善提高光纤法布里-珀罗可调谐滤波器的性能提出了解决方案。(2)以高性能的F-P可调谐滤波器所要达到的具体性能指标为依据,研究了光纤法布里-珀罗滤波器的结构、光学单元器件的制备和性能测试。重点从光纤端面的加工工艺以及端面镀膜工艺角度探讨了F-P可调谐滤波器的滤波性能的影响因素。详细介绍了相关的实验装置与具体的实验操作工艺方法。(3)研究了可调谐F-P滤波器稳定性,包括从机械驱动结构的设计和压电材料的选择与结构等方面研究了改善滤波器的动态调谐性能;从驱动元件的性能、结构形式、组装工艺等角度研究了影响F-P可调谐滤波器器件可靠性、稳定性和重复性的因素,以将不利因素降到尽可能低,从经济实用和工业化生产角度研究该滤波器国产化工艺。(4)本课题研究的可调谐光纤法布里-珀罗滤波器,具备了极宽的动态范围,低插入损耗,快速调谐,极窄的3 dB带宽等优点,可应用于光通信、光纤传感、微波光子学等领域。
    A tunable optical filter is one of wavelength-selective devices, and it’s widely used in the fields of optical communication and fiber optical sensor, such as reflective mirror and narrow filter for semiconductor laser or fiber laser, multiplexer or demultiplexer, noise depression in optical amplifier, wavelength selective device, and wavelength converter. With the further development of optical communication and fiber optical sensor technology, as for the coral components of multiplexer, demultiplexer and integration system, the tunable filter has became the indispensable critical device in the optical network. Nowadays, although there are several kinds of tunable optical fiber filter, the tunable filter based Fabry-Perot(F-P) is most widely used and matured.The fiber optical tunable filter based all-fiber F-P etalon allows partly light passed, where the cavity length of F-P is multiple of the wavelength of the light, and the others attenuate as Airy function. Limited to the fabrication technique, the previous tunable filter had some defects in terms of tuning rate, dynamic range and insertion loss, and it can hardly satisfy to practice application. The tunable filter in this dissertation is based all fiber structure, without lens or some collimating devices. The mainly purpose is to improve the performance of tunable optical filter based F-P, and offer a tunable filter based F-P, which features high accuracy, high resolution, low insertion loss, insensitive to environments disturbance, high transmission performance and large dynamic range.The dissertation introduces the history and present status of tunable optical filter at home and broad, and emphasizes the importance of the localization of tunable optical filter based F-P. At present, this device almost all imports, and extremely costly, which impedes the development of optical communication and fiber optical sensor. Therefore, this issue focuses on the practical research in terms of low-cost and mass production.According to the specific performance index of tunable optical filter based F-P with high performance, the fabrication process with low cost and localization was researched. First of all, the dissertation discuss the influence factor to the performance of tunable optical filter based F-P in detail, in terms of processing technology and film coating technology of fiber ends. Then, the related experimental device and specific operation approach, were also presented. Moreover, the influence factor to repetitiveness and stability of temperature were analyzed and experimentally researched. Finally, some advice for further research was proposed.In this dissertation, the tunable fiber optical filter based F-P can offer many advantages, including large dynamic range, low insertion loss, fast tuning, very narrow 3dB bandwidth and so on, and could apply to optical communication, fiber optical sensor, microwave photonics etc.
        

高性能F-P可调谐滤波器的研究与开发

摘要4-6
Abstract6-7
第1章 绪论10-21
    1.1 可调谐滤波器的发展概述10-12
    1.2 国内外的研究与应用现状12-18
    1.3 选题背景及意义18-20
    1.4 本课题研究的主要内容20-21
第2章 可调谐F-P腔滤波器的基本理论21-33
    2.1 F-P腔的基本原理21-25
        2.1.1 F-P腔的光学理论基础21-24
        2.1.2 F-P腔的调制原理24-25
    2.2 可调谐F-P滤波器的基本原理25-29
        2.2.1 可调谐F-P滤波器的工作原理25-28
        2.2.2 F-P滤波器在解调系统中的应用原理28-29
    2.3 F-P滤波器的性能指标29-30
    2.4 可调谐F-P滤波器的应用展望30-33
第3章 高性能F-P腔的制备技术研究33-47
    3.1 可调谐F-P滤波器33-34
    3.2 光纤法布里-珀罗滤波器的结构34-35
    3.3 光学单元器件的制备35-39
        3.3.1 光纤端面的抛磨与对准35-37
        3.3.2 端面镀膜处理37-39
    3.4 性能测试39-47
        3.4.1 实验仪器介绍39-41
        3.4.2 测试需注意的问题41-42
        3.4.3 实验结果图谱分析42-47
第4章 可调谐F-P滤波器稳定性研究47-60
    4.1 机械驱动结构设计47-48
    4.2 压电陶瓷及其压电驱动原理48-51
    4.3 电学特性研究51-55
        4.3.1 实验系统51
        4.3.2 可调谐F-P滤波器电学驱动性能实验51-55
    4.4 温度稳定性研究55-60
        4.4.1 光纤光栅解调仪55-57
        4.4.2 实验仪器57
        4.4.3 温度稳定性实验57-60
第5章 总结和展望60-62
参考文献62-66
作者在攻读硕士学位期间发表的学术论文及专利66-67
致谢67
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