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Design, Fabrication and Applications of Fiber Taper for Filtering and Sensing

机译：光纤锥度的设计，制造及应用

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摘要

Recently, there has been renewed interest in fiber taper due to its potential to be a building block for micro and nano photonic devices with unique optical and mechanical properties. This thesis is concerned with the study of two key applications which are optical filtering and sensing. Since the exploding demand of broadband optical communications system, the incorporation of fiber taper as a tunable filter in Brillouin-erbium fiber laser further extends the tunability and number of lasing wavelength in the multi-wavelength laser. Apart from that, it serves as sensor to monitor and inspect the structural health of civil infrastructure.;A new method of tuning a multi-wavelength fiber laser by incorporating fiber taper is experimentally demonstrated. As a tunable filter, the biconical fiber taper and in-line two tapers interferometer are incorporated into the Brillouin-erbium doped fiber laser system to position the self-lasing cavity modes. Subsequently, by injecting the Brillouin pump near to the tunable self-lasing cavity modes, it suppresses the modes and generates stable cascaded Brillouin-stokes lines. Interestingly, not only wavelength shifting, the bandwidth of the self-lasing cavity mode is tunable by compressing the in-line two tapers MZI. Therefore, the number fo lasing wavelength is switchable to the maximum number of 12 while maintaining the extinction ratio of 20 dB.
机译：近来，由于其逐渐成为具有独特的光学和机械性能的微米和纳米光子器件的基础，人们对光纤锥度重新产生了兴趣。本文涉及光学滤波和传感两个关键应用的研究。由于宽带光通信系统的爆炸性需求，在布里渊in光纤激光器中并入光纤锥作为可调谐滤波器，进一步扩展了多波长激光器的可调谐性和发射激光的数量。除此之外，它还可以用作监测和检查民用基础设施结构健康的传感器。实验证明了一种通过掺入光纤锥度来调节多波长光纤激光器的新方法。作为可调滤波器，将双锥形光纤锥度和直插式两个锥度干涉仪集成到布里渊in掺杂光纤激光系统中，以定位自激腔模式。随后，通过将布里渊泵注入到可调自激腔模式附近，它会抑制这些模式并生成稳定的级联布里渊斯托克斯线。有趣的是，不仅波长移动，而且通过压缩串联的两个锥度MZI，可调节自激腔模式的带宽。因此，在保持消光比为20dB的同时，可以将入射波长的数量切换为最大数量12。

著录项

  • 作者

    Horng Sheng, Lin.;

  • 作者单位

    Multimedia University (Malaysia).;

  • 授予单位 Multimedia University (Malaysia).;
  • 学科 Engineering.;Electrical engineering.;Computer engineering.
  • 学位 Ph.D.
  • 年度 2017
  • 页码 126 p.
  • 总页数 126
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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