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首页> 外文期刊>Optics Letters >Compact assembly-free vector bend sensor based on all-in-fiber-core Mach-Zehnder interferometer
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Compact assembly-free vector bend sensor based on all-in-fiber-core Mach-Zehnder interferometer

机译:基于全纤维核心Mach-Zehnder干涉仪的紧凑型组件矢量弯曲传感器

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摘要

A novel low-cost, compact, assembly-free and sensitive optical fiber curvature sensor is presented. This device consists of an off-axis positive refractive index modified zone (PRIMZ), induced by a direct femtosecond laser, written in a single-mode fiber (SMF) core. The PRIMZ transforms the original SMF section into a few-mode fiber (FMF). As a result, the whole fiber forms an assembly-free "SMF-FMFSMF" sandwich Mach -Zehnder interferometer. When the device is bent, a direction-dependent spectral shift of the interference pattern is produced. The sensitivity of the sensor is up to 2.53 and 2.24 nm/m(-1) for the 0 degrees and 180 degrees orientations in a wide bend range (from 0 to 4 m(-1)). In addition, the device is immune to the surrounding refractive index and has a low-temperature crosstalk, which makes it very attractive for practical structural monitoring applications. (C) 2018 Optical Society of America
机译:提出了一种新型的低成本,紧凑,无组装和敏感的光纤曲率曲率传感器。 该设备由轴外折射率修改区域(PRIMZ)组成,由直接飞秒激光器引起,用单模光纤(SMF)核心写入。 Primz将原始SMF部分转换为几种模式光纤(FMF)。 结果,整个纤维形成了无组装的“SMF-FMFSMF”夹层Mach -Zehnder干涉仪。 当设备弯曲时,产生干扰图案的方向依赖性频谱偏移。 0度的传感器的灵敏度高达2.53和2.24nm / m(-1),在宽弯曲范围内(从0到4 m(-1))中的180度取向。 此外,该装置免受周围折射率的免疫,具有低温串扰,这使得对于实际结构监测应用非常有吸引力。 (c)2018年光学学会

著录项

  • 来源
    《Optics Letters》 |2018年第3期|共4页
  • 作者单位

    Huazhong Univ Sci &

    Technol Wuhan Natl Lab Optoelect Wuhan 430074 Peoples R China;

    Huazhong Univ Sci &

    Technol Wuhan Natl Lab Optoelect Wuhan 430074 Peoples R China;

    Aston Univ Aston Inst Photon Technol Birmingham B4 7ET W Midlands England;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 计量学;光学;
  • 关键词

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