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Heat-treatment of fiber Bragg grating by arc discharge

机译：电弧放电对光纤布拉格光栅的热处理

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摘要

To develop a quick and effective technology to anneal the UV inscribed fiber Bragg grating, a heat-treatment method carried out by arc discharge scanning was studied. The spectral degeneration of UV-inscribed FBG under arc discharge was investigated. It is found that the transmission spectrum intensity was reduced, the 3 dB bandwidth is narrowed and the central wavelength was blue-shifted. Increasing the number of scanning, the transmission spectrum intensity, 3 dB bandwidth and central wavelength of the FBG change slowly until finally they remain unchanged. The similar annealing process was also carried out for femtosecond laser inscribed FBG. It was found that the spectrum remains unchanging after heat-treatment. For the stable thermal property, femtosecond laser inscribed FBG was used to investigate the spectrum response of arc discharge. The discharge leads to the non-uniform temperature field on the FBG, resulting in significant chirp broadening which can be used to approximate calculate the temperature gradient on the FBG. The heat-treated method have potential applications in annealing FBG and transient high temperature measurement.
机译：为了发展一种快速有效的退火紫外内切光纤布拉格光栅的技术，研究了一种通过电弧放电扫描进行热处理的方法。研究了电弧放电下UV刻印的FBG的光谱退化。发现透射光谱强度降低，3dB带宽变窄并且中心波长蓝移。随着扫描次数的增加，FBG的传输频谱强度，3 dB带宽和中心波长变化缓慢，直到最终保持不变。飞秒激光刻印的FBG也执行了类似的退火工艺。发现热处理后光谱保持不变。为了获得稳定的热性能，使用飞秒激光刻写的FBG来研究电弧放电的光谱响应。放电会导致FBG上的温度场不均匀，从而导致线性调频脉冲的明显展宽，可用于近似计算FBG上的温度梯度。热处理方法在FBG退火和瞬态高温测量中具有潜在的应用。

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  • 来源
    《Optical fiber technology》 |2019年第3期|70-75|共6页
  • 作者

    Xin Jingtao; Lou Xiaoping; Dong Mingli; Zhu Lianqing;

  • 作者单位

    Beijing Informat Sci & Technol Univ, Beijing Engn Res Ctr Optoelect Informat & Instrum, Beijing 100192, Peoples R China;

    Beijing Informat Sci & Technol Univ, Beijing Key Lab Optoelect Measurement Technol, Beijing 100192, Peoples R China;

    Beijing Informat Sci & Technol Univ, Beijing Key Lab Optoelect Measurement Technol, Beijing 100192, Peoples R China;

    Beijing Informat Sci & Technol Univ, Beijing Engn Res Ctr Optoelect Informat & Instrum, Beijing 100192, Peoples R China|Beijing Informat Sci & Technol Univ, Beijing Key Lab Optoelect Measurement Technol, Beijing 100192, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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