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Heat-treatment of fiber Bragg grating by arc discharge

机译：电弧放电纤维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：为了开发一种快速有效的技术来退火UV铭刻纤维布拉格光栅，研究了通过电弧放电扫描进行的热处理方法。研究了电弧放电下紫外线闭合FBG的光谱退化。发现透射频谱强度降低，3dB带宽变窄，中心波长是蓝移位的。增加扫描次数，传输频谱强度，3dB带宽和FBG的中心波长缓慢变化，直到最后它们保持不变。同样的退火过程也进行了用于飞秒激光铭刻FBG。发现热处理后光谱保持不变。对于稳定的热特性，使用Femtosecond激光铭刻FBG来研究电弧放电的光谱响应。放电导致FBG上的非均匀温度场，导致显着的啁啾展宽，其可用于近似计算FBG上的温度梯度。热处理方法具有退火FBG和瞬态高温测量的潜在应用。

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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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