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采用不同飞秒激光写入方法的γ和 e 辐射诱导光纤布拉格光栅效应的比较研究。

Comparative Study of γ- and e-Radiation-Induced Effects on FBGs Using Different Femtosecond Laser Inscription Methods.

机构信息

Photonics and Optical Sensors Research Laboratory (PhOSLab), Cyprus University of Technology, Saripolou 33, Limassol 3036, Cyprus.

Graduate Program in Electrical Engineering, Federal University of Espirito Santo, Fernando Ferrari Avenue, Vitoria 29075-910, Brazil.

出版信息

Sensors (Basel). 2021 Dec 15;21(24):8379. doi: 10.3390/s21248379.

DOI:10.3390/s21248379
PMID:34960466
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8705888/
Abstract

This work presents an extensive, comparative study of the gamma and electron radiation effects on the behaviour of femtosecond laser-inscribed fibre Bragg gratings (FBGs) using the point-by-point and plane-by-plane inscription methods. The FBGs were inscribed in standard telecommunication single mode silica fibre (SMF28) and exposed to a total accumulated radiation dose of 15 kGy for both gamma and electron radiation. The gratings' spectra were measured and analysed before and after the exposure to radiation, with complementary material characterisation using Fourier transform infrared (FTIR) spectroscopy. Changes in the response of the FBGs' temperature coefficients were analysed on exposure to the different types of radiation, and we consider which of the two inscription methods result in gratings that are more robust in such harsh environments. Moreover, we used the FTIR spectroscopy to locate which chemical bonds are responsible for the changes on temperature coefficients and which are related with the optical characteristics of the FBGs.

摘要

本工作对使用逐点和逐面写入方法的飞秒激光写入光纤布拉格光栅（FBG）的伽马和电子辐射效应进行了广泛的比较研究。FBG 被写入标准的电信单模二氧化硅光纤（SMF28）中，并分别承受 15 kGy 的伽马和电子辐射总累积剂量。在暴露于辐射之前和之后，使用傅里叶变换红外（FTIR）光谱对光栅的光谱进行了测量和分析。分析了在不同类型的辐射下 FBG 温度系数响应的变化，并考虑了两种写入方法中哪一种导致在这种恶劣环境下更稳定的光栅。此外，我们使用 FTIR 光谱来确定哪些化学键负责温度系数的变化，以及哪些与 FBG 的光学特性有关。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/282294272714/sensors-21-08379-g008a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/132cd63814dd/sensors-21-08379-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/c0468b994805/sensors-21-08379-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/ded00ec03fb5/sensors-21-08379-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/83a5918b73c9/sensors-21-08379-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/214cfd470d57/sensors-21-08379-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/456d996ff856/sensors-21-08379-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/7ce6e7fbe9a0/sensors-21-08379-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/282294272714/sensors-21-08379-g008a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/132cd63814dd/sensors-21-08379-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/c0468b994805/sensors-21-08379-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/ded00ec03fb5/sensors-21-08379-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/83a5918b73c9/sensors-21-08379-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/214cfd470d57/sensors-21-08379-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/456d996ff856/sensors-21-08379-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/7ce6e7fbe9a0/sensors-21-08379-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a733/8705888/282294272714/sensors-21-08379-g008a.jpg

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Novel thermal annealing methodology for permanent tuning polymer optical fiber Bragg gratings to longer wavelengths.用于将聚合物光纤布拉格光栅永久调谐至更长波长的新型热退火方法。
Opt Express. 2018 Jan 22;26(2):1411-1421. doi: 10.1364/OE.26.001411.
3
Extreme Environment Sensing Using Femtosecond Laser-Inscribed Fiber Bragg Gratings.
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Ultra-compact strain- and temperature-insensitive torsion sensor based on a line-by-line inscribed phase-shifted FBG.基于逐行写入相移光纤布拉格光栅的超紧凑应变和温度不敏感扭转传感器。
Opt Express. 2016 Aug 8;24(16):17670-9. doi: 10.1364/OE.24.017670.
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Point-by-point written fiber-Bragg gratings and their application in complex grating designs.逐点写入光纤布拉格光栅及其在复杂光栅设计中的应用。
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