Strain measurement at temperatures up to 800 degrees C using regenerated gratings produced in the high Ge-doped and B/Ge co-doped fibers

Zhang Pan; Yang Hangzhou; Wang Yupeng; Liu Hui; Lim Kok-Sing; Gunawardena Dinusha S.; Ahmad Harith

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Strain measurement at temperatures up to 800 degrees C using regenerated gratings produced in the high Ge-doped and B/Ge co-doped fibers

机译：使用在高Ge掺杂和B / GE共掺杂纤维中产生的再生光栅在高达800摄氏度的温度下测量

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In this work, we have proposed a sensor for strain measurement in high-temperature environments up to 800 degrees C by employing two regenerated fiber Bragg gratings. Two seed gratings (SGs) are inscribed in high Ge-doped and B/Ge-codoped fibers, respectively, which possess different temperature sensitivities. To achieve two gratings with different strain sensitivities, one of the gratings is chemically etched to reduce the fiber diameter for strain sensitivity enhancement. A thermal annealing process is carried out to activate the grating regeneration in the SGs. The temperature and strain calibration experiments indicate that the proposed structure has uncertainty values of 23.42 mu epsilon and 5.83 degrees C over the ranges of 0-1000 mu epsilon and 20 degrees C-800 degrees C, respectively. (C) 2017 Optical Society of America

机译：在这项工作中，通过采用两个再生光纤布拉格光栅，我们提出了一种用于高温环境中的应变测量的传感器，该传感器高达800℃。两个种子光栅（SGS）分别刻在高通掺杂和B / GE编码纤维中，其具有不同的温度敏感性。为了实现具有不同应变激敏性的两个光栅，在化学蚀刻的光栅中的一个以降低纤维直径，用于应变敏感性增强。进行热退火过程以在SGS中激活光栅再生。温度和应变校准实验表明，所提出的结构分别具有23.42μm-8.83℃的不确定性值，分别为0-1000μmε和20℃-800度C的范围。（c）2017年光学学会

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来源
《Applied optics》 |2017年第22期|共6页
作者
Zhang Pan; Yang Hangzhou; Wang Yupeng; Liu Hui; Lim Kok-Sing; Gunawardena Dinusha S.; Ahmad Harith;
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Northwest Univ Sch Phys Xian 710069 Shaanxi Peoples R China;

Northwest Univ Sch Phys Xian 710069 Shaanxi Peoples R China;

Northwest Univ Sch Phys Xian 710069 Shaanxi Peoples R China;

Northwest Univ Sch Phys Xian 710069 Shaanxi Peoples R China;

Univ Malaya Sci Fac Phys Dept Photon Res Ctr Kuala Lumpur 50603 Malaysia;

Univ Malaya Sci Fac Phys Dept Photon Res Ctr Kuala Lumpur 50603 Malaysia;

Univ Malaya Sci Fac Phys Dept Photon Res Ctr Kuala Lumpur 50603 Malaysia;

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Strain measurement at temperatures up to 800 degrees C using regenerated gratings produced in the high Ge-doped and B/Ge co-doped fibers

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