文献类型：期刊文献

英文题名：Laser Welding of Fiber and Quartz Glass Ferrule

作者：Wang, Wenhua[1]

机构：[1]Guangdong Ocean Univ, Sch Elect & Informat Engn, Zhanjiang 524088, Peoples R China

年份：2023

卷号：14

期号：5

外文期刊名：MICROMACHINES

收录：SCI-EXPANDED(收录号：WOS:000996999300001)、、EI(收录号：20232214177495)、Scopus(收录号：2-s2.0-85160616070)、WOS

基金：This research was funded by the "Zhangjiagang Science and Technology Plan Project (ZKCXY2140)", the "Characteristic Innovation Project of Guangdong Universities (2019KTSCX054)", the "Guangdong Basic and Applied Basic Research Foundation (2019A1515010835)", and the "Scientific Research Startup Foundation of Guangdong Ocean University (R19028)".

语种：英文

外文关键词：laser welding; quartz glass; optical fiber; CO2 laser

外文摘要：Optical fiber sensors fabricated by bonding have several limitations. To address these limitations, a CO2 laser welding process for an optical fiber and quartz glass ferrule is proposed in this study. A deep penetration welding method with optimal penetration (penetrating the base material only) is presented to weld a workpiece according to the requirements of the optical fiber light transmission, size characteristics of the optical fiber, and the keyhole effect of the deep penetration laser welding. Moreover, the influence of laser action time on the keyhole penetration is studied. Finally, laser welding is performed with a frequency of 24 kHz, power of 60 W, and duty cycle of 80% for 0.9 s. Subsequently, the optical fiber is subjected to out-of-focus annealing (0.83 mm, 20% duty cycle). The results show that deep penetration welding produces a perfect welding spot and has good quality; the hole generated from deep penetration welding has a smooth surface; the fiber can bear a maximum tensile force of 1.766 N. The performance of the optical fiber sensor is stable, and the maximum pressure deviation corresponding to the cavity length fluctuation is about 7.2 Pa. Additionally, the linear correlation coefficient R of the sensor is 0.99998.