基于HALT方法的光纤陀螺用Y波导可靠性试验研究  

Test study on reliability of Y waveguide for fiber optic gyroscope based on highly acceleration life test

作　　者：石运来 向强 于怀勇 冯喆 吴衍记 SHI Yunlai;XIANG Qiang;YU Huaiyong;FENG Zhe;WU Yanji(Beijing Institute of Automatic Control Equipment,Beijing 100074,China)

机构地区：[1]北京自动化控制设备研究所,北京100074

出　　处：《导航定位与授时》2024年第1期124-132,共9页Navigation Positioning and Timing

摘　　要：Y波导集成光学器件(以下简称Y波导)作为光纤陀螺的核心部件,其可靠性对光纤陀螺整体的可靠性有很大影响。为了快速作出Y波导的可靠性及寿命估计,使用高加速寿命试验(HALT)的方法开展Y波导可靠性和寿命估计的研究,研究环境因素(高温、快速温变以及高湿等)对Y波导性能的影响,结果表明高温会显著影响Y波导性能,且Y波导的高温破坏极限为150℃,工作极限为130℃,主要影响的参数是插入损耗和分束比。使用120℃的条件进行Y波导的高加速寿命试验,得到Y波导在120℃的寿命约为1120 h,等效于25℃的93年寿命,并根据失效数量随时间的变化绘制出了可靠性浴盆曲线。完成了对Y波导的可靠性评估和寿命估计。Y waveguide integrated optical device(hereinafter referred to as Y waveguide)serves as the core component of fiber optic gyroscope(FOG),its reliability significantly effects the overall reliability of FOG.To quickly explore the reliability and life estimation of Y waveguide,highly accelerated life test(HALT)is used,and the influence of environmental factors(high temperature,rapid temperature changes,high humidity)on Y waveguide performance is studied.The result shows that the high temperature will significantly affect the performance of Y waveguide.Y waveguide's upper operating temperature limit(UOTL)is 150℃ and upper damaging temperature limit(UDTL)is 130℃,insertion loss(IL)and splitting ratio are mainly effected factors.Y waveguide is placed at 120℃ for HALT,the life of Y waveguide is 1120 h at 120℃,it is equivalent to 93 years at 25℃.According to the number of failure over time,reliability bath curve is plotted.Reliability assessment and life estimation of Y waveguide are completed.

关 键 词：可靠性 高加速寿命试验(HALT) Y波导 寿命估计 

分 类 号：TP202.1[自动化与计算机技术—检测技术与自动化装置]