| 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1 120 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。 |
| 关键词: 可靠性 高加速寿命试验（HALT） Y波导 寿命估计 |
| DOI： |
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| 基金项目: |
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| Test study on reliability of Y waveguide for fiber optic gyroscope based on highly acceleration life test |
| SHI Yunlai,XIANG Qiang,YU Huaiyong,FENG Zhe,WU Yanji |
| (Beijing Institute of Automatic Control Equipment， Beijing 100074， China) |
| Abstract: |
| 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 1 120 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. |
| Key words: Reliability Highly accelerated life test（HALT） Y waveguide Life estimation |
