双级单泵浦结构的高斯型掺铒光纤光源研制  

Development of Gaussian Erbium-Doped Fiber Source with Two-Stage Single Pump Structure

作　　者：王昕 廖城[1,2] 沈洁 范贤光 许英杰[1,2] Wang Xin;Liao Cheng;Shen Jie;Fan Xianguang;Xu Yingjie(School of Aerospace Engineering,Xiamen University,Xiamen 361000,Fujian,China;Key Laboratory of Sensor Technology of Fujian Provincial,Xiamen University,Xiamen 361000,Fujian,China)

机构地区：[1]厦门大学航空航天学院,福建厦门361000 [2]厦门大学福建省传感技术重点实验室,福建厦门361000

出　　处：《应用激光》2023年第2期120-126,共7页Applied Laser

基　　金：国家自然科学基金(21874113)。

摘　　要：高斯型掺铒光纤光源稳定性高,可有效减小光纤陀螺相位误差,从而提高光纤陀螺的测量精度。通过对掺铒光纤光源的经典结构进行理论分析,提出了由双程前向结构和单程后向结构复合而成的双级单泵浦结构,并对其进行光路结构仿真,以确定最佳的光路参数范围。泵浦输出波长和功率的稳定性直接影响光源的功率稳定性和平均波长稳定性,因此针对电流驱动型泵浦激光器设计了恒流驱动方案和恒温控制方案。试验结果表明,所研制的掺铒光纤光源在-45~65℃的温度范围内,全温功率变化率为8.27%,全温平均波长稳定性为1.7×10^(-6)K^(-1)。Gaussian doped fiber source has high stability,which can effectively reduce the phase error of FOG and improve the measurement accuracy of FOG.Based on the theoretical analysis of the classical structure of the doped fiber light source,a two-stage single-pump structure is proposed,which is composed of the double-way forward structure and the one-way backward structure,and the optical path structure simulation is carried out to determine the optimal optical path parameter range.The stability of pump output wavelength and power directly affects the power stability and average wavelength stability of the light source.Therefore,a constant current driving scheme and a constant temperature control scheme are designed for the current-driven pumped laser.Experimental results show that the power variation rate of the doped fiber light source is 8.27%,and the average wavelength stability is 1.7×10^(-6)K^(-1)in the temperature range of-45℃to 65℃.

关 键 词：激光器与激光光学 陀螺仪 掺铒光纤光源 双级单泵浦结构 恒流、恒温控制 

分 类 号：TN29[电子电信—物理电子学]