Y波导温致半波电压特性对谐振式光纤陀螺的影响  

Effect of temperature-induced half-wave voltage characteristics of Y-waveguide modulator on resonant fiber optic gyroscope

作　　者：苏政澄 李俊[1] 吴凡[1] 蓝士祺 闫博 SU Zhengcheng;LI Jun;WU Fan;LAN Shiqi;YAN Bo(National Key Laboratory of Science and Technology on Aircraft Control,AVIC Xi'an Flight Automatic Control Research Institute,Xi'an 710076,China)

机构地区：[1]西安飞行自动控制研究所飞行器控制一体化技术国防科技重点实验室,陕西西安710076

出　　处：《应用光学》2024年第2期461-466,共6页Journal of Applied Optics

基　　金：装备预研基金项目(61409230217)。

摘　　要：针对基于宽谱光源的谐振式光纤陀螺(resonant fiber optic gyroscope, RFOG)中Y波导调制器半波电压的温度影响,开展了Y波导温致半波电压特性对谐振式光纤陀螺影响的研究。建立了Y波导温致半波电压特性对基于宽谱光源的谐振式光纤陀螺系统标度因素的影响规律模型,模型表明:Y波导调制器的温致半波电压特性会导致基于宽谱光源的谐振式光纤陀螺系统的标度因素发生变化。搭建了用于宽谱光源的Y波导调制器半波电压测试系统,系统测试精度达1 mV。实验测试了全温范围内Y波导的温致半波电压特性在基于宽谱光源的谐振式光纤陀螺系统中的影响,测试结果表明:Y波导调制器的半波电压与温度呈线性负相关;Y波导调制器的温致半波电压特性导致基于宽谱光源的谐振式光纤陀螺系统的标度因素的最大相对变化误差为1 266.01×10^(-6)。Aiming at the temperature effect of half-wave voltage of Y-waveguide modulator on resonant fiber optic gyroscope(RFOG)based on broad spectrum light source,the effect of temperature-induced half-wave voltage characteristics of Y-waveguide modulator on RFOG was studied.The effect law model of voltage characteristics on scaling factors of RFOG system based on broad spectrum light source was established.The model shows that the temperature-induced half-wave voltage characteristics of Y-waveguide modulator will lead to the change of the scaling factor of RFOG system based on broad spectrum light source.A half-wave voltage measurement system of Y-waveguide modulator used for broad spectrum light source was established,and the measurement accuracy of the system reached 1 mV.The influence of the temperature-induced half-wave voltage characteristics of Y-waveguide in the full temperature range in RFOG system based on broad spectrum light source was tested by experiment.The test results show that the half-wave voltage of Y-waveguide modulator is linearly and negatively correlated with temperature.The temperature-induced half-wave voltage characteristics of the Y-waveguide modulator result in a maximum relative variation error of 1266.01×10-6 in the scale factor of the RFOG system based on the broad spectrum light source.

关 键 词：Y波导调制器 谐振式光纤陀螺 宽谱光 温度 半波电压 

分 类 号：TN253[电子电信—物理电子学] V241.622[航空宇航科学与技术—飞行器设计]