掺铒光纤谐振腔陀螺的谐振腔设计  

Design of the Resonant Cavity in Erbium-Doped Fiber Resonator Gyroscopes

作　　者：田野 刘文耀[1] 张伟[1] 唐军[1] 刘俊[1] Tian Ye;Liu Wenyao;Zhang Wei;Tang Jun;Liu Jun(Key Laboratory of Instrumentation Science &Dynamic Measurement of Ministry of Education,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室

出　　处：《微纳电子技术》2019年第1期34-39,共6页Micronanoelectronic Technology

基　　金：国家自然科学基金资助项目(51635011,61571406,51727808);山西省“1331工程”重点学科建设计划经费资助项目;中北大学2016年校科研基金资助项目(110248-28140)

摘　　要：光纤谐振腔作为谐振式光学陀螺的核心传感器件,其性能直接决定了谐振式光学陀螺的灵敏度。目前使用的光纤谐振腔存在着品质因数偏低的问题,极大地限制了谐振式光学陀螺极限灵敏度的提升。将掺铒光纤引入到光纤谐振腔中并外加高稳定性的泵浦激光器形成掺铒光纤谐振腔,从而有效提升了谐振腔的品质因数。通过对激光功率、掺铒光纤长度等参数的实验探索,确定了最佳的掺铒光纤谐振腔的设计参数,实现了应用于谐振式光学陀螺品质因数为1.44×10^9的掺铒光纤谐振腔。搭建了基于掺铒光纤腔的谐振式光学陀螺测试系统,经实验测试该系统的零偏稳定性为0.077 5°/s,验证了掺铒光纤腔在陀螺系统中的应用,为新型角速度测量技术提供了新的研究思路和发展方向。The fiber resonator is the core sensing device in the resonant optical gyroscope,its performances are crucial to the sensitivity of the resonant optical gyroscope.The quality factor of the current fiber resonator is low,which greatly limits the improvement of the extreme sensitivity for the resonant optical gyroscope.The erbium-doped fiber was introduced into the fiber resonator and a pump laser with high stability was subsequently added to form an erbium-doped fiber resonator,and the quality factor of the resonator was effectively improved.The optimum design parameters of the erbium-doped fiber resonator were determined by the experimental exploration of the laser power and length of erbium-doped fiber.The erbium-doped fiber resonator with the quality factor of 1.44×109 used for the resonant optical gyroscope was achieved.The test system of the resonant optical gyroscope based on the erbium-doped fiber resonator was built.The experimental test results show that the zero-bias stability of the system is 0.077 5°/s,verifying the application of the erbium-doped fiber resonator in the gyroscope system and providing a new research idea and development direction for the new angular velocity measurement technology.

关 键 词：谐振式光学陀螺 掺铒光纤 谐振腔 品质因数 零偏稳定性 

分 类 号：V241.5[航空宇航科学与技术—飞行器设计] TH703[机械工程—仪器科学与技术]