一种基于微波谐振测量Sagnac效应的新方案  

A new scheme of measuring Sagnac effect based on microwave resonant

作　　者：吴穹[1] 于晋龙[1] 王菊[1] 王文睿[1] 贾石[1] 黄港膑 黑克非 李丽娟[1] 

机构地区：[1]天津大学电子信息工程学院,光纤通信实验室,天津300072

出　　处：《物理学报》2015年第4期161-166,共6页Acta Physica Sinica

基　　金：国家重点基础研究发展计划(批准号:2012CB315704);高等学校博士学科点专项科研基金(批准号:20120032130010);国家自然科学基金(批准号:61205061,61405142,61427817)资助的课题~~

摘　　要：目前光学陀螺的主要工作原理是Sagnac效应,如何提高Sagnac效应的测量精度是提高陀螺精度的一个重要研究课题.传统的光学陀螺利用光短波长的特性来提高检测精度.但考虑到微波的相位(频率)检测精度远高于光波的相位(频率)检测精度,如果能够利用微波实现Sagnac效应的检测,就能得到比光学陀螺更高的检测精度,从而为实现高精度的微波陀螺提供了可能.利用基于光电振荡器的光载微波结构实现了微波Sagnac效应的检测.实验结果证明了微波检测Sagnac效应的可行性,为将来实现高精度的微波谐振陀螺打下基础.The main principle of the existing optical gyroscope is based on the Sagnac effect. How to improve the measurement accuracy of the Sagnac effect is an important research topic of improving the gyro accuracy. The traditional optical gyro uses the short wavelength characteristic of light to improve the detection accuracy. But when considering the fact that the detection accuracy of the microwave phase/frequency is much higher than that of light wave phase/frequency, if the microwave can be used to detect the Sagnac effect, the detection accuracy higher than optical gyro accuracy can be obtained, which makes it possible to achieve high-accuracy microwave gyro. The Sagnac effect is detected by using the optoelectronic oscillator based light-carrying microwave structure. Experimental results prove the feasibility of detecting Sagnac effect by using microwave, which lays the foundation for realizing the high-precision microwave resonant gyroscope in the future.

关 键 词：光电振荡器 Sagnac效应 微波谐振陀螺 

分 类 号：V241.5[航空宇航科学与技术—飞行器设计]