开环光纤陀螺的光源强度噪声抑制方法研究  

Research on Suppression Methods of Light Source RIN in Open Loop FOG

作　　者：陈宇中[1] 张学亮[1] 熊水东[1] 张伟[1] 胡永明[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,长沙410073

出　　处：《半导体光电》2010年第5期821-823,共3页Semiconductor Optoelectronics

摘　　要：光纤陀螺系统中的宽带光源会产生光源相对强度噪声,要提高陀螺性能就必须对其加以抑制。由于开环光纤陀螺使用正弦波调制,相对强度噪声不能直接由陀螺信号相减消除。针对基于正弦波调制的开环光纤陀螺系统信号差分电路放大的特点,设计了一种实现强度噪声抑制的新算法。经实验验证,该算法有效,可使开环光纤陀螺的随机游走减小18%。Broadband light sources,commonly used in fiber optic gyroscope（FOG） systems,can produce relative intensity noise（RIN）which must be suppressed in order to improve the performance of FOG.Because of the sin modulation used in open loop FOG,RIN can not be susbtracted directly.In this paper,a noval algorithm is designed to subtract RIN of the open loop FOG with differencial detector.Corresponding experiments were carried out and the results show that the new algorithm is effective in subtracting RIN and the random walk of the open loop FOG can be decreased by 18%.

关 键 词：开环光纤陀螺 光源强度噪声 噪声抑制 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]