Periodic rotation noise induced by the crosstalk between two beat-frequency signals in multi-oscillator ring laser gyros

被引：1

作者：

Lu, Guangfeng ^{[1
]}

Wang, Zhiguo ^{[1
]}

Fan, Zhenfang ^{[1
]}

Luo, Hui ^{[1
]}

机构：

[1] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China

来源：

JOURNAL OF OPTICS | 2014年 / 16卷 / 12期

基金：

美国国家科学基金会;

关键词：

multi-oscillator ring laser gyro; periodic rotation noise; crosstalk; beat-frequency signal;

D O I：

10.1088/2040-8978/16/12/125410

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Periodic rotation noise in the outputs of multi-oscillator ring laser gyros (MRLGs) is investigated in this paper for the first time. It is proved theoretically and experimentally that noise is induced by the crosstalk between two beat-frequency signals, which are combined from the left and right circularly polarized counter-propagating beams in MRLGs. Theoretical analysis and experimental results also indicate that the fundamental frequency of this noise is equal to the frequency difference between the two beat-frequency signals and the amplitude of the fundamental component is proportional to the crosstalk ratio between the two beat-frequency signals. Further, the amplitude of the nth-order component is proportional to the nth power of the crosstalk ratio.

引用

页数：6