Limits imposed by nonlinear coupling on rotation sensitivity of a semiconductor ring laser gyroscope

被引：6
|
作者：
Khandelwal, Arpit [1 ]
Syed, Azeemuddin [1 ]
Nayak, Jagannath [2 ]
机构：
[1] Int Inst Informat Technol, Ctr VLSI & Embedded Syst Technol, Hyderabad 500032, Andhra Pradesh, India
[2] DRDO, Inertial Syst Grp, Res Ctr Imarat, Hyderabad 500069, Andhra Pradesh, India
来源：
APPLIED OPTICS | 2016年 / 55卷 / 19期
关键词：
GYRO; SENSOR; MODEL;
D O I：
10.1364/AO.55.005187
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The sensitivity of a monolithically integrated semiconductor ring laser gyro is severely limited by the high value of the lock-in threshold. In this work, we calculate the lock-in threshold using perturbation theory and coupled mode theory analysis. It is shown that gyro sensitivity is limited to an input rotation rate of 10(8) deg / h due to nonlinear coupling between the countertraveling modes. This coupling arises due to the backreflection of modes from moving index gratings, induced by rotation. Lock-in threshold is directly proportional to the strength of nonlinear coupling and spatial overlap of the modes' energy densities with periodic index perturbations. (C) 2016 Optical Society of America
引用
收藏
页码：5187 / 5191
页数：5
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