Data Sheet

Instruction of LS-FOG-01 Series Uniaxial Optical Fiber Gyroscope V1.0
2018-04-24 深圳市镭神智能系统有限公司 4 / 11
Leishen Intelligent System Co.,LTD.
1 Overview
The document specifies the requirements and methods to use and maintain LS-FOG-01
Uniaxial optical fiber gyroscope (“gyroscope”).
2 Introduction to Product
2.1 Operating principle, function and scope of application
2.1.1 Operating principle
LS-FOG-01 Uniaxial optical fiber gyroscope is an inertial angular rate sensor based on optical
Sagnac effect, which is used to measure the angular rate of the carrier orbiting around the sensitive
axis of the gyroscope. The unit of angular rate sensing of the gyroscope is fiber loop. A close loop
detection circuit is used to extract the fiber loop sensitive phase difference of light spread
clockwise and counterclockwise and caused by external physical angular velocity. In the meantime,
phase difference signal is translated into voltage signal for close loop feedback and control,
realizing signal modulation and demodulation, so as to detect angular rate signal with high
precision.
2.1.2 Function
This product is composed of optical regular velocity sensitive unit and signal detection,
providing information about Uniaxial angular rate and internal temperature information.
2.1.3 Scope of application
This product is mainly applicable to seeker, inertial navigation system, pilotless aircraft and
Servo stabilization system etc.
2.2 Composition
The product is mainly composed of:
a) Optical path unit: including SLD illuminant, fiber loop, integrated optical phase
modulator, optical fiber coupler and photoelectric detector;
b) Circuit unit: illuminant-driven circuit, detection and control signal circuit board;
c) Gyro structural part.
d)
2.3 Dimension and mounting dimension