TEL: +8618992836912
Categories
Exchange

+86 189 9283 6912
+86 29 88767352 
info@north-star-tech.com
2932654651
18992836912
20A, Ruixin Building, No. 25 Gaoxin Road, Xi'an

Knowledge
Home > Knowledge > Content
Fiber Optic Gyroscope - an important part of modern navigation
Oct 19, 2018

The Sagnac effect based on the orientation change is called a fiber optic gyroscope. As a kind of fiber optic sensor, fiber optic gyroscope has the advantages of high sensitivity, compact structure and reliable operation. Fiber optic gyroscope has completely replaced mechanical traditional gyroscope in many fields and has become a key component in modern navigation instruments. .


In recent decades, with the rapid development of optical fiber communication technology and optical fiber sensing technology, fiber optic gyro technology has also made great breakthroughs. Fiber optic gyroscopes have gradually become mainstream gyroscopes in the field of inertial technology research. The fields of navigation, space and space technology all have high application value. With the continuous development of inertial navigation technology, fiber optic gyroscopes will also play a better role in these areas and create more and better value.


What is fiber optic gyroscope?

Since the fiber optic gyroscope is mentioned, it is necessary to introduce the gyroscope first. What is a gyro, a device used to measure inertial space-sensitive angular motion, is widely used in military and civilian equipment. The fiber optic gyroscope is an optical inertial measurement component. It has no moving parts. Compared with the inertial measurement device, it has received sufficient attention in the inertial field with its flexible structure, high reliability and sensitivity. Recognition.


Fiber optic gyroscope operation

Fiber optic gyroscopes use two beams from the laser to be injected into the same fiber, but in the opposite direction, the beam resisting rotational travel experiences a slightly shorter path delay than the other beam due to the Sagnac effect. The resulting differential phase shift is measured by interferometry to convert one component of the angular velocity into an offset of the interference pattern of the photometric measurement.


The beam splitting optics emit light from the laser diode into two waves propagating in a clockwise and counterclockwise direction through a coil of multiple turns of fiber. The strength of the Sagnac effect depends on the effective area of the closed path: this is not the geometric area of the simple loop, but is enhanced by the number of turns in the coil. The fiber optic gyroscope was first proposed by Vali and Shorthill in 1976. The concept of passive interferometer type fiber optic gyroscopes and newer, passive ring resonator fiber optic gyroscopes is being developed by many companies and institutions around the world.


Application of fiber optic gyroscope

Fiber optic gyroscopes can be used for fiber optic gyroscope compasses or for inertial navigation systems for many missiles. Fiber optic gyroscopes can also be navigation aids in remotely operated vehicles and autonomous underwater vehicles. Fiber optic gyroscopes can also be used for measurements.


Compared with the traditional gyroscope, it has the following advantages: small size, all solid state, light weight, anti-electromagnetic interference, quick start-up structure and simple structure. In the field of inertial navigation, the fiber optic gyroscope will have a wider application space. In addition, in the future, fiber optic gyroscopes will focus on high precision, high stability, low cost, easy maintenance, strong anti-interference, product diversification, and large-scale development to play more roles and create more value.


  • Exchange

    +86 189 9283 6912
    +86 29 88767352 
    info@north-star-tech.com
    2932654651
    18992836912
    20A, Ruixin Building, No. 25 Gaoxin Road, Xi'an

  • Categories
  • Copyright © Xi'an North Star M&C Tech. Co.,Ltd All Rights Reserved.