Fiber optic gyroscope uses optical fiber in the optical path to measure the rotation speed. When an optical fiber rotating around an optical fiber rotates, the propagation of light will shift due to the change in the optical path difference, and this phase shift can reflect the rotation speed. Fiber optic gyroscopes are suitable for high-precision and stable measurements, such as inertial navigation, attitude control, etc.
Laser gyroscopes split the laser beam into two beams and transmit them in two perpendicular directions. After rotation, the two beams of light will form an interference pattern. By measuring the changes in the interference fringes, the rotation speed can be obtained. Laser gyroscopes are suitable for applications with low precision requirements, such as vehicle navigation, pitch steering control, etc.
Fiber optic gyroscopes have high accuracy and can achieve extremely high angular stability and long-term stability, but the corresponding cost is also high.
In comparison, the accuracy of laser gyroscope is relatively low, but the cost is also relatively low.
Fiber optic gyroscope is suitable for high-precision and long-term stable measurement scenarios, such as navigation, aerospace, ship control, etc.
Laser gyroscope is suitable for scenarios with low accuracy requirements and low cost requirements, such as gearboxes, steering systems, etc.
In general, fiber optic gyroscopes and laser gyroscopes are used to measure angular velocity and angular displacement, but their working principles and scope of application are different. Fiber optic gyroscopes are suitable for high-precision and stable measurement scenarios, and the price is relatively high; laser gyroscopes are suitable for application scenarios with low accuracy requirements and low cost requirements.
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