Optical path device of fiber-optic gyroscope and optical fiber coiling method

Abstract

The invention provides an optical path device of an optical fiber gyroscope and an optical fiber coiling method, the optical path device comprises an optical fiber ring, a waveguide, a coupler, a detector, a light source and a middle hollow annular fiber coiling structure, the optical fiber ring and the annular fiber coiling structure are arranged in parallel; the waveguide, the coupler, the detector and the light source are all arranged at the middle hollow position of the annular fiber coiling structure; and tail fibers among the optical fiber ring, the waveguide, the coupler, the detector and the light source are coiled on the annular fiber coiling structure. Therefore, through the optical path device of the fiber-optic gyroscope and the device tail fiber single-layer symmetric coiling method for improving the optical path symmetry of the fiber-optic gyroscope through optical fiber coiling, the problem of gyroscope performance deterioration caused by improper treatment of the device tail fiber during assembly of the fiber-optic gyroscope is solved.

Description

Technical field [0001] The present application relates to the technical field of fiber optic gyro, and more particularly to an optical path device and a fiber disk winding method of fiber optic gyro. Background technique [0002] As a new inertial instrument, the fiber optic gyroscope is widely used in the field of missiles, airplanes, ships and vehicles due to their precision, power consumption, quality and other aspects. With the wide application of fiber optic gyro, the number of fiber optic gyro is increasing, and performance requirements are getting higher and higher. As the foundation of SAGNAC effect, optical path performance directly determines the gyro performance. The optical path is composed of the optical device and its tailib through the welding connection. With the diversification of demand, the fibergroup performance, functional requirements are also diversified, and the product technology status needs to change often, resulting in randomness of optical paths. In o...

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Problems solved by technology

[0004] In view of this, the purpose of this application is to provide an optical path device and an optical fiber coiling method for a fiber optic gyroscope, through which the optical path device for a fiber optic gyroscope and the optical fiber coiling improve the optical path symmetry of the fiber optic gyroscope. Problem with gyro performance degradation due to improper handling of device pigtails during assembly

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