An Analysis Method of Factors Affecting the Temperature Stability of Optical Fiber Environmental Polarization Capability

Abstract

The invention discloses an analysis method for factors affecting the temperature stability of the environmental protection polarization capability of an optical fiber. Firstly, a white light interferometer is used to test the polarization coupling distribution of the fiber ring at different temperatures. According to the optical path difference generated by the two orthogonal polarization axes of the fiber ring at different temperatures, the variation characteristics of the fiber birefringence with the fiber temperature are obtained, that is, the internal factors The influence of the temperature stability of the polarization capability of the fiber ring; the variation law of the average polarization coupling amplitude of the fiber ring at different temperatures is calculated, and the influence of the overall external factors of the fiber is analyzed; through the change law of the coupling amplitude of the large polarization coupling point in the polarization coupling distribution with temperature, The external local factors of the optical fiber that affect the temperature stability of the environmental protection bias capability of the optical fiber are analyzed.

Description

technical field [0001] The invention belongs to the field of optical fiber gyroscopes, and in particular relates to an analysis method for factors affecting the temperature stability of the environmental protection polarization capability of an optical fiber. Background technique [0002] Fiber optic gyroscopes have been widely used in inertial navigation and control fields due to their small size, light weight, no rotating parts, and flexible structural design. The fiber optic ring is a sensitive part of the fiber optic gyroscope. The currently widely used all polarization maintaining and hybrid polarization fiber optic gyroscope optical path schemes all use the polarization maintaining fiber ring to suppress the non-reciprocity error of the gyroscope polarization, so as to improve the zero-bias stability of the fiber optic gyroscope. Therefore, the polarization-maintaining ability of the fiber ring is an important parameter that affects the performance of the fiber optic g...

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Problems solved by technology

[0003] In view of the above situation, the present invention provides an analysis method for the influencing factors of the temperature stability of the environmental bias ability of the optical fiber to solve the problem that the influencing factors of the temperature stability of the environmental bias ability of the optical fiber are difficult to determine

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