Fiber-optic gyroscope optical path welding performance detection method

A technology of fiber optic gyroscope and detection method, which is applied to Sagnac effect gyroscopes, measuring devices, instruments, etc., can solve problems such as effective evaluation of assembly performance, improve detection and troubleshooting efficiency, reduce the probability of abnormalities, and strengthen restrictions Effect

Active Publication Date: 2020-04-10
XIAN AEROSPACE PRECISION ELECTROMECHANICAL INST
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The main purpose of the present invention is to solve the technical problem that the high-precision fiber optic gyroscope in the prior art cannot effectively evaluate the assembly performance after the assembly is completed, and to provide a method for evaluating the optical path fusion performance of the fiber optic gyroscope

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  • Fiber-optic gyroscope optical path welding performance detection method
  • Fiber-optic gyroscope optical path welding performance detection method
  • Fiber-optic gyroscope optical path welding performance detection method

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Embodiment Construction

[0031] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention and the accompanying drawings. Apparently, the described embodiments do not limit the present invention.

[0032] A method for detecting the fusion splicing performance of the optical fiber gyro optical path, which first detects the fusion splicing point between the polarization maintaining fiber and the polarization maintaining optical fiber that has the greatest influence, and then detects other fusion splicing points, without removing all components in the optical fiber gyroscope optical path during detection , using the spectrum of the spectrometer can intuitively judge whether there is an abnormality in the corresponding welding point. The detection method is intuitive and simple, easy to operate, and can be widely used in the field. The specific detection method is as follows:

[0033] S1, first complete the a...

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Abstract

The invention belongs to a fiber-optic gyroscope welding performance evaluation method, and provides a fiber-optic gyroscope optical path welding performance detection method, in order to solve the technical problem that the assembling performance of a high-precision fiber-optic gyroscope cannot be effectively evaluated after assembling is completed in the prior art. According to the fiber-optic gyroscope optical path welding performance detection method, a spectrograph is connected to a welding point between 2*2 couplers and a photoelectric detector; whether a welding point between polarization maintaining optical fibers is abnormal or not is judged according to a spectrum displayed on a spectrograph; the welding quality of the welding point can be effectively evaluated after assembly iscompleted, all devices do not need to be disassembled, the welding point can be welded again after the abnormal welding point is determined, and the fiber-optic gyroscope optical path welding performance detection method is simple, visual and easy to test and analyze on site.

Description

technical field [0001] The invention belongs to a method for evaluating the welding performance of an optical fiber gyroscope, in particular to a method for detecting the welding performance of an optical fiber gyroscope. Background technique [0002] At present, high-precision fiber optic gyroscopes have been widely used in engineering applications. like figure 1 As shown, the high-precision fiber optic gyro optical path is mainly composed of AES light source 01, 1*3 coupler 02, 2*2 coupler 03, Y waveguide 04, fiber optic ring 05 and photodetector 06. When assembling the above devices, The pigtails of each component of the fiber optic gyroscope need to be welded accordingly. After the welding is completed, the pigtails are coiled and glued to cure. After the curing is completed, relevant tests need to be carried out. [0003] During the test process, the fiber optic gyroscope often has out-of-tolerance phenomena. After the fiber optic gyroscope is found to be out of toler...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00G01C19/72
CPCG01C19/72G01C25/00
Inventor 汪刚黄博李云娇江维洪伟娄少峰张培赵永亮
Owner XIAN AEROSPACE PRECISION ELECTROMECHANICAL INST
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