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Optical device matching scheme for fiber-optic gyroscopes

A fiber optic gyroscope and spectral matching technology, applied in the direction of Sagnac effect gyroscope, etc., can solve the problems of optical fiber type mismatch, spectrum mismatch, optical power mismatch, etc., to improve yield, reduce optical noise, improve The effect of performance indicators

Inactive Publication Date: 2017-04-05
北京浦丹光电股份有限公司
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Problems solved by technology

[0026] The purpose of the present invention is to provide a matching scheme for optical devices used in fiber optic gyroscopes, which solves the problems of optical fiber type mismatch, optical power mismatch, optical polarization mismatch, Various problems such as spectral mismatch have comprehensively solved the difficult problems such as low yield rate, poor performance index, and poor stability of assembly process that have plagued the fiber optic gyroscope industry for many years from various levels such as theory, engineering, technology, and product quality.

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Embodiment Construction

[0094] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0095] A matching scheme for optical devices for fiber optic gyroscopes, including the following four parts:

[0096] 1. Fiber type matching; 2. Optical power matching; 3. Light wave polarization matching; 4. Spectrum matching;

[0097] (1) The optical fiber type matching scheme:

[0098] Mainly achieve the same mode field diameter and outer diameter of the optical fiber of the optical device, so as to reduce the transmission noise of the optical path, such as reducing the echo reflection interference, reducing the fusion loss, increasing the polarization extinction ratio, etc.; to improve the alignment accuracy of the fiber fusion in the process assembly , and improve system reliability; including: broadband light source, integrated optical multifunctional modulator MIOC, polarization maintaining fiber splitter PMFS and detector component P...

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Abstract

The invention relates to an optical device matching scheme for fiber-optic gyroscopes. The matching technology adopts an interferometric fiber optic gyroscope optical path design theory, realizes optical fiber type matching, optical power matching, optical polarization matching and spectrum matching, well solves the problems of low finished product rate, low performance index, unstable process, low production efficiency and other difficulty problems that are caused by optical device mismatching and trouble the fiber-optic gyroscope industry for years from theory, engineering, technology, product quality and other levels.

Description

technical field [0001] The patent of the present invention relates to the technical field of interferometric optical fiber sensing, and proposes a matching scheme for optical devices used in optical fiber gyroscopes. Lightwave polarization state matching and spectral matching, from the aspects of theory, engineering, process, product quality, etc., have solved the inherent low yield and performance problems caused by the mismatch of optical devices that have plagued the fiber optic gyroscope industry for many years. Difficult problems such as low indicators, unstable process, and low production efficiency. Background technique [0002] The fiber optic gyroscope has no movable parts and is an all-solid-state gyroscope. It has the characteristics of fast start-up, high detection sensitivity, high resolution, wide dynamic range, strong adaptability to environmental temperature, and high reliability of mechanical shock and vibration. It is the current inertial angular velocity s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C19/72
CPCG01C19/72
Inventor 薛挺耿凡向美华毛健姜恩颖
Owner 北京浦丹光电股份有限公司
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