Magnetic fluid-based tension-free hollow-core microstructure optical fiber ring winding method

A technology of microstructured optical fiber and winding method, which is applied in the directions of instruments, surveying and navigation, measuring devices, etc., can solve the problems of difficulty in matching the mechanical structure characteristics of hollow-core microstructured optical fibers, and achieve the effect of ensuring optical transmission characteristics and avoiding damage.

Active Publication Date: 2021-09-24
TIANJIN NAVIGATION INSTR RES INST
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tension control level in the traditional fiber loop winding method is difficult to match the mechanical structural characteristics of the hollow core microstructure fiber

Method used

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  • Magnetic fluid-based tension-free hollow-core microstructure optical fiber ring winding method
  • Magnetic fluid-based tension-free hollow-core microstructure optical fiber ring winding method
  • Magnetic fluid-based tension-free hollow-core microstructure optical fiber ring winding method

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Embodiment Construction

[0021] The structure of the present invention will be further described below in conjunction with the accompanying drawings and through embodiments. It should be noted that this embodiment is illustrative rather than limiting.

[0022] figure 1 It is a cross-sectional schematic diagram of a hollow-core microstructure optical fiber. The white area in the figure is the proportion of air, and the black area represents the silica microstructure. The wall thickness of the internal microstructure unit is on the order of nanometers. It is connected to The outer large silica structure cladding is anchored. It can be seen from the cross-sectional schematic diagram that the hollow-core microstructured fiber has two obvious characteristics: one is that the air inside the fiber has a large proportion; the other is that the mechanical strength of the connection between the microstructure unit and the cladding is relatively weak.

[0023] figure 2 It is a schematic diagram of the magnet...

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Abstract

The invention relates to a magnetic fluid-based tension-free hollow-core microstructure optical fiber ring winding method. The method comprises the following steps of: 1, injecting magnetic fluid into a hollow-core microstructure optical fiber before winding so as to fill an area occupied by air; 2, dividing the hollow-core microstructure optical fiber filled with the magnetic fluid into a section A and a section B which are equal from the middle point, and winding the section A and the section B on two wire supply wheels respectively in advance; then, arranging a magnetic force generating device in the axis of the annular winding framework, adsorbing magnetic fluid in the hollow microstructure optical fibers through magnetic force, fixing the midpoints of the hollow microstructure optical fibers to the intersection of a wheel shaft of the winding framework and a wheel edge on one side, and then stacking the hollow microstructure optical fibers sequentially layer by layer according to a preset symmetrical winding method based on magnetic force guidance, coating the curing colloid on the optical fiber in the process of magnetically adsorbing the hollow-core microstructure optical fiber; and 3, discharging the magnetic fluid, and curing the hollow-core microstructure optical fiber ring. According to the invention, the damage to the micro-nano structure body of the hollow-core micro-structure optical fiber caused by the tensile force in the traditional winding method is avoided.

Description

technical field [0001] The invention belongs to the technical field of optical fiber gyroscopes, and relates to a method for winding an optical fiber ring, in particular to a method for winding an optical fiber ring with a tension-free hollow core microstructure based on magnetic fluid. Background technique [0002] Fiber optic gyroscopes have the advantages of high precision potential and high reliability, and are expected to replace electrostatic gyroscopes and laser gyroscopes as mainstream inertial components for large surface ships and submarines. However, in long-duration and high-precision applications, a variety of technical measures (such as temperature control, multiple magnetic shielding, and airtight packaging, etc.) have to be adopted for the long-endurance fiber optic gyroscope to improve the environmental adaptability of the gyroscope, but the system volume efficiency ratio is reduced. . At present, the traditional polarization-maintaining optical fiber is th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C19/72
CPCG01C19/722
Inventor 李茂春严飞梁鹄马骏李凡惠菲
Owner TIANJIN NAVIGATION INSTR RES INST
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