Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of elliptical core optical fiber

A core optical fiber and elliptical technology, which is applied in the field of preparation of elliptical core optical fiber, can solve the problems of high difficulty and many steps, and achieve the effect of low cost and simplified preparation process

Inactive Publication Date: 2021-10-26
HARBIN ENG UNIV
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the deficiencies in the preparation process of the traditional elliptical-core special optical fiber, such as: many steps, high difficulty, and large-scale optical fiber drawing equipment, and provides a method for manufacturing an elliptical-core optical fiber that can control the ellipticity of the core

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of elliptical core optical fiber
  • Preparation method of elliptical core optical fiber
  • Preparation method of elliptical core optical fiber

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] A method for preparing an elliptical-core optical fiber, using a device for heating the optical fiber such as a hydrogen-oxygen flame heating device, a graphite heating device or a laser heater, etc., to heat the area of ​​the optical fiber thin section, and at the same time using an electric precision displacement stage to apply pressure to the heated part. Small pulling force; at this time, the optical fiber sheet is in a molten state when heated. Due to the tension on the surface of the optical fiber, the material distribution of the sheet structure is rearranged, so that the structural cross-sectional shape of the optical fiber sheet changes from the overall shape to a circle. At the same time, the circular core becomes an elliptical core, resulting in an elliptical core fiber.

[0022] In the method for preparing an elliptical-core optical fiber, under the condition of a certain heating temperature, the ellipticity of the fiber core can be controlled by how much the...

Embodiment 1

[0023] Embodiment 1: A kind of preparation method of elliptical core optical fiber, its steps are as follows:

[0024] (1) Remove the coating layer of a section of single-mode optical fiber and wipe it clean with absolute ethanol, and then use an optical fiber polishing device to polish the cladding of the round core optical fiber, such as Figure 1 As shown, the single-mode optical fiber includes a cladding 1 and a core 2. The cladding 1 after melting has a width of about 60 μm and the melted parts are symmetrical to each other, forming a pre-processed molded product.

[0025] (2) Place the pre-processed product in step (1) on the high-temperature heating equipment, and fix the two ends on the optical fiber fixture on the electric translation table. In order to be heated evenly, place the cladding of the pre-processed product in a parallel and symmetrical position Placed at the center of the Ω-shaped graphite heating resistor and melted at a high temperature, the heating temp...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a preparation method of an elliptical core optical fiber, which comprises the following steps that firstly, a section of long round core optical fiber is taken, double-sided polishing is conducted on the optical fiber part without a protective layer by using an optical fiber polishing device, the optical fiber is ground into sheets, and the polishing depth condition of the optical fiber isobserved by using a microscopic observation device; a device for heating the optical fiber is used for heating the optical fiber sheet area, and meanwhile, an electric precision displacement table is used for applying small pulling force to a heating part; at the moment, the optical fiber sheet is heated to be in a molten state, due to the tension of the surface of the optical fiber, the material distribution of the sheet-shaped structure is rearranged, the structural section shape of the optical fiber sheet is changed into a circle from the whole, meanwhile, a round core is changed into an elliptical core, and the elliptical core optical fiber is obtained. According to the method, the core layer ellipticity of the elliptical core optical fiber can be accurately controlled, the material is the single-mode optical fiber, the acquisition is easy, the cost is low, and meanwhile, large manufacturing equipment such as an optical fiber drawing tower is not needed.

Description

technical field [0001] The invention belongs to the technical field of optical fiber preparation, and in particular relates to a method for preparing an elliptical core optical fiber, which can be applied to the fields of optical fiber communication, optoelectronic devices and optical fiber sensing. Background technique [0002] Fiber optic gyroscopes can measure the orientation of moving objects. They are widely used navigation instruments in the field of modern aerospace and have achieved great commercial success. In order to accurately measure the motion state of an object, the fiber optic gyroscope generally includes three sensing rings of polarization-maintaining optical fibers, and each ring corresponds to the required degree of freedom. The elliptical core fiber can be used as the core component of the fiber optic gyroscope due to its polarization-maintaining properties. Therefore, the elliptical core fiber has great potential in the application of fiber optic gyrosc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/15G02B6/024
CPCC03B37/15G02B6/024C03B2203/30
Inventor 马一巍苏春博李晓飏易杨耿涛孙伟民
Owner HARBIN ENG UNIV