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

Device and method for eliminating end reflected light noise of fiber and optical cable

A technology of reflected light and fiber end face, which is applied in the coupling of optical waveguides, light guides, optics, etc., can solve the problems of adverse effects on the application prospects of optical fiber sensors, restrict the application space of optical fiber sensors, and affect the measurement accuracy of optical fiber sensors, etc., so as to save the number of settings , Improve the test accuracy, improve the effect of sensing sensitivity

Inactive Publication Date: 2017-05-10
北京天海蓝业科技有限公司
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, for optical fibers used in sensitive element or functional optical fiber sensors, the optical signal transmitting end and the optical signal detecting end are usually set at the same end of the optical fiber, but only a simple cross-section fixing process is made for the other end of the optical fiber , or even without processing; in actual use, optical noise signals that interfere with the measurement results are likely to appear in the feedback optical signals captured from the optical signal detection end, and these optical noise signals will affect the measurement accuracy of the fiber optic sensor to a certain extent; in order to overcome This defect, the means of sacrificing the measurement accuracy is used in the prior art to cover up this technical defect, but the existence of this technical defect always restricts the application space of optical fiber sensors in the field of precision measurement, and also affects the future application prospects of optical fiber sensors. caused adverse effects

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
  • Device and method for eliminating end reflected light noise of fiber and optical cable
  • Device and method for eliminating end reflected light noise of fiber and optical cable
  • Device and method for eliminating end reflected light noise of fiber and optical cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] like figure 1 As shown, the present invention provides a device for eliminating reflected light noise at the end of an optical fiber, comprising: a shading tube 100 with one end closed and a curable two-component epoxy resin glue 200; the shading tube 100 is saturated and filled with After curing the two-component epoxy resin glue 200, glue it on the end of the optical fiber 300; Filled with the heat curing two-component epoxy resin glue.

[0036]When assembling, fill the liquid solidified thermal two-component epoxy resin glue in the shade tube closed at one end; insert the end of the optical fiber into the solidified thermal two-component epoxy resin glue, and the optical fiber is inserted into the end face of one end after insertion It is not in contact with the inner wall and bottom of the hood barrel; keep the relative position of the optical fiber relative to the hood barrel and let it stand until the heat-curing two-component epoxy resin glue is completely solid...

Embodiment 2

[0043] figure 2 As shown, on the basis of Embodiment 1, this embodiment further provides a device for eliminating the reflected light noise at the end of the optical fiber cable, including the device GXZ for eliminating the reflected light noise at the end of the optical fiber, and also includes the quick adhesive 400 and one end closed protection Cover tube 500; the protective cover tube 500 is saturated and filled with the quick adhesive 400, and then glued to the end of the optical cable 600; the optical fiber 300 contained in the end of the optical cable 600 is provided with the said elimination of reflected light at the end of the optical fiber means of noise; the end face of the end of the optical cable is located in the protective cover barrel.

[0044] Preferably, in a preferred technical solution of this embodiment, the protective cover cylinder is a metal pipe.

[0045] Preferably, in a preferred technical solution of this embodiment, the protective cover cylinder ...

Embodiment 3

[0052] On the basis of the above-mentioned embodiments, the present invention also provides a method for eliminating optical noise reflected from an optical fiber end face. The method includes the following steps:

[0053] Saturated and filled with liquid curable and heat-curable two-component epoxy resin glue in the shade barrel closed at one end;

[0054] Insert the end of the optical fiber into the curable two-component epoxy resin glue. After insertion, the end face of the inserted end of the optical fiber does not contact the inner wall and bottom of the hood;

[0055] Keep the relative position of the optical fiber relative to the hood barrel and let it stand until the heat-curing two-component epoxy resin glue is completely solidified.

[0056] It should be noted that the number of optical fibers inserted into the same shading tube in this method is not limited. When multiple optical fibers exist side by side, gluing multiple optical fibers into the same shading tube at...

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

PropertyMeasurementUnit
The inside diameter ofaaaaaaaaaa
Outer diameteraaaaaaaaaa
The inside diameter ofaaaaaaaaaa
Login to View More

Abstract

The invention discloses a device and method for eliminating the end reflected light noise of a fiber and an optical cable. The device for eliminating the end reflected light noise of the fiber includes a light shielding cylinder having one closed end and a solid thermalized dual-component epoxy resin glue, after the light shielding cylinder is glued to the end of the fiber after being saturatedly and fully filled with the solid thermalized dual-component epoxy resin glue, the fiber is arranged on the end face in the light shielding cylinder, and the solid thermalized dual-component epoxy resin glue fills between the inner wall and the cylinder bottom of the light shielding cylinder. The device for eliminating the end reflected light noise of the optical cable includes the device for eliminating the end reflected light noise of the fiber and further includes a rapid bonding agent and a protective cover cylinder having one closed end, the protective cover cylinder is glued to the end of the optical cable after being saturatedly and fully filled with the rapid bonding agent, any one fiber included by the optical cable end is provided with the device for eliminating the end reflected light noise of the fiber, and the end face of the optical cable end is arranged in the protective cover cylinder. The device and method can effectively eliminate the reflected noise of the light end and improve the measurement precision of the light reflection signal.

Description

technical field [0001] The invention relates to the technical field of optical fiber filtering, in particular to a device for eliminating reflected light noise at the end of an optical fiber. Background technique [0002] When the optical fiber changes in external environmental factors, such as temperature, pressure, electric field, magnetic field, etc., its light transmission characteristics will change. By measuring the change of the optical phase or light intensity in the optical fiber, the change of the measured physical quantity can be calculated. Sensors made using this feature are called sensitive element or functional fiber optic sensors. The light beam of the point light source of the laser diffuses into a parallel wave, which is divided into a reference light path and a measurement light path by a beam splitter. External parameters (temperature, pressure, vibration, etc.) cause changes in the length of the fiber and changes in the optical phase of the phase, result...

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
IPC IPC(8): G02B6/26
CPCG02B6/262
Inventor 王明陶
Owner 北京天海蓝业科技有限公司