KR20110103013A - Method and apparatus for fusion splicing optical fibers - Google Patents

Method and apparatus for fusion splicing optical fibers Download PDF

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Publication number
KR20110103013A
KR20110103013A KR1020100022108A KR20100022108A KR20110103013A KR 20110103013 A KR20110103013 A KR 20110103013A KR 1020100022108 A KR1020100022108 A KR 1020100022108A KR 20100022108 A KR20100022108 A KR 20100022108A KR 20110103013 A KR20110103013 A KR 20110103013A
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KR
South Korea
Prior art keywords
discharge
optical fiber
fusion splicing
magnetic field
arc
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KR1020100022108A
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Korean (ko)
Inventor
서영배
Original Assignee
일신테크(주)
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Priority to KR1020100022108A priority Critical patent/KR20110103013A/en
Publication of KR20110103013A publication Critical patent/KR20110103013A/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/255—Splicing of light guides, e.g. by fusion or bonding
    • G02B6/2551—Splicing of light guides, e.g. by fusion or bonding using thermal methods, e.g. fusion welding by arc discharge, laser beam, plasma torch
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/255—Splicing of light guides, e.g. by fusion or bonding
    • G02B6/2553—Splicing machines, e.g. optical fibre fusion splicer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/255—Splicing of light guides, e.g. by fusion or bonding
    • G02B6/2555—Alignment or adjustment devices for aligning prior to splicing
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/255—Splicing of light guides, e.g. by fusion or bonding
    • G02B6/2558—Reinforcement of splice joint

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

The present invention relates to an optical fiber fusion splicing apparatus and an optical fiber fusion splicing method for melting and connecting optical fibers with heat generated by arc discharge. Specifically, the optical fiber fusion splicing quality is improved by controlling the positional change of the discharge center using magnetic force. The present invention relates to an optical fiber fusion splicing apparatus and an optical fiber fusion splicing method with improved discharge stabilization.
The present invention relates to an optical fiber connecting device that melts and connects optical fibers with discharges generated by supplying a discharge current to the discharge electrodes, comprising a discharge position adjusting device for controlling a position of discharges generated between the discharge electrodes by using a magnetic field. The discharge position adjusting device is characterized in that the magnetic field (magnetic field) is formed around the discharge generated between the discharge electrodes, and the position of the discharge is controlled by adjusting the size of the magnetic field to be formed.

Description

Optical fiber fusion splicer with improved discharge stabilization and optical fiber fusion splicing method {METHOD AND APPARATUS FOR FUSION SPLICING OPTICAL FIBERS}

The present invention relates to an optical fiber fusion splicing apparatus and an optical fiber fusion splicing method for melting and connecting optical fibers with heat generated by arc discharge. Specifically, the optical fiber fusion splicing quality is improved by controlling the positional change of the discharge center using magnetic force. The present invention relates to an optical fiber fusion splicing apparatus and an optical fiber fusion splicing method with improved discharge stabilization.

In general, a portable optical fiber (optical fiber) fusion splicing apparatus for connecting optical fibers is provided with a handle for easy mobility. The end portion of the optical fiber is heated (melted) by arc discharge at the connecting portion so as to include a reinforcing processing portion for reinforcing by using a sleeve tube, a monitor for monitoring the inside of the connecting portion, and an operation portion for operating the connecting portion and the reinforcing processing portion. And the connection part is reinforced with a sleeve pipe (refer patent document 1).

In the prior art, a technique is provided to maintain a constant discharge force that depends on the atmospheric pressure change of the connecting portion (see Patent Document 2, Patent Document 3, and Patent Document 4).

In Patent Literature 2 and Patent Literature 3, since the discharge force, which is the heat source of the connection, depends on the change in atmospheric pressure (the discharge power becomes smaller as the atmospheric pressure decreases at a constant discharge current), the change in atmospheric pressure is detected to solve this phenomenon. In order to correct the discharge force according to the detected change, it is shown to change the discharge current so that a constant discharge force is generated.

Patent Document 4 discloses a fusion splicing apparatus and a fusion method of an optical fiber which automatically adjust the discharge current flowing between the discharge electrodes in accordance with the number of cores of the optical fiber, and adjust the discharge current with respect to the change in atmospheric pressure.

As described above, the conventional techniques solve the influence of the connection quality of the optical fiber according to the arc state. The conventional techniques are to change the change of discharge force (arc size) according to the influence of temperature and atmospheric pressure. The discharge current was adjusted (controlled) to stabilize the discharge force (arc size) to improve the connection quality of the optical fiber.

However, the discharge electrode that causes the discharge of the optical fiber generated by the phenomenon such as uneven wear caused by long-term use, surface corrosion of the discharge electrode by the gas generated during the fusion splicing, and the change of position of the fine discharge electrode (rod) There is a disadvantage that the degradation of the connection quality cannot be solved.

That is, the discharge electrode causing the discharge is located at the center of the discharge due to uneven wear caused by long-term use, surface corrosion of the discharge electrode by the gas generated during fusion splicing, and a change in the position of the fine discharge electrode (rod). However, there is a disadvantage in that the quality of the fusion splice decreases due to this, but the technique proposed in the related art does not show a technique for correcting the position change of the discharge center caused by the above phenomenon. There is a disadvantage that can not solve the degradation of the connection quality of the optical fiber according to the change.

Patent Document 1. Domestic Patent Publication No. 10-2009-0078317. Patent Document 2: Japanese Patent Laid-Open No. 63-106706. Patent Document 3. US Patent No. 5,122,638. Patent Document 4. Domestic Patent No. 10-646124.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems,

The phenomenon that the position of the discharge center moves (changes) due to wear due to long-term use of the discharge electrode and surface corrosion caused by the gas generated during discharge, and the connection quality of the optical fiber generated by the movement of the position of the discharge center The purpose is to solve the degradation of.

That is, the optical fiber fusion splicing apparatus and the optical fiber fusion splicing method including a discharge position adjusting device that can control the position change of the discharge center caused by the wear caused by long-term use of the discharge electrode and the surface corrosion caused by the gas generated during discharge, etc. The purpose is to provide.

The present invention is invented to achieve the above object,

An optical fiber connecting apparatus for melting and connecting an optical fiber by discharge generated by supplying a discharge current to the discharge electrode, characterized in that it comprises a discharge position adjusting device for controlling the position of the discharge generated between the discharge electrodes by using a magnetic field. .

The discharge position adjusting device is characterized by forming a magnetic field (magnetic field) around the discharge generated between the discharge electrodes, by adjusting the size of the magnetic field to form the position of the discharge.

The discharge position adjusting device forms an magnetic field, and uses an electromagnet that can easily adjust the size of the magnetic field, and two or more electromagnets are installed in the form of radiation centering on the discharge electrode.

In addition, as a means for achieving the object of the present invention,

In the optical fiber connection method for melting and connecting optical fibers by the discharge generated by supplying a discharge current to the discharge electrode, the position of the discharge generated between the discharge electrode is analyzed, and the discharge position by adjusting the magnetic field according to the analyzed position of the discharge It characterized in that it comprises adjusting the discharge position to be located in the center.

The present invention made as described above, it is possible to secure the reliability of the optical fiber connection by preventing the degradation of the optical fiber connection quality due to the change in the position of the discharge (arc) center due to the long use of the optical fiber fusion splicing apparatus.

That is, the position movement of the center of the discharge (arc) caused by various factors such as wear of the discharge electrode or surface corrosion and deformation due to long use of the optical fiber fusion splicing device is moved to the discharge position control device using the magnetic field. The degradation of connection quality can be prevented.

As described above, the problem caused by the deformation of the discharge electrode can be solved, thereby reducing the maintenance cost due to frequent replacement of the discharge electrode.

1 is a schematic diagram showing the position of the discharge center generated by the deformation of the discharge electrode.
Figure 2 is a schematic diagram for adjusting the position of the discharge center generated by the deformation of the discharge electrode showing an embodiment of the present invention.
Figure 3 is a schematic diagram of a discharge position adjusting device for adjusting the position of the discharge center generated by the deformation of the discharge electrode showing an embodiment of the present invention.
Figure 4 is a schematic diagram of modifying the position of the discharge (arc) using the discharge position adjusting device showing an embodiment of the present invention.
Figure 5 is a step of the fusion splicer is installed discharge position adjusting apparatus of an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

In general, an optical fiber fusion splicing apparatus for connecting optical fibers includes a fusion splicing portion for connecting an end portion of the optical fiber by arc discharge, a reinforcing processing portion for reinforcing a connecting portion of the optical fiber connected at the fusion splicing portion using a sleeve tube, and A monitor capable of monitoring the interior of the fusion splicing portion, and a control portion (operating portion) for manipulating the splicing portion and the reinforcement processing portion, and the end portion of the optical fiber is heated (melted) by arc discharge at the splicing portion and connected to the sleeve tube. Reinforcing treatment (see Patent Document 1: Korean Unexamined Patent Publication No. 10-2009-0078317).

The optical fiber fusion splicing apparatus may further include a stripper to strip the coating of the optical fiber, a cutter and a washing machine to cut the end portion.

(Arc) discharge is generated between the discharge electrodes 10a and 10b by the power supplied by the discharge electrodes 10a and 10b and a cradle (clamp) for fixing the camera 20 to the optical fiber. The ends of the optical fiber 1 are melted and fused by heat generated by (arc) discharge.

When the optical fiber fusion splicing apparatus is to be used for a long time as shown in FIG. 1, the discharge electrodes 10a and 10b may be subjected to (a) wear or the surface may be corroded by gas generated during the fusion splicing. The center of the (arc) discharge, which should be located at, moves from C to C ', resulting in a poor connection quality of the optical fiber, resulting in poor reliability.

As shown in FIG. 2, the connection quality of the optical fiber caused by the movement of the center of the (arc) discharge generated by the deformation (wear and corrosion) of the discharge electrodes 10a and 10b is reduced as described above. The deterioration of the connection quality caused by the movement of the center of the (arc) discharge is corrected by correcting the center of the (arc) discharge moved to the discharge position adjusting device 30 using the electromagnet to be formed.

In general, the (arc) discharge generated during the fusion splicing of optical fibers is affected by the magnetic field (magnetic force), and has a property of bending when a strong magnetic field (magnetic force) occurs around the (arc) discharge. The present invention utilizes these characteristics to change the magnetic field around the (arc) discharge so as to move (control) the center of the (arc) discharge.

This will be described in more detail with reference to FIG. 3.

A discharge position adjusting device 30 made of an electromagnet for forming a magnetic field (magnetic field) is provided at the fusion splicing portion provided with the discharge electrode 10 and the camera 20 for photographing the optical fiber 1.

The discharge position adjusting device 30 is composed of a plurality of electromagnets (30a, 30b, 30c, 30d), the plurality of electromagnets (30a, 30b, 30c, 30d) in the form of radiation around the discharge electrode 10 It is installed in a symmetrical position.

Discharge position adjusting device 30 composed of a plurality of electromagnets (30a, 30b, 30c, 30d) installed in this way is electrically connected to the controller 40 is controlled by the controller (40).

That is, the controller 40 confirms (determines) the position of the (arc) discharge by the data transmitted from the plurality of cameras 20a and 20b, and moves the center of the identified (arc) discharge ((ark) In the case where the optical fiber 1 is not located at the center of the discharge, a magnetic field is formed by using the discharge position adjusting device 30 composed of a plurality of electromagnets 30a, 30b, 30c, and 30d. The optical fiber 1 is positioned at the center of the (arc) discharge.

As described above, the controller 40 checks (decides) the position of the (arc) discharge by the data transmitted from the plurality of cameras 20a and 20b, and adjusts the position of the (arc) discharge with the discharge position adjusting device 30. However, the operator may monitor the transmission from the plurality of cameras 20a and 20b to manually position the optical fiber 1 at the center of the (arc) discharge.

FIG. 4 shows an example in which the position of the (arc) discharge is adjusted using the discharge position adjusting device 30 when the multi-core optical fiber 1 is not located at the center of the discharge electrode 10 but is located at the lower side of the drawing. .

As shown in FIG. 4, when the multi-core optical fiber 1 is not located at the center of the discharge electrode 10 but located at the lower side of the drawing, a strong current is applied to the discharge position adjusting device 30 made of an electromagnet positioned at the lower side of the drawing. The shape of the (arc) discharge (a) is widened to the lower end (by changing the position of the (arc) discharge) so as to form a strong magnetic field having a polarity opposite to that of the (arc) discharge (a). The temperature is kept constant to improve the quality of the optical fiber fusion splicing.

Discharge position adjusting device 30 made of the electromagnet uses the property of forming and pushing the magnetic field of the same polarity as the polarity of the (arc) discharge, or by using the property of attracting by forming the magnetic field of the opposite polarity, or two The properties can be used in combination.

Discharge position adjusting device 30 made of the electromagnet changes the polarity of the magnetic field according to the type of current supplied.

The optical fiber fusion splicing apparatus in which the discharge position adjusting device is installed as described above is fusion spliced in the optical fiber in the same step as in FIG. 5.

An optical fiber mounting step (S10) installed at the fusion splicing unit of the optical fiber fusion splicing apparatus and installing and fixing the optical fiber to be connected to the optical fiber holder (clamp);

A discharge start step (S20) of starting discharge by supplying (applying) power to the discharge electrode 10 after the step (S10);

A camera monitoring step (S30) of photographing and monitoring the (arc) discharge with the camera 20 installed in the fusion splicing part after the step (S20);

A discharge position analysis step (S40) of analyzing the position of the (arc) discharge by the controller or the operator with the image photographed by the camera 20 in the step S30;

If the optical fiber 1 is not located at the center of the (arc) discharge in step S40 (No), the periphery of the (arc) discharge is discharged to the discharge position adjusting device 30 according to the analyzed position of the (arc) discharge. A magnetic field adjustment step (S50) of each position of the discharge position adjusting device 30 which adjusts (moves) the position of the (arc) discharge by changing the magnetic field of the arc;

When the position of the (arc) discharge adjusted by the discharge position adjusting device 30 is adjusted (moved) in step S50, the camera monitoring step S30 and the discharge position analyzing step S40 are performed again.

A discharge termination step (S60) of terminating the discharge by cutting off the power supplied to the discharge electrode 10 when the optical fiber 1 is located at the (arc) discharge center part in the step (S40);

After the step (S60) is separated from the fusion-connected optical fiber that is fixed to the optical fiber holder is made of the optical fiber connection completion step (S70) of reinforcing the reinforcement sleeve.

1: optical fiber 10, 10a, 10b: discharge electrode
20, 20a, 20b: camera 30: discharge position control device
30a, 30b, 30c, 30d: electromagnet
40: controller
a: (arc) discharge b: magnetic field
c, c ': center of discharge

Claims (5)

In the optical fiber connecting device for melting and connecting the optical fiber by the discharge generated by supplying a discharge current to the discharge electrode,
An optical fiber fusion splicing apparatus having improved discharge stabilization, comprising a discharge position adjusting device for controlling a position of discharge generated between discharge electrodes by using a magnetic field. The method of claim 1,
The discharging position control device is to form a magnetic field (magnetic field) around the discharge generated between the discharge electrode, the optical fiber fusion splicing apparatus to improve the discharge stabilization characterized in that to adjust the position of the discharge by adjusting the size of the magnetic field formed . The method of claim 1,
The discharge position adjusting device is an optical fiber fusion splicing apparatus to improve the discharge stabilization, characterized in that using the electromagnet. The method of claim 3,
And two or more electromagnets are installed in a radiation form centering on the discharge electrode. In the optical fiber connection method for melting and connecting the optical fiber by the discharge generated by supplying a discharge current to the discharge electrode,
Analyzing the position of the discharge occurring between the discharge electrodes, and adjusting the discharge position so that the discharge position is located at the center by adjusting the magnetic field according to the analyzed discharge position. Fusion splicing method.
KR1020100022108A 2010-03-12 2010-03-12 Method and apparatus for fusion splicing optical fibers KR20110103013A (en)

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KR1020100022108A KR20110103013A (en) 2010-03-12 2010-03-12 Method and apparatus for fusion splicing optical fibers

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Application Number Priority Date Filing Date Title
KR1020100022108A KR20110103013A (en) 2010-03-12 2010-03-12 Method and apparatus for fusion splicing optical fibers

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KR20110103013A true KR20110103013A (en) 2011-09-20

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020071419A (en) * 2018-11-01 2020-05-07 住友電気工業株式会社 Optical fiber fusion connection method and fusion connection device
JP2021152611A (en) * 2020-03-24 2021-09-30 古河電気工業株式会社 Welder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020071419A (en) * 2018-11-01 2020-05-07 住友電気工業株式会社 Optical fiber fusion connection method and fusion connection device
JP2021152611A (en) * 2020-03-24 2021-09-30 古河電気工業株式会社 Welder

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