KR101691888B1 - optic adapter for non-contact optic connector - Google Patents

optic adapter for non-contact optic connector Download PDF

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Publication number
KR101691888B1
KR101691888B1 KR1020160019119A KR20160019119A KR101691888B1 KR 101691888 B1 KR101691888 B1 KR 101691888B1 KR 1020160019119 A KR1020160019119 A KR 1020160019119A KR 20160019119 A KR20160019119 A KR 20160019119A KR 101691888 B1 KR101691888 B1 KR 101691888B1
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KR
South Korea
Prior art keywords
ferrule
optical
lens
optical fiber
opening
Prior art date
Application number
KR1020160019119A
Other languages
Korean (ko)
Inventor
윤경진
선경호
이창훈
Original Assignee
주식회사 토르그룹
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Application filed by 주식회사 토르그룹 filed Critical 주식회사 토르그룹
Priority to KR1020160019119A priority Critical patent/KR101691888B1/en
Application granted granted Critical
Publication of KR101691888B1 publication Critical patent/KR101691888B1/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
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3847—Details of mounting fibres in ferrules; Assembly methods; Manufacture with means preventing fibre end damage, e.g. recessed fibre surfaces
    • G02B6/3849—Details of mounting fibres in ferrules; Assembly methods; Manufacture with means preventing fibre end damage, e.g. recessed fibre surfaces using mechanical protective elements, e.g. caps, hoods, sealing membranes
    • 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
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3834—Means for centering or aligning the light guide within the ferrule
    • G02B6/3843—Means for centering or aligning the light guide within the ferrule with auxiliary facilities for movably aligning or adjusting the fibre within its ferrule, e.g. measuring position or eccentricity
    • 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
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/385—Accessories for testing or observation of connectors
    • 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
    • G02B6/36—Mechanical coupling means
    • G02B6/38—Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807—Dismountable connectors, i.e. comprising plugs
    • G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3853—Lens inside the ferrule

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

The present invention relates to an optical adapter for immersion detection of a noncontact optical connector for connecting between optical fibers, which comprises a first lens and a first optical fiber on one side and a second lens and a second optical fiber on the other side, And a second lens disposed in the space between the first lens and the second lens, wherein the optical connector includes an opening that is opened in the longitudinal direction, And a second ferrule having the second lens and the second optical fiber disposed inside the first ferrule is spaced apart from the first ferrule by the distance between the first ferrule and the second ferrule, A concave portion formed at a predetermined depth at a position corresponding to the spaced apart space below the ferrule coupling portion; It is characterized in the invention having a circular sphere provided.

Description

[0001] The present invention relates to an optical adapter for a non-contact optical connector,

The present invention relates to an optical adapter for immersion detection of a noncontact optical connector for connecting optical fibers.

Generally, an optical fiber (or an optical cable) transmits an optical signal. Unlike a wire that transmits an electric signal, an optical fiber (or an optical cable) can transmit a large amount of information without loss at an extremely high speed.

Since the optical fiber can not be manufactured in an indefinite length by the manufacturer, it is usually manufactured to a length of about 2 Km and wound on the drum. Therefore, in order to install the optical fiber to a long distance, it should be connected in the middle.

An enclosure is used at the connection point to connect the optical fiber in the middle or to branch the optical fiber. Inside the enclosure, an optical connector is used to connect the optical fiber.

An optical connector is an element for connecting an optical fiber and an optical fiber in an optical path. In the prior art, a contact type optical connector in which an optical fiber is aligned and closely fixed to a central through hole of a ferrule made of ceramic or glass, Respectively.

However, the contact type optical connector may cause fine dust or dirt on the physical contact surface between the optical fiber and the optical fiber, which may damage the surface of the contact surface, and may interfere with the contact between the optical fibers. In addition, the contact type optical connector requires a precision polishing technique and an ultra-precision alignment technique for optical fibers. For this reason, when the installation environment is changed like outdoor, it is difficult to use.

To overcome the disadvantages of the above-mentioned contact type optical connector, there has been developed a noncontact optical connector for diffusing light using a lens mounted inside a ferrule and transmitting an optical signal through a plurality of optical channels formed by the diffused light .

Non-contact type optical connectors ensure high reliability even in poor communication environments such as defense fields and outdoor construction. Such a non-contact type optical connector is disclosed in Korean Patent No. 10-1137229 (the name of the invention: non-contact type optical fiber connector). Since an optical signal is transmitted through an expanded-size parallel beam, . As a result, it is easy to repeatedly connect, and there is an advantage that high reliability is ensured even in the case of surface damage due to fine dust or dirt.

On the other hand, once the optical line facility fails, it not only affects a huge amount of money but also takes a long time to recover from a failure. Accordingly, domestic and overseas telecom operators are regularly performing maintenance work on the track in order to prevent the failure due to the light ray accident to the utmost.

In particular, optical fibers are vulnerable to water, which can lead to serious accidents where water penetration shortens the life of the optical fiber and even disrupts optical communication.

In general, fiber flooding occurs mainly in the enclosure where the connection point exists, and the enclosure with possibility of flooding has to be opened and visually confirmed. However, due to the nature of the optical fiber, it is not easy to find flooding, and repair work due to inundation is also long.

In the prior art, a flood detection sensor using a change in connection loss by micro vending has been used for immersion detection. The increase in optical loss due to micro-bending of the optical fiber is detected by an optical time domain reflectometry And detected immersion. The restoration was completed by replacing the flooded enclosure.

In addition, there is a method for confirming flooding by providing a communication device for communication with various electric sensors inside the enclosure for immersion detection, such as Korean Patent Laid-Open No. 10-2010-0087562 (entitled " Was used.

In the meantime, the immersion detection has to be carried out not only for an active fiber used for communication but also for an optical fiber (dark fiber) not used for communication. Therefore, in order to detect submersion of an unused optical fiber (dark fiber) And devices. Accordingly, there is a problem that a large amount of maintenance cost is required, and electric power for driving various electric sensors and devices is also unnecessarily consumed.

It is an object of the present invention to provide an optical adapter for a non-contact type optical connector which does not require an electric sensor or a communication device for detecting flooding in a housing and enables immersion management without power consumption .

It is another object of the present invention to provide an optical adapter for a noncontact optical connector that solves the problem of immersion detection of unused optical fiber with a mechanical structure requiring a minimum maintenance cost.

According to an aspect of the present invention, there is provided an optical adapter for a noncontact optical connector, including a first lens and a first optical fiber on one side and a second lens and a second optical fiber on the other side, And a second lens disposed in a space between the first lens and the second lens, the optical signal being transmitted through a plurality of optical channels formed in a space between the first lens and the second lens, the optical adapter comprising: And a second ferrule having the second lens and the second optical fiber disposed inside the first ferrule is spaced apart from the first ferrule by the distance between the first ferrule and the second ferrule, A concave portion formed at a predetermined depth at a position corresponding to the spaced apart space below the ferrule coupling portion; It is provided with a round sphere that is provided.

Preferably, the wing portion is formed to extend outwardly from the opening portion so that the first ferrule or the second ferrule can be inserted into the lower portion from the upper portion to the lower portion, .

Preferably, the ferrule coupling portion includes a first lens provided in the first ferrule and a second lens provided in the second ferrule, and the first lens and the second ferrule are arranged in the longitudinal direction, .

Preferably, when the concave portion and the spacing space are flooded, the round hole floats to the spacing space to block a plurality of optical channels formed in the spacing space.

Preferably, the optical adapter for the non-contact optical connector may be for immersion detection of a dark fiber which is not used for communication on the optical path.

According to the present invention, it is possible to more precisely detect whether a float is flooded in a device such as optical time domain reflectometry (OTDR), which measures optical loss characteristics and reflection characteristics by blocking optical channels, I can do it. Particularly, in the present invention, flooding control can be performed without electric power consumption because it can detect the flooding by mechanical structure without an electric sensor or a device.

In addition, by applying the mechanical structure to the housing, it is possible to detect the immersion, so that it is possible to eliminate the burden of mounting the electrical sensor or communication device to the optical fiber (dark fiber) as well as the active fiber used for communication have. Thereby, the maintenance cost for the optical line applying the non-contact type optical connector is minimized.

FIG. 1 is a diagram illustrating a light path connection structure using a general non-contact type optical connector,
2 to 3 are perspective views showing the structure of an optical adapter for a non-contact type optical connector according to the present invention,
FIGS. 4 to 5 are diagrams illustrating an example of fitting an optical adapter for a non-contact type optical connector according to the present invention,
6 to 7 are diagrams showing an example of the action of a circular sphere provided in an optical adapter for a non-contact type optical connector according to the present invention.

Other objects, features and advantages of the present invention will become apparent from the detailed description of the embodiments with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a configuration and an operation of an embodiment of the present invention will be described with reference to the accompanying drawings, and the configuration and operation of the present invention shown in and described by the drawings will be described as at least one embodiment, The technical idea of the present invention and its essential structure and action are not limited.

Hereinafter, preferred embodiments of an optical adapter for a non-contact type optical connector according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram showing a light path connection structure using a general non-contact type optical connector.

Referring to FIG. 1, the non-contact type optical connector includes a first ferrule 24 disposed on one side and a second ferrule 25 disposed on the other side. The first ferrule 24, And the second ferrule 25 is opposed to the second ferrule 25.

The first ferrule 24 is provided with a first lens 22 and a first optical fiber 20 on its inner side and a second ferrule 25 is provided with a second lens 23 and a second lens 25 on its inner side. A second optical fiber 21 is provided. The first lens 22 and the second lens 23 are spaced apart from each other by a predetermined distance, and a plurality of optical channels for transmitting optical signals are formed in the spacing d formed thereby.

The optical signal emitted from the core of the first optical fiber 20 fixed to the first ferrule 24 is also diffused through the first lens 22 fixed to the first ferrule 24 and diffused The beam is incident on the second optical fiber 21 fixed to the second ferrule 25 through the second lens 23 fixed to the second ferrule 25 through the spacing space and transmitted.

As shown in FIG. 1, the optical adapter of the present invention is for a non-contact type optical connector in which optical signals are transmitted through a plurality of optical channels formed in a spaced-apart space between a first lens and a second lens.

2 to 3 are perspective views showing the structure of an optical adapter for a non-contact type optical connector according to the present invention.

2 and 3, the optical adapter 100 includes an opening 110, a ferrule coupling portion 120, a concave portion 130, and a circular aperture 140.

The opening 110 is opened in the longitudinal direction and can be opened to the upper portion of the optical adapter 100.

The ferrule coupling portion 120 fixes the first ferrule 24 and the second ferrule 25 of the optical connector. The first ferrule 24 and the second ferrule 25 of the optical connector are inserted through the opening 110 and fixed to the ferrule coupling portion 120. For this, the opening 110 is smaller than the diameter of the first ferrule 24 and the second ferrule 25 but extends so that the first ferrule 24 and the second ferrule 25 can be inserted, And the second ferrule 25 and the second ferrule 25 are fixed to the ferrule coupling portion 120.

The first ferrule 24 and the second ferrule 25 of the optical connector are fitted into the ferrule coupling portion 120 through the opening 110. The first ferrule 24 is inserted through one side of the opening 110, And the second ferrule 25 is inserted through the other side of the opening 110 and fixed to the other side of the ferrule coupling part 120. [

In particular, the second ferrule 25 is inserted and fixed through the other side of the opening 110 so as to be spaced apart from the first ferrule 24 by a predetermined distance.

The first lens 22 fixed to the first ferrule 24 and the second lens 23 fixed to the second ferrule 25 are opposed to each other in the ferrule coupling part 120, And the second ferrule 25 are aligned and aligned in the longitudinal direction.

The optical adapter 100 is constructed such that the first ferrule 24 and the second ferrule 25 are inserted into the lower portion through the opening 110 and the first ferrule 24 and the second ferrule 25 And further includes a wing portion 150 so as to be easily fitted through the opening portion 110.

The wing portion 150 is formed to extend outward from the opening portion 110 and the wing portion 150 is formed to expand outward from the opening portion 110.

4 to 5 are diagrams illustrating an example of fitting an optical adapter for a non-contact type optical connector according to the present invention. As shown in FIG. 4, when the first ferrule 24 or the second ferrule 25 is inserted into the opening 110 The first ferrule 24 and the second ferrule 25 are aligned and fixed in the longitudinal direction as shown in FIG.

Accordingly, the first ferrule 24 and the second ferrule 25 are easily inserted through the wing portion 150 and are pressed onto the ferrule coupling portion 120. As the ferrule coupling part 120 grasps the first ferrule 24 and the second ferrule 25 at a distance from each other, the first ferrule 24 and the second ferrule 25 form a large number of optical channels A spacing space is formed.

The concave portion 130 is formed at a predetermined depth at a position corresponding to the spacing d of the lower portion of the ferrule coupling portion 120.

The circular hole 140 is provided inside the concave portion 130 formed in the spacing space d. The circular opening 140 floats in the spacing d during flooding. The present invention is not limited to the circular aperture 140 provided in the concave portion 130 of the optical adapter 100 of the present invention and can be applied in any form that can be floated when the float 130 is flooded Do.

6 to 7 are diagrams showing an example of the action of a circular sphere provided in an optical adapter for a non-contact type optical connector according to the present invention.

6 shows a state in which the circular opening 140 has no effect on the plurality of optical channels formed in the spacing space d inside the concave portion 130 and FIG. 130) and the spacing space (d) flooded and floated to the spacing space (d).

As shown in FIG. 7, the circular hole 140 floats into the spacing space d by flooding to block a plurality of optical channels formed in the spacing d.

The optical adapter 100 according to the present invention can be used for immersion detection of an optical fiber used for communication on a light path as well as an optical fiber (dark fiber) not used for communication. Particularly, it is more effective in detection of immersion in a dark fiber which is not used for communication so as to reduce the burden on the cost of constructing the optical fiber line.

The optical adapter 100 according to the present invention is used to detect the immersion of a connector used in a connection point to connect a corresponding optical connector or an optical fiber in the middle or to branch an optical fiber.

In particular, an optical time domain reflectometry (OTDR) device measures optical loss characteristics and reflection characteristics of a housing on which the optical adapter 100 of the present invention is mounted, thereby more accurately detecting whether the optical adapter 100 is flooded.

For an enclosure having an optical adapter in which the circular opening 140 floats in the spacing d, the OTDR device can measure the optical loss increase. In addition, time and distance information can be calculated by measuring the reflection characteristic of light, and the immersed body can be detected therefrom.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention.

It is therefore to be understood that the embodiments of the invention described herein are to be considered in all respects as illustrative and not restrictive, and the scope of the invention is indicated by the appended claims rather than by the foregoing description, Should be interpreted as being included in.

100: Optical adapter
110: opening
120: ferrule coupling part
130: lumbar
140: Circular Sphere
150: wing portion

Claims (4)

A first lens and a first optical fiber on one side and a second lens and a second optical fiber on the other side of the first lens and a second optical fiber to transmit an optical signal through a plurality of optical channels formed in a space between the first lens and the second lens, An optical adapter for a connector,
An opening longitudinally open;
And a first ferrule having the first lens and the first optical fiber inserted and fixed through one side of the opening, and a second ferrule having the second lens and the second optical fiber inside the first ferrule, A ferrule engaging portion inserted and fixed through the other side of the opening so as to be spaced apart from the ferrule by the spacing space;
A recess formed at a predetermined depth in a position corresponding to the spacing space below the ferrule coupling portion; And
And a circular sphere provided on the inside of the recessed portion. The method according to claim 1,
And a wing portion formed to extend outward from the opening portion,
Wherein the wing portion is formed to extend from the opening toward the outer side so that the first ferrule or the second ferrule is inserted from the upper portion to the lower portion. The method according to claim 1,
The ferrule-
Wherein the first lens provided in the first ferrule and the second lens provided in the second ferrule are inserted and fixed in such a manner that the first ferrule and the second ferrule are aligned in the longitudinal direction to face each other, Optical adapters for connectors. The method according to claim 1,
In the above-
Wherein when the concave portion and the spacing space are flooded, the concave portion and the spacing space float into the spacing space to block a plurality of optical channels formed in the spacing space.
KR1020160019119A 2016-02-18 2016-02-18 optic adapter for non-contact optic connector KR101691888B1 (en)

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KR1020160019119A KR101691888B1 (en) 2016-02-18 2016-02-18 optic adapter for non-contact optic connector

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Application Number Priority Date Filing Date Title
KR1020160019119A KR101691888B1 (en) 2016-02-18 2016-02-18 optic adapter for non-contact optic connector

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106940462A (en) * 2017-04-07 2017-07-11 沈阳兴华航空电器有限责任公司 A kind of extending type fiber optic adapter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100087562A (en) * 2009-01-28 2010-08-05 주식회사 케이티 Submergence sensing device for optical fiber splice closure
KR101512689B1 (en) * 2013-11-29 2015-04-22 엑스빔테크 주식회사 Adapter of beam connecter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100087562A (en) * 2009-01-28 2010-08-05 주식회사 케이티 Submergence sensing device for optical fiber splice closure
KR101512689B1 (en) * 2013-11-29 2015-04-22 엑스빔테크 주식회사 Adapter of beam connecter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106940462A (en) * 2017-04-07 2017-07-11 沈阳兴华航空电器有限责任公司 A kind of extending type fiber optic adapter

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