KR101765178B1

KR101765178B1 - Plug Filter

Info

Publication number: KR101765178B1
Application number: KR1020160010782A
Authority: KR
Inventors: 최영복
Original assignee: (주)파이버피아
Priority date: 2016-01-28
Filing date: 2016-01-28
Publication date: 2017-08-04

Abstract

A plug filter according to the present invention includes a body having a rectangular parallelepiped shape having a front portion of a bottom surface higher than a rear portion of the body, a connector housing fastened and fixed to the front of the body, a lid portion covering the upper portion of the body, A pair of first and second supporting rods, a pair of jaws on the front side of the bottom of the body, and a ferrule portion which is housed in the connector housing and is coupled to the first and second supporting rods; An input line connected to the first slit part, and an output line connected to the second slit part of the adapter part.

Description

Plug Filter {Plug Filter}

The present invention relates to a plug filter, and more particularly to a small plug filter connecting an add / drop pigtail cord.

Currently, OTDR (Optical Time Domain Reflectometer) is used as a monitoring device for operation and maintenance of the optical line to the optical network.

In this method, the monitoring light is inserted through the add / drop filter at a specific portion of the optical path, and the reflected light received by the Rayleigh scattering and Fresnel reflection is measured at the base station to determine whether it is operating normally, And is used to obtain a lot of information such as bending and aging of the optical line.

In addition, according to ITU-T Recommendations, it is recommended to use the wavelength of the supervisory wavelength band for optical line supervision, in order to monitor in real time the optical core being operated without interfering with the communication wavelength of the optical core being operated.

As shown in Fig. 1, the add / drop filter is a filter that inputs signal light to one side of a filter 2 built in a casing 4 having a width, a length and a height of 12 cm, 8 cm and 1.5 cm, An add / drop jumper code 6 for bypassing an add / drop wavelength is connected to the other input line 5 and an output line 3 for outputting a signal light are connected to the input line 5, The output line 3 and the optical connector 8 provided at the tip of the add / drop jumper cord 6 are exposed to the outside.

However, the conventional add / drop filter has a problem that the occupation area occupied by the filter case is so wide that it can not be efficiently operated and that the cost of constructing the optical path monitoring system is increased.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems described above and to provide a compact plug filter which dramatically reduces an occupied area occupied by a filter case to reduce the construction cost of a surveillance system and improve operability due to optical line monitoring.

In order to solve the problem of the present invention, a plug filter of a preferred embodiment has a rectangular parallelepiped shape having a wider cross section than a longitudinal section, A connector housing fastened and fixed to the front side of the body; A lid covering the upper portion of the body; A first space part and a second space part formed inside the body from a front side of the one connector housing being fastened to a lower side of the body; First and second supports dividing the first space part and the second space part, coupled to one side of the interior of the space part body and having a height lower than the height of the body part; A ferrule portion housed in the connector housing and coupled to the jaw at the front of the bottom of the body, the first sleeve including a first sleeve and a first protrusion; One adapter portion accommodated in the grooves of the first and second support rods and including a second slit portion and a second protrusion portion; An input line connected to the first sleeves of the peristaltic part; And an output line connected to the second sleeve of the adapter unit and formed in the direction of the one connector housing; The output line formed in the one connector housing direction makes a U-turn in the first space portion so as to move downward along with the input line through the space formed by the height of the body and the height of the first and second supports, Lt; / RTI > And the first projecting portion and the second projecting portion are arranged in series on a predetermined axis in a downward direction from the front side.
In one embodiment, the lid includes a protrusion, and the protrusion is fastened to the fastening groove of the body.
In one embodiment, the input line and the output line are enclosed by a protective jacket and are exposed to the outside of the body.
In one embodiment, the one connector housing is fixed to a bottom portion of the body through a coupling groove formed from the top to the bottom.

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As described above, by using the small plug filter of the present invention, it is possible to reduce the construction cost of the optical line monitoring system and drastically reduce the occupied area occupied by the filter case, thereby improving the operability of the optical line monitoring have.

1 is a conventional cross-sectional view of an add / drop filter.
2 is a perspective view of a plug filter according to an embodiment of the present invention.
3 is a sectional view of a plug filter according to an embodiment of the present invention.
4 is a top cross-sectional view of a plug filter according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

FIG. 2 is a perspective view of a plug filter according to an embodiment of the present invention, FIG. 3 is a sectional view of a plug filter according to an embodiment of the present invention, and FIG. 4 is a top view of a plug filter according to another embodiment of the present invention .

2 to 4, the plug filter of the present invention includes a body 10, a connector housing 20 coupled to the front of the body 10 to be plugged in, And a covering lid 30.

The body 10 is formed in a rectangular parallelepiped shape having a transverse shape wider than the longitudinal direction so as to reduce the bending loss of the optical fiber and to eliminate the need for a separate installation space in the transmission room equipment.

A first space portion 17 and a second space portion 18 are formed in the body 10 from a front side to a downside side where one connector housing is fastened. The first and second supports 11 and 12 having grooves may be coupled to one side of the body 10 at regular intervals. The first and second support rods 11 and 12 separate the first and second space portions 17 and 18 and the height of the first and second support rods 11 and 12 is lower than that of the body. do.

Here, one adapter unit 50 including a second sleeve (not shown) and a second protrusion 51 is installed in the first and second support bases 11 and 12 having grooves. At this time, since the adapter unit 50 is mounted on the grooves of the first and second support rods 11 and 12, the adapter unit 50 is fixed without moving back and forth.

A jaw 13 is formed at a front portion of the bottom of the body 10 and a ferrule 40 having a first sleeve (not shown) and a first protrusion 41 inside the connector housing 20 And is stored. Here, the connector housing 20 is fixed to the front side of the bottom of the body 10 through a fastening groove formed from the upper side to the lower side.

The lid 30 is formed with four protrusions 31, but is not limited thereto. Here, the projecting portion 31 of the lid 30 is fastened and fixed to the fastening groove 14 of the body 10. Thus, the adapter unit 50 and the ferrule unit 40 are fixed by fastening the lid unit 30 to the body 10.

An optical fiber as an input line Ref 15 is connected to one side of the first sleeve included in the ferrule portion 40 and an optical fiber 16 as an output line Com 16 is connected to one side of the second sleeve embedded in the adapter portion 50. Respectively. The output line 16 makes a U-turn in the first space 17 and is connected to the rear of the body together with the input line 15 by the difference between the height of the body and the height of the first and second supports And the first projecting portion 41 and the second projecting portion 42 can be arranged in series on a predetermined axis (x-axis) in the downward direction from the front side .

The input line 15 and the output line 16 may be connected to a filter (not shown) and wrapped with a protective jacket 17 so as to be disposed in an empty space inside the body 10.

An add / drop pigtail cord is connected to the end of the filter connected to the input line 15 and the output line 16 wrapped by the protective jacket 17.

Here, the ferro unit 40 is connected to an optical line terminal (OLT) as a provider-side terminal, and the adapter unit 50 is connected to an optical network terminal (ONT) And the add / drop pigtail cord is connected to the OTDR.

Here, the OTDR selectively receives a supervisory light through an add / drop pigtail code and receives reflected supervisory light to an optical path connecting the supplier side terminal and the consumer side terminal.

That is, the supervisory light incident on the user's selective wavelength, for example, the wavelength of the supervisory band through the additive tail code is transmitted to the output line 16 by the filter, and the bending, The Rayleigh scattering and the Fresnel reflected supervisory light are transmitted to the drop pigtail code by the filter due to the occurrence of a fault such as a disconnection or the like, and the remaining wavelengths are reflected by the filter to the input line 15.

Conventionally, a filter case having a width of 12 cm, a length of 8 cm, and a height of 1.5 cm has been used, which is inconvenient because a separate installation space must be provided for the OLT rack. However, cm and a small plug filter of 5.68 cm is used, the ONT side jumper cord connected to the OLT output terminal is removed from the OLT output terminal without any additional installation space, and after the plug filter of the present invention is inserted, Insertion into the adapter part of the invention simply terminates the installation.

By utilizing the plug filter of the present invention, it is possible to reduce the construction cost of the optical line monitoring system, drastically reduce the occupied area occupied by the filter case, and improve operability due to the optical line monitoring.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. will be. The scope of the present invention is defined by the appended claims, and all differences within the scope of the claims are to be construed as being included in the present invention.

10: body 11: first support
12: second support 13: jaw
14: fastening groove 15: input line
16: output line 17: protective jacket
20: connector housing 30: cover
40: ferrule part 50: adapter part

Claims

A rectangular parallelepiped shape having a wider horizontal shape than a vertical shape, a rectangular parallelepiped shaped body having a lower front part and a lower rear part;
A connector housing fastened and fixed to the front side of the body;
A lid covering the upper portion of the body;
A first space part and a second space part formed inside the body from a front side of the one connector housing being fastened to a lower side of the body;
First and second supports dividing the first space part and the second space part, coupled to one side of the interior of the space part body and having a height lower than the height of the body part;
A ferrule portion housed in the connector housing and coupled to the jaw at the front of the bottom of the body, the first sleeve including a first sleeve and a first protrusion;
One adapter portion accommodated in the grooves of the first and second support rods and including a second slit portion and a second protrusion portion;
An input line connected to the first sleeves of the peristaltic part; And
An output line connected to the second sleeve portion of the adapter portion and formed in the direction of the one connector housing;
The output line formed in the one connector housing direction makes a U-turn in the first space portion so as to move downward along with the input line through the space formed by the height of the body and the height of the first and second supports, Lt; / RTI >
Wherein the first projecting portion and the second projecting portion are arranged in series on a predetermined axis in a downward direction from the front side.

The method according to claim 1,
Wherein the lid portion includes a protrusion, and the protrusion is fastened to the coupling groove of the body.

The method according to claim 1,
Wherein the input line and the output line are connected to a filter and are wrapped with a protective jacket.

The method according to claim 1,
Wherein the one connector housing is fixed through a coupling groove formed from an upper portion to a lower portion on a bottom surface pressing portion of the body.

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