KR102139386B1 - Optical Fiber Jumper Cord - Google Patents

Abstract

The present invention relates to an optical jumper cord that is less likely to damage an optical fiber and minimizes unnecessary waste even in a complicated indoor structure during indoor installation, and can be immediately applied to a conventional remote node terminal box.

Description

Optical Jumper Cord{Optical Fiber Jumper Cord}

The present invention relates to a light jumper cord. More specifically, the present invention relates to an indoor optical jumper code used in an FTTH optical communication network based on PON technology.

Recently, the work of converting the high-speed Internet from a telephone line-based digital subscriber line (DSL) method to a fiber-based fiber-to-the-home (FTTH) method is accelerating.

In a fiber-to-the-home (FTTH) or fiber-to-the-building (FTTB) communication network, passive optical network (PON) technology provides remote nodes (RNs) for passive branch devices that do not require power supply. It is a point-to-multipoint based optical subscriber network technology.

The PON technology is further divided into two types according to the type of the remote node and the multiple access method associated with it, one of which is a time division multiplexing (TDM) PON technology using an optical-power branching device as a remote node and the other is wavelength branching. It is a wavelength division multiplexing (WDM)-PON technology that uses a device as a remote node.

Currently, 1G-EPON and G-PON, two major technologies of TDM-PON using optical power branching device as a remote node, are solutions that enable Giga-class FTTH deployment. Up to 32 subscribers usually share bandwidth while providing, G-PON provides 2.5Gb/s downward and 1.25Gb/s upward, while up to 64 subscribers can share bandwidth.

Recently, optical communication networks such as FTTH based on PON technology are connected to a remote node terminal box in a building via a network, an optical line terminal (OLT), and an optical distribution hub (FDH). The branched optical jumper code may provide an optical communication network in a manner that is connected to a plurality of user units (ONU) in the building.

When the optical jumper cords are placed from a remote node terminal box installed in a multi-storey building to a plurality of distributed user units (ONUs) in the building, the installation path of the optical jumper cords is not reachable or complicated by workers. It may include an installation path.

In this case, the optical jumper cord connecting the remote node terminal box and the user unit often uses a drop cable (input cable) in which an extension wire and an optical fiber are arranged in an 8-shape, but in the case of a drop cable, the optical fiber of the dual structure is included. Since the diameter of the cable area to be said to have a size of about 3mm, many problems such as bending or breaking of the cable area including the optical fiber in the indoor installation path of more than 100 meters long occurred.

If the installation length is long and the installation path is complicated, such a problem becomes even greater.

In addition, the width of the cable holder of the remote node terminal box for connection of the conventional drop cable is designed to fit the cable diameter of the 8-shaped drop cable, which has been widely used as a conventional incoming cable, and such remote node terminal box or wall mounting in a building Terminal boxes, etc. have been installed extensively with the spread of optical communication.

That is, in the case of the drop cable, the diameter of the cable area including the optical fiber in the dual structure is 3 mm, and the width of the cable holder of the remote node terminal box is also designed to be about 3 mm.

Therefore, the conventional drop cable is still being used despite the above-mentioned problems, but in the process of installing the drop cable, the cable is re-installed due to damage and a wasted element remains.

An object of the present invention is to solve the problem of providing an optical jumper code that can be applied immediately to a conventional remote node terminal box while minimizing unnecessary waste and minimizing unnecessary damage even in a complicated indoor structure during indoor installation.

In order to solve the above problems, the present invention includes an optical cable including at least one optical fiber, a pair of optical connectors connected to both ends of the optical cable, and a pair of boot members supporting the inner ends of each optical connector. The optical cable provides an optical jumper cord including a shaft diameter section in which a diameter of a predetermined area is smaller than a diameter of another area.

In addition, the shaft diameter section may be provided in the vicinity of at least one optical connector of the pair of optical connectors.

In addition, the optical cable includes at least one optical fiber, a buffer made of a synthetic resin material surrounding the optical fiber, a tension line disposed outside the buffer made of the synthetic resin material, and an outer sheath surrounding the outside of the tension line, and the shaft diameter section of the optical cable is It can be configured by a method of reducing the thickness of the shell.

Here, the optical cable includes at least one optical fiber, a buffer made of a synthetic resin material surrounding the optical fiber, a tension line disposed outside the buffer made of the synthetic resin material, and an outer shell surrounding the outer surface of the tension line, wherein the shaft diameter of the optical cable is After the shell is peeled, it may be configured by a method of coating with a heat shrink tube thinner than the shell.

In this case, both ends of the shaft diameter section covered with the heat-shrinkable tube may be covered with an auxiliary tube.

In addition, the auxiliary tube may be made of the same material as the heat shrink tube.

In addition, the auxiliary tube covering the inner end of the shaft diameter section may simultaneously cover the heat-shrinkable tube and the outer sheath.

Here, the shaft diameter section is located within a range of 500 mm or less from the inner end of at least one boot member of the pair of boot members, and the shaft diameter section may be formed to have a length of 50 mm to 100 mm.

In this case, the optical connector close to the shaft diameter section is connected to a terminal box for optical distribution or optical connection having a cable holder having a width smaller than the diameter of the optical cable, and the shaft diameter section can be supported by the cable holder of the terminal box. .

In addition, the terminal box is provided in a building on an FTTH or FTTB optical communication network based on PON technology, and a remote node terminal box connected to a user unit (ONU) by the optical jumper code with a feeding cable branched in. Can be

And, the diameter of the shaft diameter is 2.0mm to 4.0mm, the diameter of the region other than the shaft diameter may be 4.0mm to 5.5mm.

Here, the outer shell of the optical cable may be made of any one of polyurethane, polyester elastomer and high density polyethylene.

In this case, a pair of optical connector protection members in the form of pipes fixed to the optical cable while receiving the pair of optical connectors may be further included.

In addition, the pair of optical connector protection members are made of a flexible synthetic resin material, and can be fixed to the optical cable with tapes of different colors.

In addition, the optical connector protection member mounted on the optical connector near the shaft diameter section may be attached with an adhesive tape of a different color from the optical connector protection member.

In addition, in order to solve the above problems, the present invention includes at least one optical fiber, a synthetic resin material buffer surrounding the optical fiber, a plurality of aramid yarns surrounding the synthetic resin material buffer outside, and the outside of the aramid yarn in advance. A polyurethane covering the determined area, a heat-shrinkable tube covering an area other than the predetermined area, and a pair of optical connectors respectively connected to both ends of the optical fiber, wherein the diameter of the area covered with the polyurethane is It provides a light jumper cord larger than the diameter of the area covered with the heat shrink tube.

In this case, the area covered with the heat-shrinkable tube may be provided in the vicinity of at least one optical connector among a pair of optical connectors.

In addition, the diameter of the area coated with the polyurethane is 4.0mm to 5.5mm, and the diameter of the area covered with the heat shrink tube may be 2.0mm to 4.0mm.

In addition, the area covered with the heat-shrinkable tube may be installed in a building, and a feeding cable may be introduced to be mounted on the cable holder of the terminal box connected to each user unit by the optical jumper cord.

According to the optical jumper cord according to the present invention, even in a complicated indoor structure during indoor installation, there is little possibility of optical fiber damage and sufficient strength can be secured.

In addition, according to the optical jumper code according to the present invention, it can be applied to a terminal box or the like, which has been conventionally distributed, and thus it is possible to prevent waste due to replacement of the terminal box.

Further, according to the optical jumper cord according to the present invention, the optical connector protection member is provided to prevent damage to the optical connector during the installation process of installing the optical jumper code along a complicated path in the building, thereby preventing damage to the optical connector. By preventing it, it is possible to obtain an effect of improving workability and reducing costs.

1 is a simplified configuration diagram of an FTTH optical communication network based on PON technology in which an optical jumper code according to the present invention can be used.
2 shows a remote node terminal box to which an optical jumper code according to the present invention is connected.
3 shows a light jumper code according to the present invention.
FIG. 4 is a sectional view of points ① and ④ of the optical cable constituting the optical jumper cord shown in FIG. 3.
FIG. 5 is a sectional view of points ② and ③ of the optical cable constituting the optical jumper cord according to FIG. 3.
6 is a block diagram of the manufacturing process of the optical jumper cord according to the present invention.
7 shows an optical jumper cord equipped with an optical connector protection member for protecting the optical connector during the installation process of the optical jumper cord.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. Rather, the embodiments introduced herein are provided to enable the disclosed contents to be thorough and complete, and to fully convey the spirit of the present invention to those skilled in the art. Throughout the specification, the same reference numbers refer to the same components.

1 is a simplified configuration diagram of an FTTH optical communication network based on PON technology in which the optical jumper code 100 according to the present invention can be used.

In the optical communication network according to the present invention, each user unit includes an optical line terminal (O, OLT: Optical Line Terminal), an optical distribution hub (F, FDH: Fiber Distribution Hub), and a remote node (R, RN: Remote Node). It can be connected to the network (N) through.

When a remote node (R) terminal box and a user unit (O, ONU: Optical Network Unit) are located at a long distance in one building, the optical jumper cord 100 according to the present invention can be used to connect.

If the remote node (R) terminal box and the user unit (O) are located at a remote or different floor within the building, the installation path of the optical jumper code becomes complicated, and the installation or installation of the optical jumper code can often bend or damage. The optical jumper cord 100 according to the present invention proposes a new type of optical jumper cord rather than an 8-shaped drop optical cable that was generally used as an indoor installation optical jumper cord.

The remote node (R) terminal box is installed inside the building in addition to the terminal box constituting the remote node, and a terminal box for branching into a plurality of optical jumper cords through an optical cable, for example, a wall mounting terminal box and a simple accommodation function for arranging a space. It is preferable that the terminal box having only a simple connection function is interpreted as an included concept.

2 shows a remote node terminal box 200 to which the optical jumper cord 100 according to the present invention is connected.

The remote node terminal box 200 is split by splitting a part of the optical fiber constituting the feeding optical cable fc after the feeding optical cable is introduced and the branched optical cable sc is connected to the present invention through the optical connection connector 230. It is connected to the optical jumper cord 100.

One of the pair of optical connectors constituting the optical jumper cord 100 is connected to the optical connection connector 230 of the remote node terminal box 200, and the optical cable connected to the optical connector is an optical cable holder 240 ) Is supported by the remote node terminal box 200 is drawn out, the other optical connector may be connected to the user unit side. The remote node terminal box 200 of the type shown in FIG. 2 is already in widespread use with an optical communication network.

The width (w) of the optical cable holder of the remote node terminal box 200 is mostly products configured to a size of about 3 mm to match the diameter of the optical cable area, not the conventional 8-shaped drop optical cable tension line.

However, in the process of installing a conventional drop optical cable in a complex indoor space, the drop optical cable is not sufficiently strong and frequently causes problems such as being easily broken or bent, so the optical jumper cord 100 according to the present invention solves this problem In order to propose an optical jumper cord, the optical cable constituting the optical jumper cord is configured to have sufficient durability, and can be installed in a remote node terminal box 200 that has been widely distributed. The structure of the optical jumper cord 100 according to the present invention will be described in detail with reference to FIG. 3 below.

3 shows an optical jumper cord 100 according to the present invention. The optical jumper cord 100 according to the present invention includes an optical cable 110 including at least one optical fiber, a pair of optical connectors 120 and 180 connected to both ends of the optical cable, and each of the optical connectors 120 and 180 ) Includes a pair of boot members (130, 190) supporting the inner end, and the optical cable (110) has a feature that includes a shaft diameter (X) in which a diameter of a predetermined area is smaller than a diameter of another area. .

The optical jumper cord 100 according to the present invention includes an optical cable 110 having a length of several tens of meters or more, and optical connectors 120 and 180 connected to both ends of the optical cable, and bending of the optical cable at the rear of each optical connector 120 and 180. It may be provided with a boot member (130, 190) to prevent.

The optical jumper code 100 according to the present invention relates to an optical jumper code for connecting a remote node terminal box and a user unit (ONU) in a building in an FTTH optical communication network based on PON technology, and has already been distributed and In order to reinforce the durability of the optical cable and the like so that the installed remote node terminal box can continue to be used without replacement, and to prevent damage to the optical jumper cord during the installation process of the optical jumper cord, the optical according to the present invention The jumper cord 100 may include an axis diameter section (X).

The shaft diameter section (X) prevents damage to the optical fiber during the process in which the optical jumper cord is mounted on an optical cable holder such as a remote node terminal box, and corresponds to the diameter of the optical cable area including the optical fiber such as a conventional drop optical cable. It is an area whose diameter is reduced to have a diameter.

The shaft diameter section (X) is formed to mount one region of the optical cable of the optical jumper cord to the optical cable holder of the remote node terminal box, so a pair of optical connectors 120 and 180 provided at both ends of the optical jumper cord It should be formed in a position close to the one side of the optical connector 120.

The shaft diameter section is preferably located within a section within about 500mm from the inner end of at least one boot member among the boot members supporting a pair of connectors.

Figure 3 is formed in the section (c) within about 500mm from the inner end of one of the boot member 130 of the shaft member (X) of the boot member (130, 190) supporting a pair of connectors (120, 180) An example is shown. However, if necessary, the shaft diameter section may be configured to be formed in the vicinity of a boot member supporting a pair of connectors, respectively.

That is, when the terminal box on the user unit side has a similar structure to the user unit side, such as an indoor terminal box constituting a remote node, the shaft diameter sections may be provided on both sides of the optical jumper cord.

In addition, the length (b) of the shaft diameter section (X) may be formed to a length of 50mm to 100mm. When the actual optical jumper cord 100 was constructed so that the shaft diameter (X) had a length of about 70 mm, it was confirmed that the optical cable holders of various types of remote node terminal boxes were stably supported.

In contrast to the present invention, that is, if the diameter of the predetermined area of the optical cable constituting the optical jumper cord should be larger than the diameter of the other area, simply attaching a separate member for taping or enlargement to the predetermined area may solve the problem simply. have. However, in some areas, in order to mount the cable, the diameter of a predetermined area of the optical cable should be small, and in the other areas, the diameter should be relatively large for durability, etc., there is no choice but to separately manufacture an optical cable having such characteristics.

The axial section (X) of the optical jumper cord 100 according to the present invention can be implemented by a method of thin injection molding the coating thickness of the outer jacket of the optical jumper cord 100, but the length of the optical jumper cord is varied as required. As it will be provided, it is not realistically easy to adjust the diameter of the injection mold for each longitudinal section of the optical cable constituting the optical jumper cord.

Therefore, the optical jumper cord 100 according to the present invention forms the shaft diameter section X in the following manner in addition to the method of adjusting the coating thickness of the outer sheath.

The optical jumper cord 100 according to the present invention is a method of covering the stripping area using a heat shrink tube 80 having a smaller thickness than the shell of the optical cable and stripping the sheath of the optical cable to form the shaft diameter section (X). The section X is formed.

In addition, the optical jumper cord 100 according to the present invention covers the boundary area of the heat shrink tube 80 coated on the shaft diameter section (X) to prevent bending of the boundary area and improve the airtightness of the auxiliary tube ( 90).

In the embodiment shown in FIG. 3, both boundary regions of the heat shrink tube 80 of the shaft diameter section X are covered by auxiliary tubes 90, respectively.

A portion of the first auxiliary tube 90a of the pair of auxiliary tubes 90 is inserted into the boot member 130 and the rest is exposed outside the boot member 130. In addition, since the second auxiliary tube 90b covers the boundary region between the heat-shrinkable tube 80 and the outer sheath, a portion of the second auxiliary tube 90b surrounds the heat-shrinkable tube 80 and the rest surrounds the outer sheath of the optical cable. It is configured to reinforce the stiffness of the boundary area of the shaft diameter section (X), and can also improve airtightness.

The first auxiliary tube (90a) reinforces the stiffness of the boundary region of the heat shrink tube (80) and at the same time compensates for the diameter of the shaft diameter (X) is smaller than the inner diameter of the boot member.

The second auxiliary tube 90b partially covers the outside of the heat-shrinkable tube 80 of the shaft diameter section X, and the other part covers the outer sheath of the optical cable once again.

In this case, the length (a) of the portion exposed to the outside of the boot member among the first auxiliary tube (90a), the length (a) of the covering portion of the heat shrink tube (80) of the second auxiliary tube (90b), and the second auxiliary tube It is preferable that the length (a) of the shell covering portion of (90b) is approximately similar.

FIG. 4 is a sectional view of points ① and ④ of the optical cable constituting the optical jumper cord shown in FIG. 3.

Specifically, FIG. 4(a) shows a cross-sectional view of point ① of the optical jumper code shown in FIG. 3, and FIG. 4(b) shows a cross-sectional view of point ④.

The optical cable constituting the optical jumper cord 100 according to the present invention includes at least one optical fiber 10, a synthetic resin material buffer 30 surrounding the optical fiber 10, and a synthetic resin material buffer 30 on the outside. It may include a tension line 50 to be disposed and the envelope 70 surrounding the outside of the tension line 50. 4 shows an embodiment in which one optical fiber 10 is coated with a synthetic resin buffer.

The coating of the optical fiber with a buffer made of a synthetic resin means a case in which it is coated with a'tight buffer' method so that no remaining space other than the optical fiber is generated.

The basic structure of the optical cable constituting the optical jumper cord 100 according to the present invention can be confirmed through a sectional view of point ① shown in FIG. 4(a).

The optical cable of the optical jumper cord 100 according to the present invention may have at least one optical fiber at its center, and the optical fiber may be covered with a synthetic resin buffer. The optical fiber 10 illustrated in FIG. 4 may be a bend intensive fiber (BIF). Since the bending of the optical fiber may occur frequently in a complicated installation path indoors, a bending reinforced optical fiber having a relatively improved bending stiffness may be used.

A polyvinyl chloride (PVC) material may be used as a buffer made of a synthetic resin material surrounding the optical fiber. The synthetic resin material may have an outer diameter of 0.8 mm to 1.0 mm.

The buffer 30 of the synthetic resin material should basically have a peeling force of about 5 cm to 15 cm at a time. A tension line 50 may be provided outside the buffer made of the synthetic resin material. The tension line 50 may be aramid yarn (Aramid Yarn), it may be provided with 9 to 15 numbers.

The outer side of the tension line 50 may be covered with an outer shell 70. The outer sheath 70 of the optical cable may be made of a polyurethane material, and the outer shell of the polyurethane material may be UV coated. The thickness of the sheath may have a thickness of 0.6mm to 1.0mm, and the sheath occupies the largest portion of the diameter of the optical cable.

In the case of the conventional optical cable, LSZH (Low Smoke Zero Halogen) material was mainly used for the outer sheath, but in the extruded state, the sheathing force was small due to poor adhesion with the tensile wire, but when using the outer sheath of polyurethane material, the outer sheath was sufficient. It is possible to secure the detachment force (a measure of adhesion between the envelope and the tension line). For example, as a result of testing the optical cable constituting the optical jumper cord 100 according to the present invention with an optical cable having a length of 70 centimeters, it was confirmed that it has a good sheathing force of 30 Kg or more.

In addition, the outer jacket of the light jumper cord according to the present invention may be a resin made of polyester elastomer (TPEE) or high density polyethylene (HDPE) in addition to the polyurethane material.

In addition, the outer sheath of the optical cable may be composed of any one of synthetic resins of polyurethane, polyester elastomer and high density polyethylene, and further, may be made of synthetic resin blended with the combination.

The overall diameter (D) of the optical cable of the optical jumper cord having such a structure may be configured to have a size of 4.0mm to 5.5mm.

When the optical cable of the optical jumper cord having such a diameter (D) is used to connect a remote node terminal box and a user unit (ONU), the diameter of the entire optical cable is increased compared to the conventional drop optical cable, so that it is easily disconnected or broken. Can alleviate.

However, since the width of the optical cable holder, such as a remote node terminal box, which has been widely used and used, is smaller than the width of the optical cable, damage to the optical fiber or signal loss may occur when a thick optical cable is forcibly inserted into the optical cable holder. The diameter of the optical cable constituting the optical jumper cord 100 is formed in a certain section to form a shaft diameter section X, and the shaft diameter section X is fixed to the optical cable holder.

Therefore, while strengthening the rigidity of the optical cables constituting the optical jumper code on the installation path of the optical jumper cord, the optical cable holder of the remote node terminal box can be stably mounted with minimal deformation or damage to the optical cable.

As described above, the axial section (X) of the optical cable of the optical jumper cord 100 according to the present invention may be formed by a method of reducing the injection thickness of the sheath, but the sheath is peeled off due to the practical problem of process management, and the outer sheath A method of applying a heat-shrinkable tube 80 with a small covering thickness can be used.

In order to reduce the diameter of the optical cable of the optical jumper cord by using the heat shrink tube 80 having a thickness smaller than the thickness of the outer sheath of the optical cable, the outer surface of the tension line must be covered with the heat shrink tube 80 after stripping the outer sheath of the optical cable.

As shown in Fig. 4(b), the diameter of the point ④, which is one point of the shaft diameter section X, is D', and has a smaller size than D, which is the diameter of the other area of the optical cable.

It has a size smaller than D, the diameter of the other area of the optical cable. As described above, the overall diameter (D) of the optical cable of the optical jumper cord is 4.0 mm to 5.5 mm, and the diameter of the point ④, which is one point of the shaft diameter section (X), is D'having a size of 2 mm to 4 mm. It can be reduced.

Therefore, the diameter of the point ④, which is one point of the overall diameter (D) and the shaft diameter (X) of the optical cable of the optical jumper cord, can select the thickness of the heat-shrinkable tube 80 so that the diameter of D'satisfies the above-mentioned range. have.

FIG. 5 is a sectional view of points ② and ③ of the optical cable constituting the optical jumper cord according to FIG. 3. Specifically, FIG. 5(a) shows a sectional view of point ② of the optical cable, and FIG. 5(b) shows a sectional view of point ③ of the optical cable.

The optical jumper cord 100 according to the present invention shown in FIGS. 3 and 4 strips the outer sheath 70 of the area corresponding to the shaft diameter section X to form the shaft diameter section X, and to the peeled region The heat shrink tube 80 may be coated by inserting and heating.

In this case, the boundary area between the shaft diameter section X of the optical cable and the sheath 70 may not be covered by the sheath or the heat shrink tube 80, and may be a point where the tension line therein is exposed to the outside.

Therefore, it has been reviewed that the auxiliary tube 90 is applied to reinforce the stiffness of the boundary region and to improve airtightness.

Therefore, if the auxiliary tube 90 has the same material and thickness as the heat shrink tube 80 covering the shaft diameter section X, the diameter D'' of the point ② of the optical cable shown in FIG. 5 is the heat shrink tube 80 And the diameter D''' of the point ③ covered with the auxiliary tube 90. This is because the thickness t2 of the heat shrink tube 80 or the auxiliary tube 90 is smaller than the thickness t1 of the sheath 70.

6 is a block diagram of the manufacturing process of the optical jumper cord 100 according to the present invention.

The optical jumper cord 100 according to the present invention inserts the heat shrink tube 80 and the boot member into the ends of the wound optical cables constituting the optical jumper cord (S100), and strips a predetermined area of the optical cable to form a shaft diameter section. (S200).

Then, in order to connect the optical fiber and the connector, the optical fiber and the ferrule are connected and the ferrule end face is polished (S300).

Thereafter, the heat-shrinkable tube 80 previously placed inside the optical cable is moved to the stripped area and heated to cover the stripped area (S400) to form a shaft diameter section (X). After forming the shaft diameter section (X), the auxiliary tube (90) is moved to both ends of the shaft diameter section (X), and then heated to be coated (S500).

In addition, by forming the optical connector housing and the boot member at the end of the optical cable (S600), the optical cable constituting the optical jumper cord is formed with a shaft diameter section (X) and an optical connector near the shaft diameter section (X) can be mounted. have.

In addition, when the optical cable is cut to a required length and an optical connector is attached to the end thereof, optical jumper cords having various lengths and each having a shaft diameter section X can be manufactured. By this method, it is possible to form the shaft diameter sections on the optical jumper cords having various lengths.

7 shows an optical jumper cord equipped with an optical connector protection member 300 for protecting the optical connector during the installation process of the optical jumper cord.

When the optical jumper cord 100 according to the present invention is disposed in a complex installation path, an operation such as towing and arranging the optical connector portion of the optical jumper code using a separate tool, etc. is not performed by a worker. Can be.

In this case, a problem such as a problem such as damage to the front end surface of the ferrule inside the optical connector or a break in the optical cable in the vicinity of the optical connector may occur. In order to solve the problem in the installation process, the optical jumper according to the present invention The cord 100 may further include an optical connector protection member 300 for protecting the optical connector and the nearby optical cable.

The optical connector protection member 300 may be a corrugated pipe made of synthetic resin (plastic, etc.). This is because it is necessary to provide some resistance to flexing and bending.

In addition, the optical connector protection member 300 can be fixed to each of the optical connector side of both ends of the optical jumper cord 100 according to the present invention, the operator can easily determine which connector side the shaft diameter section (X) is formed on To determine, the surface of the optical connector protection member 300 may be painted, printed or taped in an identifiable color.

Therefore, the operator can determine which side is the shaft diameter section (X) is formed by the distinct color, and remove the optical connector protection member 300 fixed to the optical connector provided near the shaft diameter section (X) To mount the optical connector in the remote node terminal box and to mount the other end of the optical connector to the user unit (ONU), the optical connector accommodated in the optical connector protection member 300 can be towed along the installation path to install the optical cable indoors. have.

The pair of optical connector protection members 300 fixed to the pair of optical connectors may be fixed to the optical connector side by adhesive tapes (t, t'), etc., respectively, and light mounted to the optical connector near the shaft diameter section The connector protection member may be fixed by an adhesive tape (t') of a color (eg, red) different from the color (eg, black) of the optical connector protection member.

Although this specification has been described with reference to preferred embodiments of the present invention, those skilled in the art variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You can do it. Therefore, if the modified implementation basically includes the components of the claims of the present invention, it should be considered that all are included in the technical scope of the present invention.

100: light jumper code
110: optical cable
X: Shaft diameter section
120, 180: Optical connector
130, 190: Boot member
70: heat shrink tube
90: auxiliary tube

Claims (19)

An optical cable comprising at least one optical fiber;
A pair of optical connectors connected to both ends of the optical cable;
Includes; a pair of boot members for supporting the inner end of each of the optical connector;
The optical cable includes a shaft diameter section in which a diameter of a predetermined area is smaller than a diameter of another area,
The shaft diameter section is provided near at least one optical connector of the pair of optical connectors,
The optical cable includes at least one optical fiber, a buffer made of a synthetic resin material surrounding the optical fiber, a tension line disposed outside the buffer made of a synthetic resin material, and an outer skin surrounding the outer tension line, and the shaft diameter section of the optical cable is the outer sheath. After the stripping, the optical jumper cord is characterized in that it is configured by a method of coating with a heat shrink tube thinner than the outer shell. delete An optical cable comprising at least one optical fiber;
A pair of optical connectors connected to both ends of the optical cable;
Includes; a pair of boot members for supporting the inner end of each of the optical connector;
The optical cable includes a shaft diameter section in which a diameter of a predetermined area is smaller than a diameter of another area,
The optical cable includes at least one optical fiber, a buffer made of a synthetic resin material surrounding the optical fiber, a tension line disposed outside the buffer made of the synthetic resin material, and an outer skin surrounding the outer tension line, and the shaft diameter section of the optical cable is the outer sheath. Light jumper cord, characterized in that configured in a way to reduce the thickness of the. delete According to claim 1,
Optical jumper cord, characterized in that both ends of the shaft diameter coated with the heat shrink tube is covered with an auxiliary tube. The method of claim 5,
The auxiliary tube is made of the same material as the heat shrink tube Optical jumper cord. The method of claim 6,
The auxiliary tube covering the inner end of the shaft diameter is a light jumper cord, characterized in that simultaneously covering the heat-shrinkable tube and the outer sheath. According to claim 1,
The shaft diameter section is located within a range of 500 mm or less from the inner end of at least one boot member of the pair of boot members, the shaft diameter section is formed with a length of 50mm to 100mm optical jumper cord. According to claim 1,
The optical connector close to the shaft diameter section is connected to a terminal box for optical distribution or optical connection having a cable holder having a width smaller than the diameter of the optical cable, and the shaft diameter section is supported by the cable holder of the terminal box. Jumper cord. The method of claim 9,
The terminal box is provided in a building on an FTTH or FTTB optical communication network based on PON technology, and is a remote node terminal box connected to a user unit (ONU) by the optical jumper code that is fed and branched with a feeding cable. Features a light jumper cord. According to claim 1,
The diameter of the shaft diameter is 2.0mm to 4.0mm, the diameter of the region other than the shaft diameter is 4.0mm to 5.5mm, characterized in that the optical jumper cord. The method of claim 1 or 3,
The outer jacket of the optical cable is made of a synthetic resin of any one of polyurethane, polyester elastomer and high-density polyethylene, optical jumper cord. According to claim 1,
An optical jumper cord, which is fixed to the optical cable while receiving the pair of optical connectors, and further comprises a pair of pipe-shaped optical connector protection members. delete The method of claim 13,
Optical jumper cord, characterized in that the optical connector protection member mounted on the optical connector in the vicinity of the shaft diameter section is attached with an adhesive tape of a different color from the optical connector protection member. At least one optical fiber;
A synthetic resin buffer surrounding the optical fiber;
A plurality of aramid yarns surrounding the outside of the synthetic resin buffer;
An outer shell composed of a synthetic resin of any one of polyurethane, polyester elastomer and high-density polyethylene covering a predetermined area outside of the aramid yarn;
A heat shrink tube covering an area other than the predetermined area;
Includes a pair of optical connectors that are respectively optically connected to both ends of the optical fiber,
The diameter of the area covered with the polyurethane is greater than the diameter of the area covered with the heat shrink tube,
The area where the heat shrink tube is coated is an area near at least one optical connector of the pair of optical connectors. delete The method of claim 16,
The diameter of the area coated with any one of the polyurethane, polyester elastomer and high density polyethylene synthetic resin is 4.0 mm to 5.5 mm, and the diameter of the area covered with the heat shrink tube is 2.0 mm to 4.0 mm. Light jumper cord. The method of claim 16,
The area covered with the heat-shrinkable tube is installed in a building, and a feeding cable is introduced and mounted on a cable holder of a terminal box connected to each user unit by the optical jumper code.

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