KR20220139558A - Optical ribbon and optical cable having the same - Google Patents

Abstract

The present invention relates to an optical ribbon, which facilitates the identification of an optical fiber ribbon when a plurality of optical fiber ribbons are laid together to construct a large-capacity optical fiber line, can add a waterproof function to the optical fiber ribbon, and can minimize additional processes such as a separate printing process when manufacturing the optical fiber ribbon. The optical ribbon includes: a plurality of optical fibers; and at least one identification wire, wherein adjacent optical fibers or identification wires among the plurality of optical fibers and the identification wire are bonded in parallel through a plurality of junctions spaced apart in the longitudinal direction.

Description

Optical fiber ribbon and optical cable having the same

The present invention relates to an optical fiber ribbon and an optical cable having the same. According to the present invention, when a plurality of optical fiber ribbons are installed together to construct a large-capacity optical fiber, it is easy to identify the optical fiber ribbon, and a waterproof function can be added to the optical fiber ribbon, and additional processes such as a separate printing process when manufacturing the optical fiber ribbon It relates to an optical fiber ribbon capable of minimizing , and an optical cable having the same.

For the construction of a large-capacity optical communication network, an optical fiber ribbon in which optical fibers are bonded side by side may be used.

An optical fiber ribbon is an integrated one by bonding a plurality of optical fibers side by side using a resin or the like, and is generally manufactured in the form of a strip, and is laminated to form a ribbon laminate in the form of a polygonal column.

Such an optical fiber ribbon is mainly used for a large-capacity communication network because of the advantage that it is possible to connect each optical fiber ribbon at the connection end.

Furthermore, a rollable optical fiber ribbon that can be installed in a cylindrical shape by rolling the optical fiber ribbon in the width direction in order to increase the usability of the space inside the tube installed in the conduit for optical communication network construction or the number of optical fiber cores accommodated in optical cables or optical units was introduced. .

In order to construct a large-capacity optical communication network, tens or hundreds of such rollable optical fiber ribbons may be rolled in the width direction in one circular duct or tube (or micro tube) and installed together.

Although it is possible to install dozens or hundreds of rollable optical fiber ribbons in one duct or tube, each rollable optical fiber ribbon must be identified at the end of the duct or tube.

In particular, if it is not easy to identify with the naked eye of an operator in an installation environment such as an underground tunnel with low illuminance, the installation performance may be significantly reduced.

To this end, a method of attaching a tag to each rollable optical fiber ribbon or a method of printing symbols or dots on the surface of the optical fiber ribbon after the optical fiber ribbon is manufactured may be considered. In the method of attaching a tag, the attached tag may be separated or lost, and the method of printing a symbol or a dot on the surface of an optical fiber ribbon is not preferable because a separate printing process is added.

According to the present invention, when a plurality of optical fiber ribbons are installed together to construct a large-capacity optical fiber, it is easy to identify the optical fiber ribbon, and a waterproof function can be added to the optical fiber ribbon, and additional processes such as a separate printing process when manufacturing the optical fiber ribbon It is a task to be solved to provide an optical fiber ribbon that can minimize the

In order to solve the above problems, the present invention provides a plurality of optical fibers; and at least one identification wire; wherein the plurality of optical fibers and adjacent optical fibers or identification wires among the identification wires are bonded in parallel through a plurality of bonding portions spaced apart in the longitudinal direction. can provide

In addition, the identification wire may be made of a yarn (yarn) material.

In addition, the identification wire may be made of a waterproof yarn material that swells when water is absorbed.

Here, the identification wire may be made of an aramid yarn or glass-reinforced fiber material.

In this case, the identification wire may be a wire made of a resin material.

In addition, the identification wire may be provided with a ribbon index for identifying the corresponding optical fiber ribbon among a plurality of optical fiber ribbons.

In addition, the ribbon index may be a symbol, a character, or a mark in a standardized form that is spaced apart in the longitudinal direction and printed on the outer circumferential surface of the identification wire to identify the corresponding optical fiber ribbon.

And, the ribbon index may be printed on the identification wire before the ribbon-forming process of the plurality of optical fibers and the identification wire.

Here, the identification wire may be coated with a resin.

In this case, the UV-curable resin may be a color or light-transmitting resin.

In addition, the outer diameter of the identification wire not coated with the resin may be smaller than the outer diameter of the optical fiber.

In addition, the number of the optical fibers is 12, and one identification wire may be bonded to the outermost edge of the optical fiber ribbon.

And, when rolling the optical fiber ribbon, the identification wire may be disposed outside.

In addition, in order to solve the above problems, the present invention is a plurality of the above-described optical fiber ribbon; And it may provide an optical cable comprising a jacket surrounding the plurality of ribbons.

And, it may include a grouping member for grouping the plurality of ribbons to form a sub-unit.

Here, the grouping member may be one of a binding yarn, a binding tape, and a loose tube.

In this case, the plurality of sub-units may be arranged around the central tension line.

In addition, at least one pair of reinforcing members for reinforcing rigidity in the jacket may be embedded in symmetrical positions.

According to the optical fiber ribbon and the optical cable having the same according to the present invention, it is easy to identify the optical fiber ribbon when a plurality of optical fiber ribbons are installed together to construct a large-capacity optical path.

In addition, according to the optical fiber ribbon and the optical cable having the same according to the present invention, since a waterproof function can be added to the optical fiber ribbon, the waterproof performance can be improved.

In addition, according to the optical fiber ribbon and the optical cable having the same according to the present invention, it is possible to maximize process efficiency by minimizing additional processes such as a separate printing process when manufacturing the optical fiber ribbon.

1 shows a plan view of an optical fiber ribbon according to one embodiment of the present invention.
FIG. 2 shows a cross-sectional view of one embodiment of the fiber optic ribbon shown in FIG. 1 ;
3 shows a plan view of an optical fiber ribbon according to another embodiment of the present invention.
4 shows a plan view of an optical fiber ribbon according to another embodiment of the present invention.
5 shows a plan view of an optical fiber ribbon according to another embodiment of the present invention.
6 shows a plan view of an optical fiber ribbon according to another embodiment of the present invention.
7 is a cross-sectional view showing a state in which the optical fiber ribbon according to the present invention is rolled.

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 so that the disclosed subject matter may be thorough and complete, and the spirit of the invention may be sufficiently conveyed to those skilled in the art. Like reference numbers refer to like elements throughout.

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 so that the disclosed subject matter may be thorough and complete, and the spirit of the invention may be sufficiently conveyed to those skilled in the art. Like reference numbers refer to like elements throughout.

1 shows a plan view of an optical fiber ribbon 100 according to one embodiment of the present invention, and FIG. 2 shows a cross-sectional view of one embodiment of the optical fiber ribbon 100 shown in FIG.

The present invention provides a plurality of optical fibers; and at least one identification wire; wherein the plurality of optical fibers and adjacent optical fibers or identification wires among the identification wires are bonded in parallel through a plurality of bonding portions spaced apart in the longitudinal direction. can provide

The present invention optimizes the bonding method in order to configure the optical fiber ribbon 100 by bonding the boundary regions of the optical fibers 10 arranged adjacent to each other with resin or the like along the longitudinal direction, and to efficiently use the space inside the tube or cable of the conduit. Thus, it was configured to be able to roll in the width direction.

When the optical fiber ribbon is rolled and rolled to form the optical fiber ribbon, it is possible to install the optical fiber ribbon while minimizing wasted space in one duct or tube.

In addition, the optical fiber ribbon according to the present invention is capable of rolling in the width direction and at the same time having an identification wire for easy identification of each optical fiber ribbon even when dozens or hundreds of optical fiber ribbons are installed inside one duct or tube. have A description of the identification wire is deferred.

First, a basic structure of an optical fiber ribbon according to the present invention and a method for configuring a joint capable of rollable installation will be described.

Typically a fiber optic ribbon may contain 4, 8, 12 or 24 fibers. The optical fiber ribbon shown in FIGS. 1 and 2 is configured with 12 optical fibers and one identification wire, but the number of optical fibers can be increased or decreased, and a plurality of identification wires may also be provided.

The optical fiber ribbon forms an optical fiber ribbon by arranging a plurality of optical fibers side by side and bonding adjacent optical fibers to each other. cannot be used

In order to secure the flexibility that enables the width direction rolling of the optical fiber ribbon 100, the present invention does not form the bonding portion 20 for bonding adjacent optical fibers 10 in the entire boundary region of the optical fiber 10, as shown in FIG. As described above, the bonding portion 20 for bonding the adjacent pair of optical fibers 10 was discontinuously configured in the boundary region of the pair of optical fibers 10 .

That is, by reducing the bonding strength of the bonding portion 20 for bonding the optical fiber 10 , the optical fiber ribbon 100 can be rolled in the width direction. However, as the size of the bonding portion 20 is small and the frequency is low, it will be easier to minimize the volume by rolling the optical fiber ribbon 100 in the width direction, but the optical fiber 10 is separated in the rolling process, and the installation of the optical fiber ribbon 100 In the process, a problem such as damage to the separated optical fiber 10 may occur.

Conversely, when increasing the size and frequency of the bonding portion 20 in order to prevent the separation of the optical fiber 10, the optical fiber ribbon 100 is not easily rolled or a specific optical fiber ( 10) If the optical fiber 10 is to be branched, the optical fiber 10 may be damaged in the process of branching or the branched optical fiber 10 may have a large amount of resin remaining, which may cause a problem that the optical fiber 10 is not neatly branched.

Therefore, in the present invention, it is possible to roll in the width direction, but the optical fibers 10 are not separated during the rolling process, and damage to the optical fiber 10 is prevented even when a specific optical fiber 10 is branched, and in order to enable easy branching, each A method of optimizing the length, spacing, period, or width of the non-bonding region in the width direction of the junction portion 20 was applied.

Specifically, in the present invention, the longitudinal length (a) of the optical fiber 10 of each junction 20 for bonding a pair of optical fibers 10 having a diameter of 300 μm or less disposed adjacently is 5 mm to 15 mm, and the junction ( The period (p) of 20) is 10 mm to 90 mm, and the length (c) of the non-bonding part 20 is configured to satisfy the range of 5 mm to 75 mm.

That is, without bonding the entire pair of adjacent optical fibers 10 in the longitudinal direction, 5 mm to 15 mm length (a) of the bonding portion 20 is formed at intervals of 10 mm to 90 mm, but bonding to the bonding portion 20 The length c of the unbonded portion 20 is 5 mm to 75 mm, so that rolling in the width direction is possible, but problems such as separation of the optical fiber 10 in the rolling process are prevented.

Among these length restrictions, the length (a) in the longitudinal direction of the optical fiber 10 of the junction part 20, the period (p), and the length (c) of the non-junction part 20 are made smaller than the above range, and Depending on the period (p) and the length (c) of the non-junction part 20, if the length (c) becomes larger than the above range, rolling is possible, but there is a problem that a plurality of junction parts 20 are damaged and the optical fiber 10 is separated, and the longitudinal length ( If a) is made larger than the above range and, accordingly, the period (p) and the length (c) of the non-junction part 20 are smaller than the above range, rolling is not easy and the optical fiber 10 is damaged or the specific optical fiber 10 is damaged in the rolling process. ), it was confirmed that branching is not easy.

And, in the embodiment shown in Fig. 1, the longitudinal length (b) of the optical fiber ribbon 100 in the non-bonded area that is not bonded by the bonding portion 20 in the width direction of the optical fiber ribbon 100 is 0 mm It was confirmed that it was advantageous to secure flexibility for rolling in the width direction to be configured to about 30 mm.

And, as shown in FIG. 1, when the optical fiber ribbon is composed of N optical fibers, the nth optical fiber 10 and the n+1th optical fiber 10 among the N optical fibers 10 (n is a natural number greater than or equal to 1) Two consecutive junctions joining the n+1-th optical fiber 10 and the n+2 (n+2 is a natural number less than N)-th optical fiber 10 in the longitudinal direction of the optical fiber 10 of the junction part 20 to be spliced (20) so as to be arranged in the longitudinal position center of the optical fiber ribbon 100 in the width direction can make uniform the longitudinal length (b) of the optical fiber ribbon 100 in the non-bonded area, and thus the entire longitudinal direction It is possible to ensure uniform widthwise flexibility in the position.

The optical fiber ribbon 100 of the embodiment shown in FIG. 1 is composed of 12, for example, the 4th (n, n=4)th optical fiber 10(4) and the 5th (n+1)th optical fiber 10 The positions of the plurality of splicing portions 20 spaced apart for splicing are spaced apart for splicing the 5 (n+1)th optical fiber 10(5) and the 6th (n+2)th optical fiber 10(6). The plurality of bonding portions 20 are arranged in the center so that the longitudinal length (b) of the optical fiber ribbon 100 in the non-bonding area in the width direction of the optical fiber ribbon 100 is uniformly minimized in the longitudinal direction of the optical fiber ribbon 100 . can be

On the other hand, the lengthwise position of the optical fiber 10 of the junction part 20 for bonding the n-th optical fiber 10 and the n+1-th optical fiber 10 among the N optical fibers 10 (n is a natural number greater than or equal to 1) is n+1. When the lengthwise position of the junction part 20 for bonding the th optical fiber 10 and the n+2 (n+2 is a natural number less than or equal to N) th optical fiber 10 is the same, the junction part 20 for bonding the optical fiber 10 ) is difficult to roll in the junction region arranged in the width direction, and the length of the non-bonding region in the width direction of the optical fiber ribbon 100 becomes long, making it difficult to roll the optical fiber ribbon 100 in the form of a pipe.

Therefore, it is more preferable that the bonding portions 20 for bonding a pair of optical fibers 10 are spaced apart in the longitudinal direction, and the bonding portions 20 bonding the adjacent pairs of optical fibers 10 are alternately arranged in the longitudinal direction. .

And, the length (a) in the longitudinal direction of the optical fiber 10 of each junction part 20 for bonding the optical fiber 10 having a diameter of 300 μm or less is 5 mm to 15 mm, and the period p of the junction part 20 is It is 10 mm to 90 mm, and when the length c of the non-bonding portion 20 satisfies 5 mm to 75 mm, rolling in the width direction is possible, but the problem such as separation of the optical fiber 10 in the rolling process is minimized Although it was confirmed that it can be, preferably, the length (a) in the longitudinal direction of the optical fiber 10 of each of the junctions 20 is 13.5 mm to 15 mm, and the period (p) of the junctions 20 is preferably 50 mm to 70 mm, and the length c of the unbonded portion 20 preferably satisfies 33.5 mm to 55 mm, thereby minimizing the possibility of optimal rolling performance and damage to the junction 20 or optical fiber 10 was confirmed.

In addition, the longitudinal length (a) of the optical fiber 10 of each of the junctions 20 is 13.5 mm to 15 mm, and the period p of the junctions 20 is preferably 50 mm to 70 mm, and the ratio The length c of the spliced portion 20 preferably satisfies 33.5 mm to 55 mm, and at the same time, the longitudinal length b of the optical fiber ribbon 100 in the unbonded region is preferably 10 mm to 20 mm. In the case of configuring the optical fiber ribbon 100 using the length and number of splicing portions 20, optimum flexibility could be provided.

In addition, the optical fiber 10 constituting the optical fiber ribbon 100 shown in FIGS. 1 and 2 may have a diameter of 200 μm or 250 μm, and when the identification wire also has a similar diameter, 12 optical fibers and one When the optical fiber ribbon 100 is configured by bonding the identification wire, the width W of the optical fiber ribbon 100 may be 3.5 mm or less in consideration of IEC standards or ANSI/ICEA standards related to optical cables.

In addition, the optical fiber ribbon 100 is ideally bonded so that the centers of the plurality of optical fibers 10 are disposed on the same axis on the basis of the cross-section as shown in FIG. 2 , but errors may occur during the bonding process. Even if an error occurs, the height deviation between the centers of adjacent optical fibers 10 constituting the optical fiber ribbon 100 is preferably minimized in order to provide optimal rolling performance.

2, the second optical fiber 10(2) and the ninth optical fiber 10(9) among the 12 optical fibers 10 constituting the optical fiber ribbon 100 are respectively higher than the reference height or Although spliced low, the height difference (p) between the centers of the second optical fiber (10(2)) and the ninth optical fiber (10(9)) is based on the IEC standard or ANSI/ICEA standard related to the optical cable. ) is preferably 75 µm or less, which is smaller than the radius of .

In addition, when an appropriate amount of resin is used, the bonding portion 20 may be cured in an inwardly curved shape like the bonding portions 20 shown in FIG. In this case, it may be cured in an outwardly curved form like the bonding portion 20 for bonding the 11th optical fiber 10(11) and the 12th optical fiber 10(12) in FIG. 2, and in this way, the bonding portion 20 ) protrudes to the outside of the optical fiber 10, the maximum thickness (h) of the junction 20 should be equal to or less than 360 μm, which is a limit based on the IEC standard or ANSI/ICEA standard related to the optical cable.

In addition, the bonding portion 20 of the optical fiber ribbon 100 according to the present invention may be configured by UV curing or laser sintering of various resins or resins such as UV curable resin or laser sintering powder, but it is possible to roll in the width direction while rolling It was confirmed through repeated experiments that it is necessary to have at least the following physical properties in the hardened or sintered state to minimize the separation of optical fibers in the process.

That is, the bonding portion 20 requires a high elongation compared to the bonding portion 20 using a conventionally generally used resin to allow the rolling of the optical fiber ribbon, and specifically, the cured or sintered resin is 120% to 250% It needs to have some degree of elongation.

In addition, the material is selected so that the elastic cross modulus of the cured or sintered resin is about 1 Mpa to 200 Mpa based on 2.5% strain so that the resin can be rolled in the width direction or maintained in a rolling state, so that the joint 20 is mainly used in the prior art. It is preferable to have a lower elastic modulus than the joint 20 made of the old resin.

In order to form a plurality of joint portions 20 spaced apart in the longitudinal direction of the optical fiber as described above, the application is accurately and quickly applied, but proper flowability is required to prevent the properties from falling before curing or sintering.

The junction portion of the optical fiber ribbon is composed of a general coating method of a resin, and the viscosity of the resin used in the general application method may be 4,000 mPa·s to 6,000 mPa·s at 25°C.

Here, the general coating method may be a roller coating method using a roller having a shape in which a resin injection part is provided and a resin injection is possible periodically.

In this case, the bonding portion of the optical fiber ribbon is composed of a precision coating method of a resin, and the viscosity of the resin used in the precision coating method may be 500 mPa·s to 1,500 mPa·s based on 25°C.

The present invention configures the optical fiber ribbon 100 using a plurality of optical fibers 10 and at least one identification wire 60 . The identification wire 60 may be provided to identify, waterproof, or reinforce tensile force of the optical fiber ribbon 100 when a plurality of rollable optical fiber ribbons 100 are installed in one duct.

The identification wire 60 is bonded in the same manner as the optical fiber 10 constituting the optical fiber ribbon 100 as described above and is configured in an outer diameter or cross-sectional shape corresponding to the optical fiber 10, the existing optical fiber ribbon 100 It can be ribbonized together as equipment to configure. In addition, it may have a smaller cross-sectional area compared to the optical fiber 10 for narrowing the cable.

In addition, since the optical fiber ribbon 100 according to the present invention is manufactured together with the ribbon forming process, a separate tag attachment or printing process for identification of the optical fiber ribbon 100 can be omitted.

The identification wire 60 may be made of a yarn material so as not to be easily erased when printing an identification index, which will be described later. In addition, the identification wire 60 may be made of a waterproof yarn material that swells when water is absorbed.

When the identification wire 60 is made of a waterproof yarn material, each optical fiber ribbon 100 is provided with a waterproof yarn, so that waterproofing means are uniformly provided in the entire area within the duct or tube, thereby improving waterproof performance. .

The waterproof yarn may be formed by coating or applying a waterproof material such as waterproof powder to a fiber manufactured using polyester or the like.

The waterproof powder, polyacrylate-based, PVA maleic acid reactant, isobutylene maleic acid copolymer, polyacrylonitrile polymer, polyethylene oxide crosslinked product, starch acrylonitrile polymer, starch acrylic acid graft polymer, sarin-based material can be composed of Among the waterproof powders, polyacrylate-based has a fast absorption rate and excellent absorption rate. PVA with improved flame resistance, polyethylene oxide, sulfone group, sulfate group, phosphoric acid group, etc. may be added to the waterproof powder.

In addition, the identification wire 60 may be composed of aramid yarn. Since the aramid yarn is a fiber mainly used for reinforcing tensile force, when the identification wire 60 is composed of an aramid yarn, the tensile strength of each optical fiber ribbon 100 can be reinforced, so that the physical properties of the optical fiber ribbon 100 are improved. It is possible to prevent light loss by reinforcing and providing stable optical characteristics.

For the same reason, the identification wire 60 may be made of a glass reinforced fiber (FRP) material. Unlike aramid yarn, glass reinforced fiber (FRP) can be manufactured by an extrusion process, so it is easy to manufacture in a shape similar to the optical fiber 10 and the tensile strength of the optical fiber ribbon 100 can be further increased.

Hereinafter, various embodiments of the optical fiber ribbon 100 according to the present invention will be described.

3 shows a plan view of an optical fiber ribbon 100 according to another embodiment of the present invention, FIG. 4 shows a plan view of an optical fiber ribbon 100 according to another embodiment of the present invention, and FIG. It shows a plan view of the optical fiber ribbon 100 according to another embodiment, and FIG. 6 shows a plan view of the optical fiber ribbon 100 according to another embodiment of the present invention. A description overlapping with the description with reference to FIGS. 1 and 2 will be omitted.

The present invention configures the optical fiber ribbon 100 using a plurality of optical fibers 10 and at least one identification wire 60 . The identification wire 60 may be provided to identify, waterproof, or reinforce tensile force of the optical fiber ribbon 100 when a plurality of rollable optical fiber ribbons 100 are installed in one duct.

In the embodiment shown in FIG. 3 , a ribbon index 61 for identifying the corresponding optical fiber ribbon 100 among a plurality of optical fiber ribbons 100 may be provided.

The ribbon index 61 may be a symbol, a character, or a mark in a standardized form that is spaced apart in the longitudinal direction and printed on the outer circumferential surface of the identification wire 60 in order to identify the corresponding optical fiber ribbon 100 .

In the embodiment shown in Fig. 3, the ribbon index 61 is a symbol in the form of a stripe, for example, through the number of stripes to identify that the optical fiber ribbon 100 is the third optical fiber ribbon 100. It can be configured to

The ribbon index 61 may be a symbol, a character, a standardized mark, or a combination thereof.

In addition, the ribbon index 61 may be configured to be printed on the identification wire 60 before the ribbon-forming process of the plurality of optical fibers 10 and the identification wire 60 .

In the conventional optical fiber ribbon 100, there was a case where an identification index was displayed along the longitudinal direction of the optical fiber ribbon 100 in a printing method by utilizing the entire area of the optical fiber ribbon 100, but the entire area of the optical fiber ribbon 100 was utilized. Thus, in order to print the identification index, a separate printing process is required after the ribbon forming process of the optical fiber ribbon 100 is completed.

However, in the case of the optical fiber ribbon 100 shown in FIG. 3 , the ribbon index 61 is to be printed on the identification wire 60 before the ribbon forming process of the plurality of optical fibers 10 and the identification wire 60 . can

That is, since the manufacturing of the optical fiber ribbon 100 can be completed at the same time as the ribbon-forming process is completed by putting the identification wire 60 on which the identification index is printed in advance, the process and cost can be lowered to have competitiveness.

The embodiment shown in FIG. 4 is an embodiment in which a coating layer 66 is added after the ribbon index 61 is printed on the identification wire 60 and the surface is coated with a resin or the like.

In order to prevent the identification index from being erased due to continuous friction or the like even when the identification wire 60 is composed of a fiber material, or to prevent a defect in the ribbon forming process of the identification wire of the fiber material and the optical fiber 10 The identification wire 60 may be smoothly coated with a resin.

When the identification wire 60 is coated with a resin, the coating resin for forming the coating layer 66 may be a transparent resin, and the coating resin may be UV-rayed to enable the identification of the ribbon index 61. It may be a curable resin.

When the resin coating layer 66 is applied to the identification wire 60, the outer diameter of the identification wire 60 before coating is adjusted so that the diameter of the coated identification wire 60 and the outer diameter of the optical fiber 10 have a corresponding size. 10) may be smaller than the outer diameter.

The embodiment shown in FIG. 5 shows an example in which the identification wire 60 is composed of a wire made of a general resin material rather than a fiber lipid. If the color of the wire is configured in various ways, it can provide an identification function by itself.

In the embodiment shown in Fig. 6, the identification wire 60 is composed of a wire made of a general resin material rather than a fiber lipid, similar to the embodiment shown in Fig. 5, and a ribbon index 61 in the form of a dot is formed on the surface of the identification wire. A prepared embodiment is shown.

The ribbon index 61 may be provided at a predetermined interval in the longitudinal direction of the identification wire 60 is the same. When the ribbon index 61 has two dots, it can be identified that the corresponding optical fiber ribbon 100 is the second optical fiber ribbon 100 .

When the identification wire 60 shown in FIG. 6 is made of a material such as nylon resin and the ribbon index 61 is printed on the surface of the identification wire 60, it can be erased by friction, so the optical fiber ribbon 100 shown in FIG. ) may be used by coating the identification wire 60 with a light-transmitting UV-curable resin or the like, similarly to the optical fiber ribbon 100 shown in FIG. 4 . Light-transmitting UV-curable resins are constructed to be light-transmissive, but may have a unique color.

7 is a cross-sectional view showing a state in which the optical fiber ribbon 100 according to the present invention is rolled.

The optical fiber ribbon 100 according to the present invention is provided with an identification wire 60 for identification, and the optical fiber ribbon 100 may be mounted in a rolled state in a duct or tube.

And, as shown in FIGS. 1 to 7, 12 optical fibers 10 constituting each optical fiber ribbon 100 are provided, and one identification wire 60 is provided, but the identification wire is at the outermost edge. can be joined.

It is preferable that the optical fiber ribbon 100 according to the present invention be able to identify the rolled ribbon wire even in a rolled state without unfolding the rolled ribbon wire for identification or classification of the optical fiber ribbon 100 .

Therefore, as shown in Figure 7, the identification wire 60 constituting the optical fiber ribbon 100 so that the identification wire 60 is exposed to the outside in the optical fiber ribbon 100 according to the present invention in a rolled state is a rolling process It is preferable to configure to be disposed at the outer end.

In addition, the present invention may provide an optical cable (not shown) including a plurality of optical fiber ribbons and a jacket surrounding the plurality of ribbons.

Here, it may be configured to include a grouping member forming a sub-unit by grouping the plurality of ribbons, and a plurality of such sub-units may be provided in the optical cable jacket.

In addition, the grouping member may be one of a binding yarn, a binding tape, and a loose tube.

In addition, the optical cable may include a central tension line, and a plurality of the sub-units may be disposed around the central tension line. Here, the jacket may be composed of at least one pair of reinforcing members for reinforcing rigidity, for example, tensile fibers or FRP wires, and the reinforcing members may be embedded in symmetrical positions.

Although the present specification has been described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention as set forth in the claims described below. will be able to carry out Therefore, if the modified implementation basically includes the elements of the claims of the present invention, all of them should be considered to be included in the technical scope of the present invention.

100: fiber optic ribbon
10: optical fiber
20: junction
60: identification wire

Claims (18)

a plurality of optical fibers; and,
at least one identification wire; and
An optical fiber ribbon, characterized in that adjacent optical fibers or identification wires of the plurality of optical fibers and the identification wire are bonded in parallel through a plurality of bonding portions spaced apart in the longitudinal direction. The method of claim 1,
The identification wire is an optical fiber ribbon, characterized in that composed of a yarn (yarn) material. 3. The method of claim 2,
The identification wire is an optical fiber ribbon, characterized in that it is composed of a waterproof yarn material that swells when water is absorbed. 3. The method of claim 2,
The identification wire is an optical fiber ribbon, characterized in that the aramid yarn or glass-reinforced fiber material. According to claim 1,
The identification wire is an optical fiber ribbon, characterized in that the wire made of a resin material. According to claim 1,
The identification wire is an optical fiber ribbon, characterized in that provided with a ribbon index for identifying the corresponding optical fiber ribbon among a plurality of optical fiber ribbons. 7. The method of claim 6,
The ribbon index is an optical fiber ribbon, characterized in that it is a symbol, a character, or a mark in a standardized form printed spaced apart in the longitudinal direction on the outer peripheral surface of the identification wire in order to identify the corresponding optical fiber ribbon. 7. The method of claim 6,
The ribbon index is an optical fiber ribbon, characterized in that printed on the identification wire before the ribbon-forming process of the plurality of optical fibers and the identification wire. According to claim 1,
The identification wire is an optical fiber ribbon, characterized in that coated with a resin. 10. The method of claim 9,
The UV-curable resin is an optical fiber ribbon, characterized in that the color or light-transmitting resin. 10. The method of claim 9,
The optical fiber ribbon, characterized in that the outer diameter of the identification wire not coated with the resin is smaller than the outer diameter of the optical fiber. According to claim 1,
The number of the optical fibers is 12, and one identification wire is bonded to the outermost edge of the optical fiber ribbon. 13. The method of claim 12,
When the optical fiber ribbon is rolled, the optical fiber ribbon, characterized in that the identification wire is disposed on the outside. A plurality of optical fiber ribbons according to any one of claims 1 to 13;
An optical cable comprising a jacket surrounding the plurality of ribbons. 15. The method of claim 14,
an optical cable comprising a grouping member forming a sub-unit by grouping the plurality of ribbons; 16. The method of claim 15,
The grouping member is an optical cable, characterized in that one of a binding yarn, a binding tape, and a loose tube; 16. The method of claim 15,
including the central tension line;
A plurality of the sub-units are optical cable, characterized in that disposed around the center tension line. 15. The method of claim 14,
An optical cable, characterized in that at least one pair of reinforcing members for reinforcing rigidity are embedded in the jacket at symmetrical positions.

Images