JP3972203B2 - Optical wiring component and method for manufacturing optical wiring component - Google Patents

Description

  The present invention relates to an optical wiring component used when wiring a plurality of optical fibers or optical fiber ribbons, and a manufacturing method for manufacturing the optical wiring component.

  In recent years, large-capacity optical communication networks based on wavelength division multiplexing (WDM) transmission technology have been developed in the field of optical communication using optical fibers. Along with this, in order to optically connect between multiple optical components with an optical connection box or the like for constructing an optical access network, a plurality of optical fibers are collectively handled and optically connected.

As optical wiring components for handling a plurality of optical fibers collectively, various forms suitable for respective uses are known (for example, see Patent Documents 1 and 2).
For example, an optical fiber branching component according to Patent Document _1, t _1, t 2, and n number of multi-fiber connector · · · _{t n-centered, t 1 + t 2 + ···} + t n Heart multifiber connector Are optical fiber branching parts connected by optical fiber cords via optical fiber branching parts, and this optical fiber cord is made up of n multicore connectors corresponding to each of the n multicore connectors on the n multicore connector side. while being branched into multifiber fiber _{cord, t 1 + t 2 + ···} + t in _n-centered multi-fiber connector end has been combined into one multi-fiber optical fiber cord, an optical fiber array of the intermediate section in the conversion unit, is separated into single core optical fiber, that the sequence is changed, t ₁ heart t _n fiber array mind and t _{1 +} t when arranged n number of multi-fiber connectors in a predetermined order ₂ + ... + t _n hearts The fiber arrangement in the connector is different.
That is, this optical wiring component is capable of connecting one multi-fiber connector to a plurality of multi-fiber connectors, separating the multi-fiber optical fibers into single cores at the conversion array section, and converting the array into a plurality Branches to the optical fiber ribbon of the book.

Further, for example, the optical fiber array conversion core described in Patent Document 2 has two sets of re-tapeed optical fibers in which one end side is formed as at least one optical fiber tape and the other end side is re-taped. From one end side to the other end side, the optical fiber tapes on one end side are separated one by one, the arrangement state is converted, and then re-tapeed to re-tape light on the other end side Each re-taped optical fiber on the other end side has at least one optical fiber included in each re-taped optical fiber on one end side.
That is, this optical wiring component can be bent without difficulty by having a portion that is separated into a single core and is not re-taped.

Japanese Patent No. 3311040 JP 2002-228898 A

By the way, when a plurality of optical components are accommodated in an optical junction box or the like and connected to an optical wiring, a location for fixing a fusion reinforcing portion, a location for processing an extra length of an optical fiber, a bending radius at which the optical fiber bends Is predetermined. Generally, in a place where a plurality of optical fibers are integrated, it becomes difficult to handle by bending or twisting at the time of wiring. The bendability is improved by separating the single core.
However, the conventional optical wiring component does not take into account the extra length processing that accompanies the failure during the fusion splicing operation that is required during the housing operation.

  An object of the present invention is to provide an optical wiring component that can improve the connection workability required for the housing work.

The optical wiring component according to the present invention capable of achieving the above object includes a bundling portion in which a plurality of optical fibers or a plurality of optical fiber ribbons having a plurality of optical fibers are bundled in the longitudinal direction. The optical fiber parts are arranged in a planar shape in the bundling part, and the optical wiring parts are other optical wiring parts or optical fibers. When the bending radius of the optical wiring component to be subjected to surplus length processing in the surplus length processing section in the optical module is R, the bundling portion is formed. The bundling pitch is 2πR / n (π is a pi, n is a natural number).

  Moreover, in the optical wiring component of the present invention, it is preferable that the optical fibers are arranged side by side at an equal pitch in the binding portion.

  In the optical wiring component of the present invention, it is preferable that the optical fiber or the optical fiber ribbon is integrated in the binding portion.

  Further, in the optical wiring component of the present invention, the optical fiber or the optical fiber tape core wire is covered with an adhesive at the binding portion, and the adhesive includes a depression between adjacent optical fibers or optical fiber tape core wires. It is preferable that a concave portion corresponding to is formed.

  Further, in the optical wiring component of the present invention, the optical fiber or the optical fiber ribbon is bonded with resin at the bundling portion, and the thickness of the portion where the resin is provided is the outer diameter of the optical fiber or the optical fiber tape. It is preferable that the thickness of the core wire is not exceeded.

  In the optical wiring component of the present invention, it is preferable that the optical fiber or the optical fiber ribbon is bundled by bonding to the film in the binding portion.

  Moreover, in the optical wiring component of the present invention, it is preferable that the length per one bundling portion is 25 mm or more.

  In the optical wiring component of the present invention, it is preferable that the length per one separation portion is three times or more the entire width in which the optical fibers in the binding portion are arranged.

  Moreover, in the optical wiring component of the present invention, it is preferable that the arrangement order of the optical fibers between the adjacent bundling portions is changed via the separating portion.

  In the optical wiring component of the present invention, it is preferable that the optical component is connected.

  In the optical wiring component of the present invention, the binding pitch is preferably in the range of 47.1 mm to 188.4 mm.

  In the optical wiring component of the present invention, it is preferable that the connection is made in a multi-core batch at the binding portion.

  In the optical wiring component of the present invention, it is preferable that the connection is made for each single core in the separation portion. In the fusion splicing for each single core, the cores of the optical fibers can be directly aligned and connected, and the loss of the connecting portion can be suppressed lower than that of a multi-core lump.

  Moreover, the manufacturing method of the optical wiring component according to the present invention that can achieve the above-described object is a plurality of optical fibers arranged in a plane, or an optical fiber ribbon having a plurality of optical fibers, It is characterized in that an optical fiber or an optical fiber ribbon is bundled intermittently in the longitudinal direction to form a bundled portion where the optical fiber or the optical fiber ribbon is bundled and a separation portion which is not bundled. Yes.

  In addition, the manufacturing method of the optical wiring component according to the present invention that can achieve the above-described object provides a total length of a plurality of optical fibers arranged in a plane or a plurality of optical fiber ribbons having a plurality of optical fibers. Are collectively covered with resin, and then the resin is intermittently removed in the longitudinal direction of the optical fiber, so that the bundled portion in which the optical fibers or the optical fiber ribbons are bundled, and the unbundled separating portion It is characterized by forming.

  According to the present invention, it is possible to improve the connection workability required for the housing work.

Hereinafter, an example of an embodiment of an optical wiring component and a method of manufacturing the optical wiring component according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of the optical wiring component of the present embodiment. FIG. 2 is a schematic plan view of the optical wiring component of the present embodiment.
As shown in FIGS. 1 and 2, the optical wiring component 1 of the present embodiment has a plurality of optical fibers 10 arranged in parallel in a planar shape, and a plurality of portions are intermittently bundled in the longitudinal direction. It is a thing. That is, the bundling portions where the optical fibers 10 are bundled and the separated separation portions are alternately formed. In this embodiment, an example in which twelve optical fibers 10 are used is illustrated. However, in the present invention, the number of optical fibers 10 may be any number. For example, 2, 4, 8, 12, 24 A form using any of the books can be cited as a suitable example.

FIG. 3 shows a cross-sectional view of the optical wiring component 1 in the bundling portion 11.
As shown in FIG. 3, in the bundling portion 11 in which twelve optical fibers 10 are bundled, the adhesive 12 integrally covers the entire circumference of each optical fiber 10. The bundling portion 11 is easily formed by covering the desired portion in the longitudinal direction with the adhesive 12 using a mold or the like with the twelve optical fibers 10 arranged in a plane. be able to.
In this bundling portion 11, the optical fibers 10 are preferably in contact with each other in the parallel direction (lateral direction shown in FIG. 3). In this case, the optical fibers 10 are arranged side by side at an equal pitch. Further, the optical fibers 10 do not necessarily need to be in contact with each other, but it is preferable that the optical fibers 10 are arranged at an equal pitch by providing an appropriately set desired interval, for example, an interval of 10 μm.
As the material of the adhesive 12, an acrylic adhesive or the like can be suitably used.

  In this embodiment, the optical fibers 10 are integrated and bundled using the adhesive 12, but an ultraviolet curable resin may be used instead of the adhesive. In that case, after the ultraviolet curable resin is applied around the arranged optical fibers, the ultraviolet rays are irradiated only to the portion where the optical fibers are bound, and the applied ultraviolet curable resin is cured to form a binding portion. be able to. The ultraviolet curable resin at the place where the ultraviolet rays are not irradiated can be easily removed with a solvent, and a separation part can be formed.

Since the plurality of optical fibers 10 are arranged in parallel in a planar shape, the bundling portion 11 is suitable for use as a place to be connected to other multi-core optical wiring components, multi-fiber connectors, and the like. Further, as described above, it is more preferable that the arrangement of the optical fibers 10 is equal pitch.
Furthermore, the binding part 11 of this embodiment is formed so that the length L1 per one part of the binding part 11 shown in FIG. 1 is 25 mm or more. Generally, the length required for a fusion splicer is about 25 mm. Therefore, if the length L1 of the bundling portion 11 is 25 mm or more, a length necessary for removing the coating at the time of multi-core fusion splicing can be ensured, and the connecting work is easy to perform.

  Further, in the optical wiring component 1, a portion that is not bound, that is, a portion other than the binding portion 11 is a separation portion in which each optical fiber 10 is independently separated. Since each optical fiber 10 is separated, the separating portion is less constrained than the binding portion. Therefore, when the optical wiring component 1 is handled by being bent or twisted, It is easy to miss the torsional load. In the present embodiment, the length L2 per location of the separating portion shown in FIG. 1 is three times or more than the entire width L3 (see FIG. 3) in which the optical fibers 10 in the binding portion 11 are arranged. It is set as follows. For example, when an optical wiring component is configured using 24 optical fibers, the total width L3 of the optical fiber 10 to be paralleled at the bundling portion is about 6 mm, and therefore the length L2 of the separating portion is 18 mm or more, for example, 20 mm. It is good if it is about.

Here, the optical fiber 10 will be described. The optical fiber 10 has a configuration in which a glass fiber 13 having a core and a clad and the outer periphery of the glass fiber 13 are covered with a protective coating layer 14. The protective coating layer 14 may consist of a plurality of layers. A colored layer having a thickness of about 1 μm to 10 μm may be formed on the outer periphery of the protective coating layer 14. Further, a thin film carbon layer may be coated around the glass fiber 13. The optical fiber 10 preferably conforms to G652 defined by ITU-T (International Telecommunication Union-Telecommunication standardization sector).
As the glass fiber 13 applicable to the present invention, a glass fiber having any refractive index distribution, such as a glass fiber composed of a core and a clad having a plurality of layers, can be applied.

Moreover, as the glass fiber 13, it is preferable that the mode field diameter (MFD: Mode Field Diameter) by the definition of Petermann-I in wavelength 1.55 micrometer is 10 micrometers or less. Furthermore, the mode field diameter is more preferably 8 μm or less.
When the mode field diameter is reduced, microbend loss and bending loss (macrobend loss) can be reduced. Therefore, it is possible to suppress an increase in transmission loss due to an external force received when the optical wiring component 1 is handled, a bending when accommodated in an optical module, or the like.

  When the mode field diameter of the optical fiber is reduced, the allowable bending diameter can be reduced. For example, an optical fiber having a minimum bending radius of 7.5 mm can be obtained. When using such an optical fiber as an optical wiring component, considering the bending radius at the time of extra length processing when accommodated in an optical module or the like to match the minimum bending diameter of the optical fiber, It is preferable to adjust an interval for forming the separation portion. For example, when the bending radius of the extra length processing is matched with an optical fiber having a minimum bending radius of 7.5 mm, the length when the optical fiber is bent by one turn with the minimum bending diameter is 47.1 mm. If the bundling pitch P shown in FIG. 4 is set to 47.1 mm, the bundling portion and the separating portion can be arranged at the same position every time the optical wiring component wound around the surplus length processing portion is fed out one turn. That is, when the optical wiring component housed in the extra length processing section is fusion-bonded to another optical fiber or the like, multi-core batch fusion can be performed at the bundling portion arranged at a desired position. And even if the fusion operation fails, the splicing connection can be performed again at the same position by feeding out one more optical wiring component from the extra length processing section.

  In addition, the bundling portion 11 shown in FIG. 3 has an adhesive (or the entire outer diameter of the optical fiber 10 so that the thickness of the optical fiber 10 becomes equal, similarly to the shape of a generally used optical fiber ribbon. (UV curable resin) 12 is covered, but this may be in other forms. Examples of other forms are shown in FIGS. 4 to 7 show a case where there are four optical fibers in the bundling portion, and FIG. 8 shows a case where there are 12 optical fibers in the bundling portion.

  The bundling portion 11a shown in FIG. 4 is formed with a thinner ultraviolet curable resin (or adhesive) 12a than a coating layer constituting the outermost layer of a conventionally used optical fiber ribbon. The thickness t of the resin 12a is t = (T−d) / 2, where T (μm) is the maximum thickness of the bundling portion 11a and d (μm) is the outer diameter of the optical fiber 10. The bundling portion 11a is set so that T ≦ d + 40 (μm), that is, the thickness t of the resin 12a is 20 μm or less.

In addition, a recess 16 is formed in the resin 12a according to a recess formed between the adjacent optical fibers 10. A bottom portion 17 is formed in the concave portion 16 as a portion having the largest depression.
Here, the thickness of the resin formed around the optical fiber 10 is preferably thinner from the viewpoint of reducing polarization mode dispersion (PMD), and may be about 0.5 μm. However, when actually manufacturing such a binding part, it is preferable that the resin has a certain thickness. The reason is that if the resin is formed to be thin, there is a possibility that the resin is not partially applied (this is referred to as “out of resin”). Therefore, it is desirable to form the resin with a thickness of 2.5 μm or more with respect to the optical fiber 10. In that case, in order to reduce the amount of resin in the thickness direction of the bundling portion while maintaining the desired resin thickness, the resin formed in the recesses between adjacent optical fibers may be reduced. The portion where the resin breakage is likely to occur is the portion where the outer diameter of the optical fiber is the largest in the thickness direction of the bundling portion, so reducing the amount of resin between adjacent optical fibers ensures that the resin is applied. I will not prevent it.

  When manufacturing an optical wiring component having a bundling portion having such a concave portion, first, an ultraviolet curable resin layer is formed around the arranged optical fibers, and the entire longitudinal direction is shown in FIG. Form the shown binding part. And the resin 12a of the location which should be a separation part is removed from the optical fiber 10, and an optical wiring component is intermediately separated. Thereby, a bundling part and a separation part are formed alternately. In addition, since the concave portion 16 is formed in the resin 12a, it is easy to separate the optical fiber 10 by peeling the resin 12a from the optical fiber 10. The more the resin 12a is thinner, the more likely the resin 12a is to be broken. Therefore, the separation operation is facilitated, and the external force applied to the optical fiber during the separation operation can be reduced.

  4 is formed such that the depth Y of the recess 16 is shorter than the distance between the common tangent S1 of the resin 12a and the common tangent S2 of each optical fiber 10. That is, the concave portion 16 is formed so that the position of the bottom portion 17 is located outside the common tangent line S <b> 2 of each optical fiber 10.

  Moreover, in this binding part 11a, since the concave part 16 is formed in the resin 12a, it is easy to bend in the width direction, and when the binding part 11a is accommodated in the optical module, an excessive force is applied to the binding part 11a. Therefore, it is considered that the difference in line length generated between the optical fiber arranged at the end and the optical fiber arranged inside is eliminated, and the PMD can be improved.

Next, the form which deepened the recessed part shape of resin 12a shown in FIG. 4 is shown in FIG.
The bundling portion 11b shown in FIG. 5 is formed such that the bottom portion 17b of the concave portion 16b is located inside the common tangent line S2b of the optical fiber 10. As compared with the resin 12a shown in FIG. 4, the resin 12b in which the concave portion 16b in which the position of the bottom portion 17b is deep is formed and is easily broken and peeled off, and its total amount is small. Therefore, the intermediate separation work can be easily performed, and PMD of the bundled optical fibers 10 can be further reduced.

  Furthermore, the bundling portion 11c shown in FIG. 6 has a form in which the ultraviolet curable resin (or adhesive) 12c does not cover the entire optical fibers 10 and joins the adjacent optical fibers 10 together. Here, as shown in FIG. 6, the thickness of the portion where the resin 12 c is provided is set so as not to exceed the outer diameter d of the optical fiber 10. That is, the thickness of the bundling portion 11 c is equal to or less than the outer diameter d of the optical fiber 10. The bundling portion 11c with T = d is substantially cut off in the thickness direction of the bundling portion 11c passing through the center of each optical fiber 10, so that each optical fiber 10 is connected to the bundling portion 11c. It is easy to separate in the width direction, and the intermediate separation property is better than the bundling portion in which the entire optical fiber 10 is covered with resin or adhesive.

  In addition, the bundling portion 11d shown in FIG. 7 has a so-called edge in which a resin 12d that joins adjacent optical fibers 10 is disposed so as to fill a part of a recess formed between adjacent optical fibers 10. Bond type. Since the amount of the resin 12d that joins the adjacent optical fibers 10 is the smallest in the bundling portion 11d, the influence of the resin 12d on the optical fiber 10 is very small.

The binding portion shown above was integrated by covering or joining each optical fiber 10 with an adhesive or an ultraviolet curable resin, but the optical fiber was bound using another article. Also good.
The bundling portion 11e shown in FIG. 8 is one in which the optical fibers 10 arranged in a planar shape are bonded and bonded between two films 18. In the film 18, an adhesive layer 20 is formed on one surface of a film base 19. When the optical fiber 10 is bound, the respective adhesive layers 20 are opposed to the optical fiber 10. Let them stick together.

  The material of the adhesive layer 20 provided on the film 18 is desirably a material that does not have strong adhesiveness in a room temperature environment. In this embodiment, an adhesive having thermoplasticity is used as a polyester material. That is, at the initial stage of manufacturing the binding portion 11e, the adhesive layer is only in contact with the optical fiber 10, and is not yet bonded. Therefore, even if the two films 18 are aligned along the outer periphery of each of the optical fibers 10 arranged, even if they are misaligned, the adhesive layer 20 does not adhere to any location at that time. Can be easily corrected. Then, after confirming that the film 18 is correctly positioned with respect to the optical fiber 10, it is preferable to heat and bond the film 18 with the film.

  The adhesive layer 20 desirably has flame retardancy, for example, bromine-based or chlorine-based flame retardants for organic systems, and metal hydroxide flame retardants or antimony-based flame retardants for inorganic systems. Auxiliaries can be added.

Further, as the material of the film base material 19, a material that can have a protective strength equivalent to that of a generally used optical fiber ribbon coated with an ultraviolet curable resin or the like is used.
The film base 19 is preferably made of a non-heat-shrinkable material that does not easily shrink due to heat, and a material that does not disturb the alignment state of the optical fibers due to the heat shrinkage of the film base 19 may be used. For example, a material having a heat shrinkage rate of 3% or less can be preferably used. Examples of the material of the film base 19 include polyethylene terephthalate (PET), polyimide (PI), polyphenylene sulfide (PPS), and the like.

  Furthermore, the film base material 19 is desirably a material having flame retardancy. For example, as with the adhesive layer 20, a brominated flame retardant, an antimony flame retardant aid, or the like can be added. Moreover, when polyimide or polyphenylene sulfide is used as the material of the film substrate 19, heat resistance and flame retardancy are good.

Next, another embodiment of the optical wiring component described above will be described. In addition, any form mentioned above can be employ | adopted for the shape of a binding part. Further, the length of the binding part and the separation part and the binding pitch may be set in the same manner as in the above embodiment.
The optical wiring component 21 shown in FIG. 9 has a twelve-core bundling portion 11, two six-core bundling portions 22, and four three-core bundling portions 23. In this optical wiring component 21, twelve optical fibers 10 bundled by the bundling portion 11 are branched into two at the bundling portion 22 and further branched into four at the bundling portion 23. With such a branched configuration, it is possible to appropriately connect with an optical component having a desired number of cores.

  Further, in the optical wiring component 24 shown in FIG. 10, the optical fibers 10 are arranged in parallel in the bundling portion 11, but appropriately intersect at a separation portion between the adjacent twelve core bundling portions 11 and 11. Are wired like so. Since the optical wiring component 24 is arranged in a different order through a separating portion that can easily cross the optical fibers 10, the bundling portion 11 maintains a planar arrangement. In other words, the bundling portion 11 can appropriately perform multi-core batch fusion connection. With such a wiring conversion type configuration, the arrangement order can be easily changed between devices connected to both ends of the optical wiring component as required.

  Further, the optical wiring component 25 shown in FIG. 11 has two optical fiber ribbons 26 in which a plurality of optical fibers (here, four) 10 are integrally taped so that all the optical fibers 10 are arranged in a plane. The binding portions 27 are intermittently formed in the longitudinal direction, and the binding portions 27 and the separation portions are alternately provided. With such a tape core type configuration, fusion can be performed at the separation portion in the case of simultaneous fusion connection with other optical fiber ribbons.

Further, the optical wiring component 28 shown in FIG. 12 is a combination of the characteristic components of the optical wiring components 21, 24, 25 shown in FIGS. In this composite type optical wiring component 28, the optical fiber 10 is appropriately bundled in the bundling portion 30 from the two optical fiber ribbons 26 through the separation portion, and further separated into the next separation portion. It is branched into two binding parts 29 via. In this optical wiring component 28, the two optical fiber ribbons 26 are each regarded as a bundled portion of the optical fiber 10.
As described above, the optical wiring component of the present invention can be easily wired by adapting to the requirements of various optical wiring forms by designing various forms in combination.

Next, the form of the optical wiring component to which the optical component is connected will be described.
In the optical wiring component 31 shown in FIG. 13, two optical fiber ribbons 26 are connected to the optical component 32. Following the optical fiber ribbon 26, the bundling portion 29 and the optical fiber 10 are respectively connected. Are formed alternately with the separated portions. The optical wiring component to which the optical component is connected as described above can be easily stored and installed easily while performing desired wiring when the optical component is installed in a housing such as an optical module.
The optical components used in the present invention are not particularly limited, but are multi-core optical components, such as multi-channel optical switches, splitters, couplers, arrayed waveguides called AWG (Arrowed Waveguide), and multi-channels. These variable optical attenuators can be preferably used.

  Also, the optical wiring component 33 shown in FIG. 14 is obtained by connecting the optical component 32 to the optical wiring component 28 shown in FIG.

  Further, in the optical wiring component 34 shown in FIG. 15, the optical component 35 and a plurality of (here, eight) single-core optical fibers 10 that are separation portions are connected, and subsequently, the bundling portion 28 and the separation portion. Are formed alternately. Further, the optical fiber 10 in the separating portion is connected to the single-core optical fiber connected to the single-core connector 36 by a single-core fusion connection to form a fusion portion 37.

Next, a preferred embodiment in which the above-described optical wiring component is accommodated in another optical wiring component or an optical fiber by being fused and connected will be described.
FIG. 16 shows a form in which optical fiber components are connected by multi-core batch fusion and the surplus length processing unit processes the surplus length.
First, as shown in FIG. 16, the two optical wiring components 1 are wound around the outer periphery of the extra length processing unit 39. The optical wiring component 1 used here has a binding pitch P for forming the binding portion 11 of 2πR / n based on the radius R of the surplus length processing portion 39, that is, the bending radius R of the optical wiring component 1 to be surplus length processed. (Π is a circumference ratio, n is a natural number, and here, n = 3). Here, the radius R of the surplus length processing unit may be determined in consideration of the minimum bending radius of the optical fiber to be surplus length processed. The minimum bend radius of the optical fiber to be used can range from 7.5 mm designed with a small mode field diameter to 30 mm, which is a normal single mode fiber. Therefore, considering the preferable range of the binding pitch P by applying the minimum R = 7.5 mm and the maximum R = 30 mm to the equation of P = 2πR / n, the range of P = 47.1 mm to 188.4 mm is Desired.
In this way, by setting an appropriate bundling pitch based on the bending radius of the optical wiring component in the surplus length processing unit, the same position every time the optical wiring component wound around the surplus length processing unit is drawn out once. A bundling part and a separation part can be arranged in the. That is, fusion splicing can always be performed at a desired position.

When the optical wiring component 1 is fused by the bundling portion 11, the coating of the optical fiber 10 is removed together with an adhesive, a resin, a film, or the like that binds the optical fiber 10 in the bundling portion 11, and glass Expose the fiber. Similarly, the multi-fiber batch fusion splicing is performed with the glass fiber of the other optical wiring component 1 whose coating has been removed using a fusion splicer. At that time, since the optical fibers 10 in the bundling portion 11 are arranged in a planar shape, and preferably arranged at an equal pitch, the optical axes can be easily aligned at the time of fusion splicing. Good workability for fusion splicing.
Further, the fusion spliced portion is covered and protected by the reinforcing tube 38.

Further, when the optical wiring component 1 is accommodated in the optical module, the arrangement direction of the optical fibers 10 is made different between the extra length processing unit 39 and other portions.
In the surplus length processing unit 39, the optical fibers 10 are arranged so as to be substantially perpendicular to the mounting surface of the module tray so that the radii of curvature of the optical fibers 10 wound around the surplus length processing unit 39 are equal. . In particular, since the preferred bending direction of the bundling portion 11 is a direction perpendicular to the arrangement direction of the optical fibers 10, when the bundling portion 11 is wound around the surplus length processing portion 39, the surplus length processing portion 39 is arranged in this preferred bending direction. Wrap around.
On the other hand, in the places other than the surplus length processing section, the optical fibers 10 are usually arranged so as to be substantially parallel to the mounting surface of the module tray.
By performing such an orientation of the arrangement, the optical wiring component 1 is twisted in the vicinity of the surplus length processing section 39, but a separating section is disposed at this twisted place to release the twisting load. And even better.

An example of a preferable accommodation form of the optical wiring component in the optical module using the wiring form and the extra length processing form described with reference to FIG. 16 is shown below.
FIG. 17 shows an optical wiring component housed in the optical module.
As shown in FIG. 17, one end side of the optical wiring component 1 is connected to the optical component 41, and the extra length portion is wound around the extra length processing unit 39 and processed, and is accommodated in the optical module tray 40. The other end side is fusion-bonded to the other optical wiring component 1a. The fusion here is a multi-core batch fusion connection in the binding portion 11 of each other. Further, the optical fiber tape core wire led out from the optical component 41 is connected to the optical fiber tape core wire 10a connected to the connector 43 on the outside of the optical module tray 40 in a multi-fiber batch fusion connection, and the reinforcing tube 38 Protected. The other optical wiring component 1 a is also subjected to extra length processing by the extra length processing unit 39 and connected to the optical component 42. Similar to the optical component 41, the optical component 42 is connected to an external optical fiber tape core by multi-fiber batch fusion via an optical fiber ribbon.

  FIG. 18 shows a configuration in which the optical wiring component 1 and the optical wiring component 1a are single-core fusion-bonded in the configuration shown in FIG. Compared with FIG. 17, the optical wiring components 1, 1 a are each housed in the optical module 40 by shifting the arrangement by a half of the binding pitch P (see FIG. 2). The optical fibers 10 are fused and connected to each other, and a single-core fused connection portion 44 is formed.

FIG. 19 shows another form of the optical wiring component housed in the optical module.
As shown in FIG. 19, in the optical wiring component 21, one end side branched into two is connected to another optical component 46, and the extra length portion is wound around the extra length processing unit 39 and processed. 40. The other end side is fusion-bonded to the other optical wiring component 21a. The fusion here is a multi-core batch fusion connection in the binding portion 11 of each other. In addition, the optical fiber tape core wire led out from the optical component 46 is connected to the optical fiber tape core wire 10 a connected to the connector 47 outside the optical module tray 40 by multi-fiber batch fusion, and is connected by the reinforcing tube 38. Protected. The other optical wiring component 21 a is also subjected to extra length processing by the extra length processing unit 39, and the bundling unit 11 branched into two is connected to one optical component 45.

  FIG. 20 shows a configuration in which the optical wiring component 21 and the optical wiring component 21a are single-core fusion-bonded in the form shown in FIG. Compared with FIG. 19, the optical wiring components 21 and 21 a are each housed in the optical module 40 with the arrangement shifted by a half of the binding pitch P (see FIG. 2). The optical fibers 10 are fused to each other, and a single-core fusion splicing portion 44 is formed.

FIG. 21 shows another form of the optical wiring component housed in the optical module.
FIG. 21 shows a wiring configuration substantially similar to that shown in FIG. 19, but the bundling portion 11 is wound around the surplus length processing portion 39. A portion twisted when the bundling portion 11 is subjected to extra length processing is a separation portion, and the influence of the twisting load on the optical fiber is reduced.
In addition, the optical fiber tape core wire led out from the optical component 46 is separated from the single fiber core, and the single fiber optical fiber connected to the single fiber connector 36 on the outside of the optical module tray is fused and connected. Single-core fusion splicing portions 37 are formed respectively.

  Further, FIG. 22 shows a configuration in which the optical wiring component 21 and the optical wiring component 21a are connected by single-core fusion in the same manner as in FIG.

It is a perspective view which shows one Embodiment of the optical wiring component which concerns on this invention. FIG. 2 is a schematic plan view of the optical wiring component shown in FIG. 1. It is sectional drawing in the binding part of the optical wiring component shown in FIG. It is sectional drawing which shows another form of a binding part. It is sectional drawing which shows another form of a binding part. It is sectional drawing which shows another form of a binding part. It is sectional drawing which shows another form of a binding part. It is sectional drawing which shows another form of a binding part. It is a typical top view which shows a branch type optical wiring component. It is a schematic plan view showing an array conversion type optical wiring component. It is a typical top view which shows a tape core type optical wiring component. It is a typical top view which shows a composite type optical wiring component. It is a typical top view which shows one Embodiment of the optical wiring component with which the optical component was connected. FIG. 3 is a schematic plan view showing an embodiment of a branch / complex optical wiring component to which optical components are connected. It is a typical top view which shows one Embodiment of the optical wiring component with which the optical component and the single core connector were connected. It is a typical top view which shows the form which optical fiber components were connected by multi-core lump splicing, and the surplus length process part processed the surplus length. It is a typical top view which shows one Embodiment of the optical wiring component accommodated in the optical module. It is a typical top view which shows another form of the optical wiring component accommodated in the optical module. It is a typical top view which shows another form of the optical wiring component accommodated in the optical module. It is a typical top view which shows another form of the optical wiring component accommodated in the optical module. It is a typical top view which shows another form of the optical wiring component accommodated in the optical module. It is a typical top view which shows another form of the optical wiring component accommodated in the optical module.

Explanation of symbols

1, 24, 25, 28, 31, 33, 34 Optical wiring component 10 Optical fiber 11 Bundling portion 12 Adhesive (or ultraviolet curable resin)
13 Glass fiber 14 Protective coating layer 18 Film 39 Extra length processing unit 40 Optical module tray (optical module)

Claims (14)

A plurality of optical fibers or a plurality of optical fiber ribbons having a plurality of optical fibers, in the longitudinal direction thereof, are alternately provided with a bundled binding portion and a non-bundled separation portion, and the binding portion Then, an optical wiring component in which the optical fibers are arranged in a planar shape
When the optical wiring component is connected to another optical wiring component or an optical fiber and accommodated in the optical module, the optical wiring component is subjected to extra length processing in the extra length processing unit in the optical module. An optical wiring component, wherein the binding pitch at which the binding portions are formed is 2πR / n (where π is a circumferential ratio and n is a natural number) where R is a bending radius . In the optical wiring component according to claim 1,
In the bundling portion, the optical fibers are arranged side by side at an equal pitch. In the optical wiring component according to claim 1 or 2,
In the binding part, the optical fiber or the optical fiber ribbon is integrated with the optical wiring component. In the optical wiring component according to claim 3,
In the binding unit, the optical fiber or the optical fiber ribbon is covered with an adhesive or an ultraviolet curable resin, and the adhesive or the ultraviolet curable resin is adjacent to the optical fiber or the optical fiber. An optical wiring component, wherein a concave portion corresponding to a recess between the tape core wires is formed. In the optical wiring component according to claim 3,
In the binding section, the optical fiber or the optical fiber ribbon is bonded with an adhesive or an ultraviolet curable resin, and the thickness of the portion where the adhesive or the ultraviolet curable resin is provided is the optical fiber. An optical wiring component characterized by not exceeding the outer diameter of the fiber or the thickness of the optical fiber ribbon. In the optical wiring component according to claim 1 or 2,
In the binding part, the optical fiber or the optical fiber ribbon is bundled by adhesion to a film. In the optical wiring component according to any one of claims 1 to 6,
The optical wiring component according to claim 1, wherein a length per one of the bundling portions is 25 mm or more. In the optical wiring component according to any one of claims 1 to 7,
An optical wiring component, wherein a length of each separation portion is three times or more than a width in which the optical fibers in the binding portion are arranged. In the optical wiring component according to any one of claims 1 to 8,
The optical wiring component, wherein the arrangement order of the optical fibers between the adjacent bundling portions is made different via the separating portion. A plurality of optical fibers or a plurality of optical fiber ribbons having a plurality of optical fibers, in the longitudinal direction thereof, are alternately provided with a bundled binding portion and a non-bundled separation portion, and the binding portion Then, an optical wiring component in which the optical fibers are arranged in a plane, and
Other optical wiring components or optical fibers connected to the optical wiring components were accommodated,
An optical module having an extra length processing unit,
When the bending radius of the optical wiring component to be processed by the extra length processing unit is R, the binding pitch at which the binding unit of the optical wiring component is formed is 2πR / n (π is the circumference ratio) , N is a natural number)
An optical module of an optical wiring component, wherein the arrangement direction of the optical fibers is different between the extra length processing part and the other part in the optical module. The optical fibers of the optical wiring component are arranged so as to be substantially perpendicular to the mounting surface of the optical module in the extra length processing section, and to be substantially parallel to the mounting surface of the optical module in other portions. The optical module of the optical wiring component according to claim 10, wherein the optical module is arranged. The optical module of the optical wiring component according to claim 10 or 11, wherein the optical fiber of the optical wiring component is twisted at a separation portion in the optical module. The optical module according to any one of claims 10 to 12, wherein the connection is performed in a multi-core batch manner in the bundling portion . An optical module of the optical wiring component according from請Motomeko 10 in any one of 12, wherein the connection is an optical wiring component, characterized in that in the separation section of the work was performed for each single core Light module .

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