TW202331325A - Optical fiber assembly, optical fiber cable, and method for manufacturing optical fiber assembly - Google Patents

Optical fiber assembly, optical fiber cable, and method for manufacturing optical fiber assembly Download PDF

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TW202331325A
TW202331325A TW111146703A TW111146703A TW202331325A TW 202331325 A TW202331325 A TW 202331325A TW 111146703 A TW111146703 A TW 111146703A TW 111146703 A TW111146703 A TW 111146703A TW 202331325 A TW202331325 A TW 202331325A
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optical fiber
aforementioned
scalar
fiber assembly
core wires
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TW111146703A
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Chinese (zh)
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大野正敏
植草拓哉
滝口耕司
淺村尚人
佐藤大典
鯰江彰
大里健
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日商藤倉股份有限公司
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Mechanical Coupling Of Light Guides (AREA)

Abstract

This optical fiber assembly comprises: a plurality of optical fibers; and a plurality of intermittently fixing tape core wires including a plurality of fixing parts for intermittently fixing the optical fibers in the longitudinal direction. The intermittently fixing tape core wires are periodically twisted. In a cross-section perpendicular to the longitudinal direction and in one of the intermittently fixing tape core wires, when the middle point and the center of gravity between two of the optical fibers located at both ends are respectively denoted by M and G, a vector being defined by the middle point M as the start point and the center of gravity G as the end point is denoted by MG, and the magnitude of the vector MG is defined as the scalar amount LT, each periodical twisting includes at least one set of the intermittently fixing tape core wires, in which the magnitude relationship in the scalar amount LT switches.

Description

光纖集合體、光纖電纜、及光纖集合體的製造方法Optical fiber assembly, optical fiber cable, and method for manufacturing optical fiber assembly

本發明是有關於一種光纖集合體、光纖電纜、及光纖集合體的製造方法。 本發明是依據已於2021年12月27日於日本提出申請的特願2021-212150號主張優先權,並在此引用其內容。 The invention relates to an optical fiber assembly, an optical fiber cable, and a method for manufacturing the optical fiber assembly. This application claims priority based on Japanese Patent Application No. 2021-212150 filed in Japan on December 27, 2021, the contents of which are incorporated herein.

在專利文獻1中,揭示有一種光纖電纜,前述光纖電纜具有被外被件一併被覆的複數個光纖單元。在各光纖單元中包含有複數個間歇固定帶芯線。 先前技術文獻 專利文獻 Patent Document 1 discloses an optical fiber cable including a plurality of optical fiber units collectively covered with an outer covering. Each optical fiber unit includes a plurality of intermittent fixed ribbon cores. prior art literature patent documents

專利文獻1:日本專利特開2014-16530號公報Patent Document 1: Japanese Patent Laid-Open No. 2014-16530

發明欲解決之課題The problem to be solved by the invention

但是,例如在專利文獻1所示的光纖電纜中,當產生彎曲、或在低溫環境下產生外被件的收縮之情況下,會有應變集中在特定的間歇固定帶芯線的情況。像這樣的應變集中會有帶來光纖電纜(光纖集合體)的最大傳輸損失的增大之情況。However, for example, in the optical fiber cable disclosed in Patent Document 1, when bending occurs or the sheath shrinks in a low-temperature environment, strain may concentrate on specific intermittently fixed tape cores. Such concentration of strain may increase the maximum transmission loss of the optical fiber cable (optical fiber assembly).

本發明是考慮到像這樣的情形而完成,目的在於提供一種可以抑制最大傳輸損失的增大之光纖集合體、光纖電纜、及光纖集合體的製造方法。 用以解決課題之手段 The present invention was made in consideration of such circumstances, and an object of the present invention is to provide an optical fiber assembly, an optical fiber cable, and a method for manufacturing an optical fiber assembly capable of suppressing an increase in the maximum transmission loss. means to solve problems

為了解決上述課題,本發明的一態樣之光纖集合體具備複數個間歇固定帶芯線,前述複數個間歇固定帶芯線包含複數個光纖以及在長邊方向上間歇地固定前述複數個光纖的複數個固定部,前述複數個間歇固定帶芯線是週期性地撚合,在垂直於前述長邊方向的剖面中,將前述複數個間歇固定帶芯線當中的1個間歇固定帶芯線中之位於兩端的2個前述光纖的中點設為M,將重心設為G,將以前述中點M為起點且以前述重心G為終點的向量設為MG,將前述向量MG的大小設為純量LT時,在前述撚合的週期的每一個中,存在有前述純量LT的大小關係對調的至少一組前述間歇固定帶芯線。In order to solve the above-mentioned problems, an optical fiber assembly according to an aspect of the present invention includes a plurality of intermittently fixed tape cores, the plurality of intermittently fixed tape cores include a plurality of optical fibers and a plurality of optical fibers that intermittently fix the plurality of optical fibers in the longitudinal direction. In the fixing part, the plurality of intermittent fixed belt core wires are periodically twisted, and in the section perpendicular to the aforementioned long side direction, one of the aforementioned plurality of intermittent fixed belt core wires is located at two ends of the intermittent fixed belt core wires. The midpoint of the above-mentioned optical fiber is set as M, the center of gravity is set as G, the vector with the aforementioned midpoint M as the starting point and the aforementioned center of gravity G as the end point is set as MG, and when the magnitude of the aforementioned vector MG is set as the scalar LT, In each of the twisting cycles, at least one set of the intermittent fixed tape core wires in which the magnitude relationship of the scalar LT is reversed exists.

又,本發明的一態樣之光纖集合體的製造方法是以在撚合的週期的每一個中,存在有前述純量LT的大小關係對調的至少一組前述間歇固定帶芯線之方式,將前述複數個間歇固定帶芯線週期性地撚合。 發明效果 In addition, the manufacturing method of an optical fiber assembly according to an aspect of the present invention is to include at least one set of intermittently fixed tape cores in which the magnitude relationship of the scalar LT is reversed in each of the twisting cycles. The plurality of intermittently fixed core wires are periodically twisted. Invention effect

根據本發明的上述態樣,可以提供一種能夠抑制最大傳輸損耗的增大之光纖集合體、光纖電纜、及光纖集合體的製造方法。According to the above aspects of the present invention, it is possible to provide an optical fiber assembly, an optical fiber cable, and a method of manufacturing an optical fiber assembly capable of suppressing an increase in the maximum transmission loss.

用以實施發明之形態form for carrying out the invention

以下,依據圖式來說明本發明的實施形態之光纖集合體1及光纖電纜100。 如圖1所示,本實施形態之光纖電纜100具備包含複數個光纖單元U的光纖集合體1。如圖2所示,各光纖單元U具有複數個間歇固定帶芯線10。換言之,複數個間歇固定帶芯線10是構成複數個光纖單元U。又,各間歇固定帶芯線10包含複數個光纖11。換言之,複數個光纖11構成複數個間歇固定帶芯線10。各光纖11的外徑例如為250μm。但是,光纖11的外徑亦可為200μm,亦可為其他值。 Hereinafter, an optical fiber assembly 1 and an optical fiber cable 100 according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1 , an optical fiber cable 100 of the present embodiment includes an optical fiber assembly 1 including a plurality of optical fiber units U. As shown in FIG. 2 , each optical fiber unit U has a plurality of intermittent fixed tape core wires 10 . In other words, a plurality of intermittent fixed tape core wires 10 constitute a plurality of optical fiber units U. In addition, each intermittent fixed tape core wire 10 includes a plurality of optical fibers 11 . In other words, a plurality of optical fibers 11 constitute a plurality of intermittent fixed tape core wires 10 . The outer diameter of each optical fiber 11 is, for example, 250 μm. However, the outer diameter of the optical fiber 11 may be 200 μm or other values.

(方向定義) 在此,在本實施形態中,將光纖集合體1(光纖電纜100)的長邊方向簡稱為長邊方向Z。長邊方向Z也是和光纖集合體1(光纖電纜100)的中心軸線O平行的方向。將沿著長邊方向Z的一個方向稱為+Z的方向或前方。將和+Z的方向相反的方向稱為-Z的方向或後方。將垂直於長邊方向Z的剖面稱為橫剖面。將從長邊方向Z來觀看橫剖面稱為橫剖面視角。將正交於光纖集合體1(光纖電纜100)的中心軸線O的方向稱為徑方向。沿著徑方向,將接近中心軸線O的方向稱為徑方向內側,將遠離中心軸線O的方向稱為徑方向外側。從長邊方向Z來觀看,將繞著中心軸線O環繞的方向稱為圓周方向。 (direction definition) Here, in this embodiment, the longitudinal direction of the optical fiber assembly 1 (optical fiber cable 100 ) is simply referred to as the longitudinal direction Z. The longitudinal direction Z is also a direction parallel to the central axis O of the optical fiber assembly 1 (optical fiber cable 100 ). One direction along the longitudinal direction Z is referred to as the direction of +Z or the front. The direction opposite to the +Z direction is referred to as the -Z direction or the rear. A section perpendicular to the longitudinal direction Z is called a transverse section. Viewing the cross-section from the longitudinal direction Z is called a cross-sectional viewing angle. A direction perpendicular to the central axis O of the optical fiber assembly 1 (optical fiber cable 100 ) is called a radial direction. Along the radial direction, the direction closer to the central axis O is referred to as the radially inner side, and the direction farther from the central axis O is referred to as the radially outer side. Seen from the longitudinal direction Z, the direction around the central axis O is referred to as the circumferential direction.

如圖1所示,本實施形態之光纖電纜100是所謂的無槽式(slotless)的光纖。亦即,本實施形態之光纖電纜100不具有形成容置光纖11(間歇固定帶芯線10)的溝(槽溝)的槽桿。但是,光纖電纜100亦可為具有槽桿的槽型光纖。在此情況下,本實施形態之光纖集合體1亦可容置於光纖電纜100的槽溝。As shown in FIG. 1 , the optical fiber cable 100 of this embodiment is a so-called slotless optical fiber. That is, the optical fiber cable 100 of this embodiment does not have a groove bar forming a groove (groove) for accommodating the optical fiber 11 (intermittent fixed tape core wire 10). However, the fiber optic cable 100 can also be a grooved fiber with grooved rods. In this case, the optical fiber assembly 1 of this embodiment can also be accommodated in the groove of the optical fiber cable 100 .

如圖1所示,本實施形態之光纖電纜100具備:上述光纖集合體1、覆蓋光纖集合體1的捲壓件120、及隔著捲壓件120來被覆並容置光纖集合體1的外被件110。亦即,光纖集合體1可以視為在光纖電纜100當中除了外被件110及捲壓件120等的部分。又,有時會將光纖集合體1及捲壓件120統稱為芯材。As shown in FIG. 1 , the optical fiber cable 100 of this embodiment includes: the above-mentioned optical fiber assembly 1 , a crimping member 120 covering the optical fiber assembly 1 , and an outer covering and accommodating the optical fiber assembly 1 through the crimping member 120 . Quilt 110. That is, the optical fiber assembly 1 can be regarded as a part of the optical fiber cable 100 except for the sheath 110 and the crimping member 120 . In addition, the optical fiber assembly 1 and crimp 120 may be collectively referred to as a core material.

捲壓件120是帶狀的構件,且捆束了複數個光纖單元U。只要可以捆束光纖單元U,捲壓件120的種類並沒有特別限定,亦可採用例如不織布或聚酯膠帶等來作為捲壓件120。捲壓件120亦可具有吸水性。捲壓件120亦可對光纖集合體1例如縱向捲繞或橫向捲繞。 例如,在捲壓件120為在長邊方向Z上延伸的膠帶的情況下,捲壓件120亦可形成為包覆光纖單元U的圓筒狀。在此情況下,捲壓件120的圓周方向上的兩端部亦可互相重疊而形成包覆部。又,捲壓件120亦可不是帶狀,而是包覆光纖單元U的管件形成體。由於在長邊方向Z上會藉由捲壓件120來包覆光纖單元U,因此可以保護光纖11。 另外,在長邊方向Z上亦可有未藉由捲壓件120包覆光纖11的位置處,另外,光纖電纜100亦可不具有捲壓件120。 The crimp 120 is a tape-shaped member, and bundles a plurality of optical fiber units U. The type of the crimping member 120 is not particularly limited as long as the optical fiber units U can be bundled, and the crimping member 120 may also be non-woven fabric or polyester tape, for example. The crimping member 120 can also have water absorption. The crimping member 120 can also wind the optical fiber assembly 1 longitudinally or transversely, for example. For example, when the crimping member 120 is an adhesive tape extending in the longitudinal direction Z, the crimping member 120 may be formed in a cylindrical shape covering the optical fiber unit U. In this case, both ends of the crimping member 120 in the circumferential direction may overlap each other to form a covering portion. In addition, the crimping member 120 may not be a ribbon, but may be a tube forming body covering the optical fiber unit U. Since the optical fiber unit U is covered by the crimping member 120 in the longitudinal direction Z, the optical fiber 11 can be protected. In addition, there may be a position in the longitudinal direction Z where the optical fiber 11 is not covered by the crimping member 120 , and the optical fiber cable 100 may not have the crimping member 120 .

作為外被件110的材質,可以使用聚乙烯(PE)、聚丙烯(PP)、乙烯丙烯酸乙酯共聚物(EEA)、乙烯乙酸乙烯酯共聚物(EVA)、乙烯丙烯共聚物(EP)等之聚烯烴(PO)樹脂、聚氯乙烯(PVC)等。又,亦可使用上述樹脂的混合物(合金、混合物)來形成外被件110。又,因應於目的,亦可對外被件110添加各種添加劑。作為添加劑的例子,可列舉阻燃劑、著色劑、劣化防止劑、無機填料等。又,外被件110亦可具有2層構造或其他的複層構造。例如,亦可在圖示的例子中之外被件110(第1外被件)的外側設置覆蓋外被件110的保護層,並且在該保護層的外側設置覆蓋該保護層的第2外被件。保護層亦可為例如金屬製,亦可為纖維強化塑膠(FRP)製。或者,外被件110亦可不具有保護層,而僅藉由複數層的外被件來形成。As the material of the outer covering 110, polyethylene (PE), polypropylene (PP), ethylene ethyl acrylate copolymer (EEA), ethylene vinyl acetate copolymer (EVA), ethylene propylene copolymer (EP), etc. can be used. Polyolefin (PO) resin, polyvinyl chloride (PVC), etc. In addition, a mixture (alloy, mixture) of the above-mentioned resins may be used to form the outer covering 110 . Also, various additives may be added to the outer covering 110 according to the purpose. As an example of an additive, a flame retardant, a coloring agent, an anti-deterioration agent, an inorganic filler, etc. are mentioned. Also, the outer covering 110 may have a two-layer structure or other multi-layer structures. For example, a protective layer covering the outer covering 110 may also be provided outside the outer covering 110 (the first outer covering) in the illustrated example, and a second outer covering covering the protective layer may be provided outside the protective layer. Quilt pieces. The protective layer can also be made of, for example, metal or fiber reinforced plastic (FRP). Alternatively, the outer covering 110 may not have a protective layer, but only be formed by a plurality of outer coverings.

本實施形態之外被件110的外形,除了後述的突起110a之外,在橫剖面視角下為大致圓形狀。但是,外被件110的形狀可以適當變更。如圖1所示,在本實施形態之外被件110中配置有複數個(在圖示的例子中為4個)抗張力體130及一對撕裂繩140。The outer shape of the quilt 110 in this embodiment is substantially circular when viewed in cross section, except for the protrusion 110a described later. However, the shape of the outer covering material 110 may be appropriately changed. As shown in FIG. 1 , a plurality of (four in the illustrated example) tensile members 130 and a pair of tear cords 140 are arranged in the quilt 110 in addition to the present embodiment.

抗張力體130是長邊方向Z上的彈簧常數或拉伸強度比外被件110更高的構件。可以使用例如金屬線(鋼線等)、捆束了金屬線的材料、玻璃纖維、或捆束了玻璃纖維的材料等,來作為抗張力體130的材質。或者,亦可使用纖維強化塑膠(FRP)等來作為抗張力體130。當對光纖集合體1(光纖電纜100)施加有沿著長邊方向Z的張力的情況下,抗張力體130具有承受該張力來保護光纖11的作用。 複數個抗張力體130是配置在外被件110。本實施形態之複數個抗張力體130是配置成在徑方向上將光纖集合體1夾於其間。但是,複數個抗張力體130亦可等向性地配置在外被件110,以包圍光纖集合體1(芯材)。另外,抗張力體130亦可不埋設於外被件中。例如,抗張力體130亦可包含在光纖集合體1的中心或芯材中。或者,根據光纖電纜100的用途,光纖電纜100亦可不具有抗張力體130。 The tensile body 130 is a member having a spring constant or a higher tensile strength in the longitudinal direction Z than the outer covering 110 . As the material of the tensile body 130 , for example, metal wires (steel wires, etc.), materials with bundled metal wires, glass fibers, or materials with bundled glass fibers, etc. can be used. Alternatively, fiber reinforced plastic (FRP) or the like may also be used as the tensile body 130 . When tension is applied to the optical fiber assembly 1 (optical fiber cable 100 ) along the longitudinal direction Z, the tension-resistant body 130 has the function of protecting the optical fibers 11 by receiving the tension. A plurality of tensile members 130 are arranged on the outer covering 110 . The plurality of tensile members 130 in this embodiment are disposed so as to sandwich the optical fiber assembly 1 therebetween in the radial direction. However, a plurality of tensile members 130 may also be isotropically arranged on the jacket 110 to surround the optical fiber assembly 1 (core material). In addition, the tensile body 130 may not be embedded in the outer covering. For example, the tensile body 130 can also be included in the center or core material of the optical fiber assembly 1 . Alternatively, depending on the application of the optical fiber cable 100 , the optical fiber cable 100 may not have the tensile body 130 .

撕裂繩140是使用來撕開外被件110的構件。可以使用例如合成纖維(聚酯等)的線、聚丙烯(PP)、或尼龍製的圓柱狀的桿體等,來作為撕裂繩140的材質。 撕裂繩140是配置在外被件110。另外,在橫剖面視角下,撕裂繩140亦可配置成整個埋設在外被件110內,亦可配置成一部分從外被件110的外周面或內周面露出。本實施形態之一對撕裂繩140是配置成在徑方向上將光纖集合體1夾於之間。又,在圓周方向上,各抗張力體130的位置與各撕裂繩140的位置是互相錯開的。另外,撕裂繩140的數量亦可為1個,亦可為3個以上。又,撕裂繩140亦可不埋設於外被件110。例如,撕裂繩140亦可縱向附加在光纖集合體1。或者,光纖電纜100亦可不具有撕裂繩140。 The tear cord 140 is a member used to tear the outer jacket 110 . As the material of the rip cord 140 , for example, a thread of synthetic fiber (such as polyester), polypropylene (PP), or a cylindrical rod made of nylon can be used. The tear cord 140 is disposed on the outer jacket 110 . In addition, from a cross-sectional perspective, the tearing cord 140 can also be configured to be completely embedded in the outer covering member 110 , or be configured to be partially exposed from the outer peripheral surface or inner peripheral surface of the outer covering member 110 . One of the pairs of rip cords 140 in this embodiment is disposed so as to sandwich the optical fiber assembly 1 in the radial direction. Moreover, in the circumferential direction, the positions of the tension-resistant bodies 130 and the tearing cords 140 are staggered from each other. In addition, the number of tear cords 140 may be one, or three or more. Also, the tear cord 140 may not be embedded in the outer covering 110 . For example, the rip cord 140 can also be attached longitudinally to the optical fiber assembly 1 . Alternatively, the fiber optic cable 100 may not have the rip cord 140 .

在本實施形態之外被件110中,設置有從外被件110的外周面朝向徑方向外側突出的一對突起110a。圓周方向上的突起110a的位置與撕裂繩140的位置是互相對應。突起110a具有讓使用者容易從光纖電纜100的外部辨識撕裂繩140的位置之標記的作用。另外,外被件110亦可不具有突起110a。在此情況下,亦可用對外被件110的線狀的著色來代替突起110a。但是,外被件110亦可不具有突起110a,且不對外被件110施行著色。In the outer covering material 110 of this embodiment, a pair of protrusions 110a protruding radially outward from the outer peripheral surface of the outer covering material 110 are provided. The positions of the protrusions 110a in the circumferential direction and the positions of the tear cords 140 correspond to each other. The protrusion 110 a serves as a mark for the user to easily identify the position of the tear cord 140 from the outside of the optical fiber cable 100 . In addition, the outer cover 110 may not have the protrusion 110a. In this case, the linear coloring of the outer covering material 110 may be used instead of the protrusion 110a. However, the outer covering 110 may not have the protrusion 110a, and the outer covering 110 may not be colored.

如上述,光纖集合體1具有複數個(在圖1所示的例子中為12個)光纖單元U。如圖1所示,包含本實施形態之複數個光纖單元U的光纖集合體1具有2層構造。亦即,複數個光纖單元U包含複數個(在圖示的例子中為9個)外層單元Uout以及複數個(在圖示的例子中為3個)內層單元Uin。各外層單元Uout是位於光纖集合體1的外周。複數個內層單元Uin是被複數個外層單元Uout從徑方向外側包圍。亦即,複數個內層單元Uin在橫剖面視角下是位於光纖集合體1的中心部。但是,內層單元Uin的數量及外層單元Uout的數量可以適當變更。又,光纖集合體1亦可不具有2層構造。As described above, the optical fiber assembly 1 has a plurality of (twelve in the example shown in FIG. 1 ) optical fiber units U. As shown in FIG. 1 , an optical fiber assembly 1 including a plurality of optical fiber units U of this embodiment has a two-layer structure. That is, the plurality of optical fiber units U includes a plurality (nine in the illustrated example) of outer units Uout and a plurality (three in the illustrated example) of inner units Uin. Each outer layer unit Uout is located on the outer periphery of the optical fiber assembly 1 . The plurality of inner-layer units Uin are surrounded by the plurality of outer-layer units Uout from the outside in the radial direction. That is to say, the plurality of inner layer units Uin are located at the center of the optical fiber assembly 1 in the cross-sectional view. However, the number of inner units Uin and the number of outer units Uout can be changed appropriately. In addition, the optical fiber assembly 1 does not need to have a two-layer structure.

如圖2所示,本實施形態之光纖單元U具備上述複數個間歇固定帶芯線10、及將複數個間歇固定帶芯線10捆束的束材20。1個光纖單元U所包含的間歇固定帶芯線10的數量只要是2個以上即可,亦可為例如6個等。As shown in FIG. 2 , the optical fiber unit U of this embodiment includes the above-mentioned plurality of intermittent fixed tape core wires 10 and a bundle material 20 for bundling the plurality of intermittent fixed tape core wires 10. The intermittent fixed tape included in one optical fiber unit U The number of core wires 10 should just be 2 or more, and may be 6 etc., for example.

束材20是可以將複數個間歇固定帶芯線10捆束的構件。可以採用例如線狀、繩狀、或帶狀的構件等來作為束材20。本實施形態之間歇固定帶芯線10是被束材20捲繞而捆束。但是,束材20捆束間歇固定帶芯線10的構成並不限定於圖示的例子。例如,束材20亦可對間歇固定帶芯線10螺旋狀地捲繞。或者,光纖單元U亦可不具有束材20。在此情況下,例如,亦可在光纖單元U中將複數個間歇固定帶芯線10撚合,藉此來捆束間歇固定帶芯線10。The bundle material 20 is a member capable of bundling a plurality of intermittent fixed tape core wires 10 . As the bundle material 20 , for example, a wire-shaped, rope-shaped, or belt-shaped member can be used. In this embodiment, the intermittent fixed tape core wires 10 are wound and bundled by a bundle material 20 . However, the configuration in which the bundle material 20 bundles the intermittently fixed tape core wires 10 is not limited to the illustrated example. For example, the bundle material 20 may be wound helically around the intermittent fixed tape core wire 10 . Alternatively, the optical fiber unit U may not have the bundle material 20 . In this case, for example, in the optical fiber unit U, the intermittent fixed tape core wires 10 may be bundled by twisting a plurality of intermittent fixed tape core wires 10 .

另外,光纖集合體1亦可不具有光纖單元U。換言之,複數個間歇固定帶芯線10亦可不構成光纖單元U。亦即,光纖集合體1亦可具有捲壓件120或外被件110直接覆蓋間歇固定帶芯線10的構造。 又,在圖1所示的例子中,內層單元Uin是形成為扇形,外層單元Uout是形成為四角形。不限定於圖示的例子,光纖單元U的剖面形狀亦可形成為圓形、橢圓形、或多角形。又,光纖11即使是已被束材20捆束的狀態,也會一邊使束材20變形一邊在外被件110的內部中適當地移動至空著的空間。因此,例如如圖5所示,光纖單元U的剖面形狀亦可縐彎。 In addition, the optical fiber assembly 1 may not have the optical fiber unit U. In other words, the plurality of intermittent fixed tape core wires 10 may not constitute the optical fiber unit U. That is, the optical fiber assembly 1 may also have a structure in which the crimping member 120 or the sheathing member 110 directly covers the intermittent fixed tape core wire 10 . Also, in the example shown in FIG. 1, the inner unit Uin is formed in a fan shape, and the outer unit Uout is formed in a quadrangular shape. Not limited to the illustrated example, the cross-sectional shape of the optical fiber unit U may be circular, elliptical, or polygonal. In addition, even when the optical fibers 11 are bundled by the bundle material 20 , they appropriately move to an empty space inside the sheath material 110 while deforming the bundle material 20 . Therefore, for example, as shown in FIG. 5 , the cross-sectional shape of the optical fiber unit U can also be bent.

如圖3所示,各間歇固定帶芯線10包含複數個(在圖示的例子中為12個)光纖11及複數個固定部12。各光纖11具有芯材及包覆材。在包覆材的外周設置有例如樹脂等被覆層。在構成光纖集合體1之前的狀態下,間歇固定帶芯線10中的複數個光纖11是排列成一列。藉此,間歇固定帶芯線10具有帶狀的形狀。以下,為了較容易說明,有時會將光纖11在間歇固定帶芯線10中排列的方向稱為帶寬度方向W。As shown in FIG. 3 , each intermittent fixed tape core wire 10 includes a plurality of (twelve in the illustrated example) optical fibers 11 and a plurality of fixing parts 12 . Each optical fiber 11 has a core material and a cladding material. A covering layer such as resin is provided on the outer periphery of the covering material. In the state before the optical fiber assembly 1 is formed, the plurality of optical fibers 11 in the intermittently fixed tape core wire 10 are arranged in a row. Thereby, the intermittently fixed tape core wire 10 has a tape-like shape. Hereinafter, for easier description, the direction in which the optical fibers 11 are arranged in the intermittently fixed tape core wire 10 may be referred to as the tape width direction W.

各固定部12是將帶寬度方向W上相鄰的2個光纖11互相固定。在相鄰的2個光纖11彼此之間亦可設置有間隙。在此情況下,複數個固定部12是在長邊方向Z上間歇地配置在該間隙中。或者,相鄰的2個光纖11彼此之間亦可沒有間隙。又,2個光纖11亦可在長邊方向Z上被連續地固定而構成光纖組,複數個光纖組被複數個固定部12間歇地固定。 如圖3所示,複數個固定部12是在長邊方向Z及帶寬度方向W上以二維的方式間歇地配置。另外,固定部12的配置並不限定於圖3的例子,而可以適當變更。又,固定部12的配置型樣在長邊方向Z或帶寬度方向W上不是固定的型樣亦可。固定部12的配置型樣在不同的間歇固定帶芯線10之間不是固定的型樣亦可。亦可採用例如UV硬化型樹脂來作為固定部12的材質。但是,只要可以固定相鄰的光纖,固定部12的材質並無特別限定,可以適當變更。 Each fixing portion 12 fixes two adjacent optical fibers 11 in the tape width direction W to each other. A gap may be provided between two adjacent optical fibers 11 . In this case, the plurality of fixing portions 12 are intermittently arranged in the gap in the longitudinal direction Z. As shown in FIG. Alternatively, there may be no gap between adjacent two optical fibers 11 . Also, two optical fibers 11 may be continuously fixed in the longitudinal direction Z to constitute an optical fiber group, and a plurality of optical fiber groups may be intermittently fixed by a plurality of fixing parts 12 . As shown in FIG. 3 , the plurality of fixing portions 12 are intermittently arranged two-dimensionally in the longitudinal direction Z and the tape width direction W. As shown in FIG. In addition, the arrangement of the fixing part 12 is not limited to the example of FIG. 3, It can change suitably. In addition, the arrangement pattern of the fixed portion 12 may not be a constant pattern in the longitudinal direction Z or the tape width direction W. The arrangement pattern of the fixed portion 12 may not be a fixed pattern between different intermittently fixed tape core wires 10 . For example, UV curable resin can also be used as the material of the fixing portion 12 . However, the material of the fixing portion 12 is not particularly limited as long as adjacent optical fibers can be fixed, and can be changed as appropriate.

如圖4A所示,在光纖集合體1中,複數個光纖單元U及包含於該等光纖單元U的複數個間歇固定帶芯線10是週期性地撚合。本實施形態之複數個光纖單元U及間歇固定帶芯線10是撚合成SZ狀。更詳細而言,光纖集合體1具有SZ撚轉構造,前述SZ撚轉構造是包含順撚轉部31及逆撚轉部32的週期30會在長邊方向Z上重複。週期30也稱為撚轉間距30。在順撚轉部31及逆撚轉部32的每一個中,複數個光纖單元U及包含於該等光纖單元U的複數個間歇固定帶芯線10互相撚合。更詳細而言,在順撚轉部31及逆撚轉部32的每一個中,各光纖單元U(間歇固定帶芯線10)是繞著光纖集合體1的中心軸線O而捲繞。如圖4A所示,在順撚轉部31中光纖集合體1撚合的方向、以及在逆撚轉部32中光纖集合體1撚合的方向是互相相反的方向。另外,在順撚轉部31及逆撚轉部32中,內層單元Uin的撚轉角(捲繞角)與外層單元Uout的撚轉角(捲繞角)亦可為相等,亦可為不同。As shown in FIG. 4A , in the optical fiber assembly 1 , a plurality of optical fiber units U and a plurality of intermittent fixed tape core wires 10 included in the optical fiber units U are periodically twisted. In this embodiment, a plurality of optical fiber units U and intermittently fixed tape core wires 10 are twisted into an SZ shape. In more detail, the optical fiber assembly 1 has an SZ twisted structure, and the aforementioned SZ twisted structure is such that the cycle 30 including the forward twisted portion 31 and the reverse twisted portion 32 repeats in the longitudinal direction Z. Period 30 is also referred to as twist pitch 30 . In each of the forward twisting part 31 and the reverse twisting part 32, a plurality of optical fiber units U and a plurality of intermittent fixed tape core wires 10 included in the optical fiber units U are twisted with each other. More specifically, in each of the forward-twisting section 31 and the reverse-twisting section 32 , each optical fiber unit U (intermittently fixed with a core wire 10 ) is wound around the central axis O of the optical fiber assembly 1 . As shown in FIG. 4A , the direction in which the optical fiber assembly 1 is twisted in the forward twist section 31 and the direction in which the optical fiber assembly 1 is twisted in the reverse twist section 32 are opposite to each other. In addition, in the forward twisting part 31 and the reverse twisting part 32, the twist angle (winding angle) of the inner layer unit Uin and the twist angle (winding angle) of the outer layer unit Uout may be equal or different.

在此,在本說明書中,為了容易說明以下,針對本實施形態之光纖集合體1,如圖4A所示地定義反轉區域41及旋轉區域42。反轉區域41是以順撚轉部31與逆撚轉部32的邊界B為中心而在長邊方向Z上擴展的區域。亦即,反轉區域41是間歇固定帶芯線10撚合的方向反轉的區域。將週期(撚轉間距)30的尺寸設為P,反轉區域41的長邊方向Z上的尺寸為P/4。旋轉區域42是反轉區域41以外的區域。換言之,旋轉區域42是位於反轉區域41之間的區域。旋轉區域42是間歇固定帶芯線10以一個方向撚合(捲繞)的區域。在本實施形態之光纖集合體1中,反轉區域41與旋轉區域42是在長邊方向Z上交互地重複。Here, in this specification, in order to facilitate the following description, the inversion region 41 and the rotation region 42 are defined as shown in FIG. 4A for the optical fiber assembly 1 of the present embodiment. The reversed region 41 is a region extending in the longitudinal direction Z around the boundary B between the forward twisted portion 31 and the reversed twisted portion 32 . That is, the reverse region 41 is a region where the direction in which the intermittently fixed tape core wires 10 are twisted is reversed. Assume that the dimension of the period (twisting pitch) 30 is P, and the dimension in the longitudinal direction Z of the inversion region 41 is P/4. The rotation area 42 is an area other than the inversion area 41 . In other words, the rotation area 42 is an area located between the inversion areas 41 . The rotating area 42 is an area where the tape core wire 10 is intermittently fixed and twisted (wound) in one direction. In the optical fiber assembly 1 of the present embodiment, the inversion regions 41 and the rotation regions 42 alternately repeat in the longitudinal direction Z.

另外,將光纖單元U及間歇固定帶芯線10週期性地撚合的構成,並不限定於上述SZ撚轉構造。如圖4B所示,複數個光纖單元U及複數個間歇固定帶芯線10亦可螺旋狀地撚合。換言之,光纖集合體1亦可僅具有順撚轉部31及逆撚轉部32當中的其中一個。在此情況下,週期(撚轉間距)30是定義為使某個光纖單元U(間歇固定帶芯線10)繞著光纖集合體1的中心軸線O繞一圈的範圍(參照圖4B)。In addition, the configuration in which the optical fiber unit U and the intermittent fixed tape core wire 10 are periodically twisted is not limited to the above-mentioned SZ twisted structure. As shown in FIG. 4B , a plurality of optical fiber units U and a plurality of intermittent fixed tape core wires 10 may also be helically twisted. In other words, the optical fiber assembly 1 may have only one of the forward twisted portion 31 and the reverse twisted portion 32 . In this case, the period (twisting pitch) 30 is defined as a range in which a certain optical fiber unit U (intermittent fixed tape core 10) makes one turn around the central axis O of the optical fiber assembly 1 (see FIG. 4B ).

如圖5所示,在本實施形態之光纖集合體1中,複數個間歇固定帶芯線10是以在橫剖面視角下縐彎的狀態來積層。在圖5中,屬於相同的間歇固定帶芯線10的光纖11是由實線來連結。另外,「縐彎的狀態」是指光纖集合體1所包含的至少1個間歇固定帶芯線10彎曲的狀態。又,間歇固定帶芯線10積層的形狀是在光纖集合體1的長邊方向Z上變化。換言之,間歇固定帶芯線10的縐彎狀態是在光纖集合體1的長邊方向Z上變化。進一步換言之,光纖集合體1的剖面形狀是在光纖集合體1的長邊方向Z上變化。As shown in FIG. 5 , in the optical fiber assembly 1 of the present embodiment, a plurality of intermittently fixed tape core wires 10 are stacked in a state of being bent when viewed in cross section. In FIG. 5 , optical fibers 11 belonging to the same intermittent fixed tape core wire 10 are connected by solid wires. In addition, the "crimped state" refers to a state in which at least one intermittent fixed tape core wire 10 included in the optical fiber assembly 1 is bent. In addition, the shape of the laminated layers of intermittent fixed tape core wires 10 changes in the longitudinal direction Z of the optical fiber assembly 1 . In other words, the crimped state of the intermittent fixed tape core wire 10 changes in the longitudinal direction Z of the optical fiber assembly 1 . In other words, the cross-sectional shape of the optical fiber assembly 1 changes in the longitudinal direction Z of the optical fiber assembly 1 .

在本說明書中,為了評估間歇固定帶芯線10的縐彎狀態,導入如以下地定義的向量MG、GU、及純量LT、LU。在此,圖6是在xy平面上描繪了圖5所示的光纖集合體1(光纖單元U)的橫剖面圖的圖。在圖6中,將光纖單元U所包含的6個間歇固定帶芯線10分別稱為第1帶~第6帶。In this specification, vectors MG, GU, and scalar quantities LT, LU defined as follows are introduced in order to evaluate the crepe state of the intermittent fixed tape core wire 10 . Here, FIG. 6 is a diagram depicting a cross-sectional view of the optical fiber assembly 1 (optical fiber unit U) shown in FIG. 5 on the xy plane. In FIG. 6 , the six intermittent fixed tape core wires 10 included in the optical fiber unit U are referred to as a first tape to a sixth tape, respectively.

向量MG是針對光纖集合體1的長邊方向Z上的各位置,按每個間歇固定帶芯線10而定義的向量量。在橫剖面中,將構成間歇固定帶芯線10的光纖11當中位於兩端的2個光纖11的中點設為M,將間歇固定帶芯線10的重心設為G。如圖6所示,向量MG是以中點M為起點,以重心G為終點的向量。在圖6中,將針對第1帶定義的向量MG稱為向量MG1,將針對第2帶定義的向量MG稱為向量MG2。針對第3帶~第6帶也是同樣的。另外,在間歇固定帶芯線10已縐彎(彎曲)的狀態下,中點M與重心G一致的情形是極少見的。The vector MG is a vector quantity defined for each position in the longitudinal direction Z of the optical fiber assembly 1 for each intermittent fixed tape core 10 . In the cross section, M is the midpoint of the two optical fibers 11 located at both ends among the optical fibers 11 constituting the intermittently fixed tape 10 , and G is the center of gravity of the intermittently fixed tape 10 . As shown in FIG. 6 , the vector MG is a vector starting from the midpoint M and ending at the center of gravity G. In FIG. 6 , the vector MG defined for the first band is called vector MG1 , and the vector MG defined for the second band is called vector MG2 . The same applies to the 3rd to 6th bands. In addition, it is extremely rare that the midpoint M coincides with the center of gravity G in a state where the intermittent fixed tape core wire 10 has been crimped (bent).

純量LT是針對光纖集合體1的長邊方向Z上的各位置,按每個間歇固定帶芯線10而定義的純量。純量LT為向量MG的大小。如從上述定義可得知,純量LT是對間歇固定帶芯線10的縐彎狀態賦予特徵的量。更具體而言,可考慮到的是,純量LT越大,則間歇固定帶芯線10越大幅地縐彎。這是因為可考慮到的是間歇固定帶芯線10的彎曲越大(間歇固定帶芯線10越縐彎)則向量MG的純量(大小)LT越大。The scalar LT is a scalar defined for each position in the longitudinal direction Z of the optical fiber assembly 1 for every intermittent fixed tape core wire 10 . The scalar LT is the magnitude of the vector MG. As can be seen from the above definition, the scalar amount LT is an amount that characterizes the creped state of the intermittent fixed tape core wire 10 . More specifically, it is considered that the intermittent fixed tape core wire 10 is more largely creped as the scalar amount LT is larger. This is because it can be considered that the greater the curvature of the intermittent fixed tape core wire 10 (the more creped the intermittent fixed tape core wire 10 ), the larger the scalar (magnitude) LT of the vector MG.

向量GU是針對光纖集合體1的長邊方向Z上的各位置,按每個光纖單元U而定義的向量量。向量GU是針對光纖單元U所包含的全部的間歇固定帶芯線10來合成向量MG而得到的向量(參照圖6)。The vector GU is a vector quantity defined for each optical fiber unit U for each position in the longitudinal direction Z of the optical fiber assembly 1 . The vector GU is a vector obtained by synthesizing the vector MG for all the intermittent fixed tape cores 10 included in the optical fiber unit U (see FIG. 6 ).

純量LU是針對光纖集合體1的長邊方向Z上的各位置,按每個光纖單元U而定義的純量。純量LU為向量GU的大小。如從上述定義可得知,純量LU是對光纖單元U的縐彎狀態賦予特徵的量。更具體而言,可考慮到的是,純量LU越大,則光纖單元U越大幅地縐彎。這是因為可考慮到的是光纖單元U所包含的間歇固定帶芯線10的彎曲越大(間歇固定帶芯線10越縐彎)則向量MG的大小越大,合成向量MG後的向量即向量GU的純量(大小)LU也會越大。 [實施例] The scalar LU is a scalar defined for each optical fiber unit U for each position in the longitudinal direction Z of the optical fiber assembly 1 . The scalar LU is the size of the vector GU. As can be seen from the above definition, the scalar quantity LU is a quantity that characterizes the crimped state of the optical fiber unit U. More specifically, it can be considered that the larger the scalar amount LU is, the more greatly the optical fiber unit U is bent. This is because it can be considered that the greater the bending of the intermittent fixed tape core wire 10 included in the optical fiber unit U (the more curved the intermittent fixed tape core wire 10), the larger the magnitude of the vector MG, and the vector GU after the vector MG is synthesized The scalar (size) of LU will also be larger. [Example]

以下,使用具體的實施例來說明上述實施形態。另外,本發明並不限定於以下的實施例。Hereinafter, the above-mentioned embodiments will be described using specific examples. In addition, this invention is not limited to a following Example.

(實施例) 製作了前述實施形態之864芯的光纖集合體及光纖電纜,來作為實施例之光纖集合體1及光纖電纜100。實施例之光纖集合體1具有撚合成SZ狀的12個光纖單元U。各光纖單元U具有藉由束材20捆束的6個間歇固定帶芯線10。各間歇固定帶芯線10包含12個光纖11。又,在長邊方向Z上的各位置中,內層單元Uin的撚轉角(捲繞角)與外層單元Uout的撚轉角(捲繞角)是視為彼此大致相等。外被件110的外徑是設為18.2mm,外被件110的內徑是設為11.5mm。捲壓件120的厚度是設為0.2mm。光纖集合體1的外徑為約11.1mm。 (Example) The 864-core optical fiber assembly and optical fiber cable of the above-mentioned embodiment were produced as the optical fiber assembly 1 and optical fiber cable 100 of the example. The optical fiber assembly 1 of the embodiment has 12 optical fiber units U twisted into an SZ shape. Each optical fiber unit U has six intermittently fixed ribbon cores 10 bundled by a bundle material 20 . Each intermittent fixed tape core wire 10 includes 12 optical fibers 11 . Also, at each position in the longitudinal direction Z, the twist angle (winding angle) of the inner layer unit Uin and the twist angle (winding angle) of the outer layer unit Uout are considered to be substantially equal to each other. The outer diameter of the outer covering 110 is set to 18.2mm, and the inner diameter of the outer covering 110 is set to 11.5mm. The thickness of the crimping member 120 is set to 0.2 mm. The outer diameter of the optical fiber assembly 1 is about 11.1 mm.

表1及表2是針對在實施例之光纖集合體1的長邊方向Z的各位置,將計測了純量LU的結果彙整而成的表。更詳細而言,純量LU的計測是針對在長邊方向Z上連續的4個週期(撚轉間距)30所包含的反轉區域41及旋轉區域42來進行。另外,在表1及表2中,在+Z的方向上依序將9個反轉區域41分別稱為第1反轉區域~第9反轉區域。同樣地,將8個旋轉區域42分別稱為第1旋轉區域~第8旋轉區域。又,將12個光纖單元U分別稱為第1單元~第12單元,並且以1~12的單元編號來顯示。另外,在第1旋轉區域中,在長邊方向Z上將第1旋轉區域細分化為8個位置來進行純量LU的計測。在表1中,在+Z的方向上依序將該8個計測位置處顯示為第1旋轉區域(1/8)~第1旋轉區域(8/8)。同樣地,在第2旋轉區域中,在長邊方向Z上將第2旋轉區域細分化為5個位置來進行純量LU的計測。在+Z的方向上依序將該5個計測位置處顯示為第2旋轉區域(1/5)~第2旋轉區域(5/5)。Table 1 and Table 2 are tables compiled of the results of measuring the scalar quantity LU for each position in the longitudinal direction Z of the optical fiber assembly 1 of the embodiment. More specifically, the measurement of the scalar LU is performed for the inversion region 41 and the rotation region 42 included in the four consecutive cycles (twisting pitch) 30 in the longitudinal direction Z. In addition, in Table 1 and Table 2, the nine inversion regions 41 are respectively referred to as a first inversion region to a ninth inversion region sequentially in the +Z direction. Similarly, the eight rotation areas 42 are respectively referred to as a first rotation area to an eighth rotation area. In addition, the 12 optical fiber units U are respectively referred to as a first unit to a twelfth unit, and are displayed with unit numbers 1 to 12. In addition, in the first rotation area, the first rotation area is subdivided into eight positions in the longitudinal direction Z, and the measurement of the scalar quantity LU is performed. In Table 1, these eight measurement positions are sequentially shown as the first rotation area (1/8) to the first rotation area (8/8) in the +Z direction. Similarly, in the second rotation area, the measurement of the scalar LU is performed by subdividing the second rotation area into five positions in the longitudinal direction Z. The five measurement positions are sequentially displayed in the +Z direction as the second rotation area (1/5) to the second rotation area (5/5).

[表1] [Table 1]

[表2] [Table 2]

表1及表2中的「全部(TOTAL)」是顯示針對光纖集合體1所包含的間歇固定帶芯線10的全部來合成向量MG而得到的向量(向量GU)的大小。又,「最大」是針對各區域而顯示第1單元~第12單元中的純量LU的最大值。同樣地,「最小」是針對各區域而顯示第1單元~第12單元中的純量LU的最小值。「差」是針對各區域而顯示從上述最大值減去最小值的值。又,「平均」是針對各光纖單元U而顯示成為測定對象的整個區域中的純量LU的平均值。"TOTAL" in Table 1 and Table 2 indicates the magnitude of a vector (vector GU) obtained by synthesizing vector MG for all intermittent fixed tape core wires 10 included in optical fiber assembly 1 . In addition, "maximum" displays the maximum value of the scalar LU in the first to twelfth cells for each area. Similarly, "Minimum" displays the minimum value of the scalar LU in the first to twelfth cells for each area. "Difference" is a value obtained by subtracting the minimum value from the above-mentioned maximum value for each area. In addition, "average" indicates the average value of the scalar amount LU in the entire area to be measured for each optical fiber unit U.

圖7是將表1及表2顯示為圖表的圖。在圖7中,在+Z的方向上依序將計測對象即4個週期30分別稱為第1週期~第4週期。另外,在圖7中,將第1旋轉區域(5/8)中的純量LU作為代表值,而使用作為第1旋轉區域中的純量LU。同樣地,將第2旋轉區域(3/5)中的純量LU作為代表值,而使用作為第2旋轉區域中的純量LU。但是,第1旋轉區域(5/8)是視為位於第1旋轉區域的長邊方向Z上的大致中央位置,第2旋轉區域(3/5)是視為位於第2旋轉區域的長邊方向Z上的大致中央位置。 圖8是將僅針對反轉區域41,亦即第1反轉區域~第9反轉區域)計測了純量LU的結果顯示為圖表的圖。 圖9是將僅針對位於第1反轉區域與第2反轉區域之間的旋轉區域42,亦即第1旋轉區域(1/8)~第1旋轉區域(8/8)計測了純量LU的結果顯示為圖表的圖。 FIG. 7 is a diagram showing Table 1 and Table 2 as a graph. In FIG. 7 , the four cycles 30 which are measurement objects are referred to as the first cycle to the fourth cycle in order in the +Z direction. In addition, in FIG. 7 , the scalar LU in the first rotation region (5/8) is used as a representative value, and is used as the scalar LU in the first rotation region. Similarly, the scalar LU in the second rotation region (3/5) is used as a representative value as the scalar LU in the second rotation region. However, the first rotation area (5/8) is considered to be located approximately in the center of the longitudinal direction Z of the first rotation area, and the second rotation area (3/5) is considered to be located on the long side of the second rotation area. Approximate central position in direction Z. FIG. 8 is a graph showing the results of measuring the scalar amount LU for only the inversion region 41 , that is, the first to ninth inversion regions). FIG. 9 is a measurement of the scalar value only for the rotation region 42 between the first rotation region and the second rotation region, that is, the first rotation region (1/8) to the first rotation region (8/8). The results of LU are displayed as a plot of the graph.

另外,各位置中的純量LU的計測是藉由以下方式來進行:在長邊方向Z上以固定間隔來對光纖集合體1的剖面進行攝影,並且在xy平面上對該攝影所得到的圖像進行描跡。更具體而言,純量LU的計測是由以下的順序來進行。亦即,對間歇固定帶芯線10(光纖單元U)的預定光纖11入射光,並且解析包含傳播已入射的光的光纖11之光纖單元U是如何地撚轉,藉此確認各間歇固定帶芯線10(光纖單元U)的捲繞角,來判別反轉區域41與旋轉區域42。之後,以環氧樹脂固定光纖集合體1,在長邊方向Z上的各位置上切斷。研磨該已固定的光纖集合體1以使橫剖面變得清楚後,以顯微鏡來對橫剖面的圖像進行攝影。在藉由顯微鏡所得到的圖像上,在xy平面上描繪各光纖11的位置,並且計測純量LU。另外,亦可在以環氧樹脂固定光纖集合體1後,在長邊方向Z上的各位置上切斷光纖電纜100。在此情況下,亦可例如從光纖電纜100的長邊方向Z上的一邊的端部注入環氧樹脂,並且從另一邊的端部吸引環氧樹脂,藉此將環氧樹脂充填於外被件110內。In addition, the measurement of the scalar LU at each position is performed by photographing the cross-section of the optical fiber assembly 1 at regular intervals in the longitudinal direction Z, and taking images obtained by the photographs on the xy plane. The image is traced. More specifically, the measurement of the scalar LU is performed in the following procedure. That is, light is incident on a predetermined optical fiber 11 with a cored wire 10 (optical fiber unit U) intermittently fixed, and how the optical fiber unit U including the optical fiber 11 propagating the incident light is twisted, thereby confirming that each intermittently fixed cored wire The winding angle of 10 (optical fiber unit U) is used to distinguish the inversion area 41 and the rotation area 42 . Thereafter, the optical fiber assembly 1 is fixed with epoxy resin, and cut at each position in the longitudinal direction Z. After polishing the fixed optical fiber assembly 1 to make the cross-section clear, an image of the cross-section was photographed with a microscope. On the image obtained by the microscope, the position of each optical fiber 11 is plotted on the xy plane, and the scalar amount LU is measured. In addition, after fixing the optical fiber assembly 1 with epoxy resin, the optical fiber cable 100 may be cut at each position in the longitudinal direction Z. In this case, for example, the epoxy resin may be injected from one end in the longitudinal direction Z of the optical fiber cable 100, and the epoxy resin may be sucked from the other end, thereby filling the outer jacket with the epoxy resin. within 110 pieces.

如從圖7所看到,在實施例之光纖集合體1的第1週期~第4週期的每一個中,存在有純量LU的大小關係對調的至少一組光纖單元U。換言之,如圖7所示,當以複數條折線來表示各單元的純量LU的長邊方向Z上的轉變時,在各週期中至少存在有1個兩條折線交叉的交點。As can be seen from FIG. 7 , in each of the first period to the fourth period of the optical fiber assembly 1 of the embodiment, there is at least one group of optical fiber units U in which the magnitude relationship of the scalar LU is reversed. In other words, as shown in FIG. 7 , when the transition in the longitudinal direction Z of the scalar LU of each unit is represented by a plurality of broken lines, there is at least one intersection point where two broken lines intersect in each period.

更具體而言,列舉一例來說明。例如,由圖7及表1,在第1週期中, ・在第1單元中,第1反轉區域中的純量LU為0.7,第1旋轉區域(5/8)中的純量LU為0.3, ・在第2單元中,第1反轉區域中的純量LU為0.3,第1旋轉區域(5/8)中的純量LU為0.4。 像這樣,在第1週期的第1反轉區域與第1旋轉區域之間,第1單元與第2單元的純量LU的大小關係會對調,在圖7中存在有第1單元與第2單元的2條折線交叉的交點。在上述說明中,雖然僅說明了在第1單元與第2單元中,在第1反轉區域與第1旋轉區域之間折線會交叉的例子,但是在圖7中存在有其他複數個折線彼此的交點。並且,當以複數條折線來表示各單元的純量LU的長邊方向Z上的轉變時,在各週期中至少存在有1個兩條折線交叉的交點。 More specifically, an example will be given and described. For example, from Figure 7 and Table 1, in the first cycle, ・In unit 1, the scalar LU in the 1st inversion area is 0.7, the scalar LU in the 1st rotation area (5/8) is 0.3, ・In unit 2, the scalar LU in the 1st inversion area is 0.3, and the scalar LU in the 1st rotation area (5/8) is 0.4. In this way, between the first inversion area and the first rotation area in the first cycle, the magnitude relationship of the scalar LU of the first unit and the second unit is reversed, and there are the first unit and the second unit in FIG. 7 The intersection point where the 2 polylines of the cell intersect. In the above description, only the example in which the broken lines intersect between the first inversion area and the first rotation area in the first unit and the second unit was described, but in FIG. intersection point. Furthermore, when the transition in the longitudinal direction Z of the scalar LU of each unit is represented by a plurality of broken lines, at least one intersection point where two broken lines intersect exists in each period.

又,可得知下述情形:由於針對光纖單元U的純量LU,上述關係會成立,因此在數學上針對間歇固定帶芯線10的純量LT,同樣的關係也會成立。亦即,在光纖集合體1的第1週期~第4週期的每一個中,存在有純量LT的大小關係對調的至少一組間歇固定帶芯線10。 更詳細而言,如上述,向量GU是針對光纖單元U所包含的全部的間歇固定帶芯線10來合成向量MG而得到的向量。向量GU的大小為純量LU,向量MG的大小為純量LT。在第1週期的第1反轉區域與第1旋轉區域之間,第1單元及第2單元的純量LU的大小關係的對調會發生,在此情況下,在數學上可得知,第1單元所包含的任一個間歇固定帶芯線10的純量LT與第2單元所包含的任一個間歇固定帶芯線10的純量LT的大小關係的對調會同樣地發生。 Furthermore, it can be seen that since the above relationship holds for the scalar quantity LU of the optical fiber unit U, the same relationship holds true mathematically for the scalar quantity LT of the intermittently fixed tape core 10 . That is, in each of the first period to the fourth period of the optical fiber assembly 1 , at least one set of intermittent fixed tape core wires 10 exists in which the magnitude relationship of the scalar LT is reversed. More specifically, as described above, the vector GU is a vector obtained by synthesizing the vector MG for all the intermittent fixed tape cores 10 included in the optical fiber unit U. The size of the vector GU is the scalar LU, and the size of the vector MG is the scalar LT. Between the first inversion region and the first rotation region of the first cycle, the magnitude relationship of the scalar LU of the first unit and the second unit will be reversed. In this case, it can be known mathematically that the first Inversion of the magnitude relationship between the scalar amount LT of any one of the intermittent fixed tape core wires 10 included in the first unit and the scalar amount LT of any one of the intermittent fixed tape core wires 10 included in the second unit occurs similarly.

使用上述的一個例子來更具體地說明, (1)在第1反轉區域中,「第1單元的純量LU>第2單元的純量LU」, (2)在第1旋轉區域中,「第1單元的純量LU<第2單元的純量LU」。 在此情況下,可清楚得知以下情形:將第1單元所包含的特定的1個間歇固定帶芯線設為第1帶,且將第2單元所包含的特定的1個間歇固定帶芯線設為第2帶時, (1')在第1反轉區域中,有「第1單元所包含的第1帶的純量LT>第2單元所包含的第2帶的純量LT」時, (2')在第1旋轉區域中,會存在有「第1單元所包含的第1帶的純量LT<第2單元所包含的第2帶的純量LT」成立的至少1組間歇固定帶芯線。 像這樣,在本實施例中,在撚合的週期的每一個中,存在有純量LT的大小關係對調的至少一組前述間歇固定帶芯線(包含上述說明中的第1帶與第2帶的1組間歇固定帶芯線)。 To be more specific using an example from above, (1) In the first reverse region, "the scalar LU of the first unit > the scalar LU of the second unit", (2) In the first rotation region, "the scalar LU of the first unit<the scalar LU of the second unit". In this case, it can be clearly seen that the specific one intermittent fixed belt core wire included in the first unit is set as the first belt, and the specific one intermittent fixed belt core wire included in the second unit is set as the first belt. For the 2nd band, (1') In the first inversion region, when "the scalar LT of the first band included in the first unit > the scalar LT of the second band included in the second unit", (2') In the first rotation area, there will be at least one set of intermittent fixation where "the scalar LT of the first band included in the first unit < the scalar LT of the second band included in the second unit" holds With core wire. As such, in this embodiment, in each of the twisting cycles, there is at least one set of intermittent fixed belt core wires (including the first belt and the second belt in the above description) in which the magnitude relationship of the scalar LT is reversed. 1 set of intermittent fixed belt core wires).

又,由圖7及表1,在第4週期中, ・第9單元的第7反轉區域、第7旋轉區域、第8反轉區域、及第8旋轉區域中的純量LU分別為0.4、0.4、0.2、0.3, ・第12單元的第7反轉區域、第7旋轉區域、第8反轉區域、及第8旋轉區域中的純量LU分別為0.7、0.9、0.6、0.6。 在此,將第3週期設為包含以下區域的週期:在長邊方向Z上,包含進行了第5反轉區域的純量LU之計測的位置處,且比該位置處更靠+Z側的區域、第5旋轉區域、第6反轉區域、第6旋轉區域、及比進行了第7反轉區域的純量LU之計測的位置處更靠-Z側的區域。 將第4週期設為包含以下區域的週期:在長邊方向Z上,包含進行了第7反轉區域的純量LU之計測的位置處,且比該邊界B更靠+Z側的區域、第7旋轉區域、第8反轉區域、第8旋轉區域、及比進行了第9反轉區域的純量LU之計測的位置處更靠-Z側的區域。 Also, from Figure 7 and Table 1, in the fourth cycle, ・The scalar LU in the 7th inversion area, the 7th inversion area, the 8th inversion area, and the 8th inversion area of unit 9 are 0.4, 0.4, 0.2, 0.3, respectively, ・The scalar LU in the 7th inversion area, the 7th rotation area, the 8th inversion area, and the 8th rotation area of the 12th unit were 0.7, 0.9, 0.6, and 0.6, respectively. Here, the third cycle is defined as a cycle that includes a region in the longitudinal direction Z that includes the position where the measurement of the scalar LU in the fifth inversion region is performed, and that is on the +Z side of the position. area, the fifth rotation area, the sixth inversion area, the sixth rotation area, and the area on the -Z side from the position where the scalar LU was measured in the seventh inversion area. The fourth period is defined as a period including the area on the +Z side of the boundary B at the position where the measurement of the scalar LU of the seventh inversion area was performed in the longitudinal direction Z, the area on the The 7th rotation area, the 8th inversion area, the 8th rotation area, and the area on the −Z side from the position where the measurement of the scalar LU in the 9th inversion area was performed.

在第4週期的第7反轉區域、第7旋轉區域、第8反轉區域、及第8旋轉區域中,第12單元的純量LU是比第9單元的純量LU更大。 此外,第9單元的第9反轉區域的純量LU為0.2,第12單元的第9反轉區域的純量LU為0.4,在第9反轉區域中,第4週期中的純量LU的大小關係並沒有對調。亦即,如圖7所示,和第9單元與第12單元相對應的折線彼此在第4週期中並未交叉。據此,可以說是在第4週期中第9單元與第12單元的純量LU的大小關係並未對調。 In the seventh inversion region, the seventh rotation region, the eighth inversion region, and the eighth rotation region in the fourth cycle, the scalar quantity LU of the 12th unit is larger than that of the ninth unit. Also, the scalar LU in the 9th inversion region of the 9th unit is 0.2, the scalar LU in the 9th inversion region of the 12th unit is 0.4, and in the 9th inversion region, the scalar LU in the 4th cycle The magnitude relationship of is not reversed. That is, as shown in FIG. 7 , the broken lines corresponding to the ninth unit and the twelfth unit do not cross each other in the fourth cycle. From this, it can be said that in the fourth cycle, the size relationship of the scalar LU of the ninth unit and the twelfth unit is not reversed.

在第3週期的第6旋轉區域中, ・第9單元的純量LU為0.2, ・第12單元的純量LU為0.1。 亦即,在第3週期的第6旋轉區域中,第12單元的純量LU會比第9單元的純量LU更小,和第4週期相較之下,純量LU的大小關係是對調的。據此,如圖7所示,在第3週期中,和該2個單元相對應的折線彼此是交叉的。 像這樣,在撚合的週期當中的一個即第X週期(X為任意的整數。在上述說明中為第4週期)中,雖然至少一組光纖單元U(第9單元以及第12單元)的純量LU的大小關係不會對調,但是在第X週期以外的其他週期(例如第3週期)中,純量LU的大小關係會對調。 In the 6th rotation area of the 3rd cycle, ・The scalar LU of Unit 9 is 0.2, ・The scalar LU of the 12th unit is 0.1. That is to say, in the 6th rotation area of the 3rd cycle, the scalar LU of the 12th unit will be smaller than the scalar LU of the 9th unit, compared with the 4th cycle, the magnitude relationship of the scalar LU is reversed of. Accordingly, as shown in FIG. 7 , in the third cycle, the broken lines corresponding to the two cells intersect each other. Like this, in one of the twisting cycles, that is, the Xth cycle (X is an arbitrary integer. In the above description, it is the fourth cycle), although at least one group of optical fiber units U (the ninth unit and the twelfth unit) The magnitude relationship of the scalar LUs will not be reversed, but in periods other than the X period (for example, the 3rd period), the magnitude relationship of the scalar LUs will be reversed.

又,如從圖8所看到,在實施例之光纖集合體1的第1反轉區域~第9反轉區域的每一個中,存在有純量LU的大小關係對調的至少一組光纖單元U。更具體而言,在第1反轉區域~第9反轉區域當中,在長邊方向Z上相鄰的2個反轉區域41彼此之間,存在有純量LU的大小關係對調的至少一組光纖單元U。Also, as can be seen from FIG. 8, in each of the first inversion region to the ninth inversion region of the optical fiber assembly 1 of the embodiment, there is at least one group of optical fiber units in which the magnitude relationship of the scalar LU is reversed. U. More specifically, among the first to ninth inversion regions, between two inversion regions 41 adjacent in the longitudinal direction Z, at least one of the magnitude relationships of the scalar LU is reversed. Group fiber unit U.

又,如從圖9所看到,在實施例之光纖集合體1的第1旋轉區域(1/8)~第1旋轉區域(8/8)的每一個中,存在有純量LU的大小關係對調的至少一組光纖單元U。更具體而言,在第1旋轉區域(1/8)~第1旋轉區域(8/8)當中,在長邊方向Z上相鄰的2個區域彼此之間,存在有純量LU的大小關係對調的至少一組光纖單元U。亦即,在實施例之光纖集合體1中,在一個旋轉區域42之中,存在有純量LU的大小關係對調的至少一組光纖單元U。換言之,在不包含反轉區域41而僅以旋轉區域42構成的區間中,存在有純量LU的大小關係對調的至少一組光纖單元U。Also, as can be seen from FIG. 9, in each of the first rotation area (1/8) to the first rotation area (8/8) of the optical fiber assembly 1 of the embodiment, there is a scalar LU of the magnitude At least one group of optical fiber units U whose relationship is reversed. More specifically, in the first rotation area (1/8) to the first rotation area (8/8), there is a scalar LU between two adjacent areas in the longitudinal direction Z. At least one group of optical fiber units U whose relationship is reversed. That is, in the optical fiber assembly 1 of the embodiment, in one rotating region 42, there is at least one group of optical fiber units U in which the magnitude relationship of the scalar LU is reversed. In other words, there is at least one group of optical fiber units U in which the magnitude relationship of the scalar LU is reversed in the section not including the inversion region 41 but only the rotation region 42 .

另外,為了使間歇固定帶芯線10的縐彎狀態變化,以使和純量LT、LU、向量MG、GU相關的上述關係成立,在光纖集合體1的製造過程中會使用例如以下所示的手法。第1手法是在將光纖單元U及間歇固定帶芯線10撚合成SZ狀的過程中,使施加於光纖單元U及間歇固定帶芯線10的張力在時間上變化的手法。第2手法是使夾板的旋轉速度在時間上變化的手法,前述夾板是在將光纖單元U及間歇固定帶芯線10撚合成SZ狀時所使用的夾板。第3手法是針對形成在上述夾板且分別供光纖單元U及間歇固定帶芯線10插通的複數個貫穿孔,使各貫穿孔與夾板的中心之間的距離不同之手法。第4手法是針對上述複數個貫穿孔,使各貫穿孔的形狀或大小不同之手法。第5手法是調整使撚合的方向反轉時的(上述夾板的旋轉的)暫時停止的時間長度之手法。第6手法是使芯數互相不同的光纖單元U彼此相鄰配置的手法。另外,上述第1手法~第6手法僅為一例,只要可以製造有關於純量LT、LU、向量MG、GU的上述關係成立的光纖集合體1,亦可使用其他手法。又,亦可組合上述手法當中的幾個手法來使用。In addition, in order to change the crepe state of the intermittent fixed tape core wire 10 so that the above-mentioned relationship with the scalar quantities LT, LU, and the vectors MG and GU holds true, in the manufacturing process of the optical fiber assembly 1, for example, the following technique. The first method is a method of temporally changing the tension applied to the optical fiber unit U and the intermittent fixed tape core wire 10 during twisting the optical fiber unit U and the intermittent fixed tape core wire 10 into an SZ shape. The second method is a method of temporally changing the rotation speed of a clamp used when twisting the optical fiber unit U and the intermittent fixed tape core wire 10 into an SZ shape. The third technique is to vary the distance between each through hole and the center of the clamp for the plurality of through holes formed in the clamp and through which the optical fiber unit U and the intermittently fixed tape core 10 are respectively inserted. The fourth method is a method of making the shapes or sizes of the through holes different for the above-mentioned plurality of through holes. The fifth method is a method of adjusting the time length of the temporary stop (rotation of the above-mentioned clamps) when the direction of twisting is reversed. The sixth method is a method of arranging optical fiber units U having different numbers of cores adjacent to each other. In addition, the first method to the sixth method described above are merely examples, and other methods may be used as long as the optical fiber assembly 1 in which the above-mentioned relationship regarding the scalars LT, LU, vectors MG, and GU is satisfied can be manufactured. In addition, some methods among the above-mentioned methods may be used in combination.

接著,針對如以上構成的光纖集合體1的作用來進行說明。Next, the action of the optical fiber assembly 1 configured as above will be described.

以往,已知有一種具有被外被件一併被覆的複數個光纖單元的光纖電纜(光纖集合體)。在像這樣的光纖電纜中,當產生彎曲、或在低溫環境下產生外被件的收縮之情況下,會有應變集中在特定的間歇固定帶芯線或光纖的情況。像這樣的應變集中會有帶來光纖電纜(光纖集合體)的最大傳輸損失的增大之情況。又,如上述對特定的間歇固定帶芯線(光纖)的應變集中,當光纖電纜(光纖集合體)的剖面形狀,亦即光纖單元(間歇固定帶芯線)的縐彎狀態在較長的區間中為固定的情況下,特別容易產生。換言之,對特定的間歇固定帶芯線的應變集中,在較長的區間中有相同的縐彎狀態連續的情況下會特別容易產生。Conventionally, an optical fiber cable (optical fiber assembly) having a plurality of optical fiber units collectively covered with a sheath is known. In such an optical fiber cable, when bending occurs or the sheath shrinks in a low-temperature environment, strain may concentrate on specific intermittent fixed ribbon core wires or optical fibers. Such concentration of strain may increase the maximum transmission loss of the optical fiber cable (optical fiber assembly). Also, as mentioned above, when the strain concentration of a specific intermittently fixed tape core (optical fiber) is present, when the cross-sectional shape of the optical fiber cable (optical fiber assembly), that is, the crimped state of the optical fiber unit (intermittently fixed tape core) is in a relatively long interval For fixed cases, it is especially easy to generate. In other words, strain concentration on a specific intermittent fixed tape core wire is particularly likely to occur when the same crimped state continues over a long section.

相對於此,在本實施形態之光纖集合體1中,在撚合的週期(撚轉間距)30的每一個中,存在有純量LT的大小關係對調的至少一組間歇固定帶芯線10。亦即,在撚合的週期30的每一個中,光纖集合體1的剖面形狀,亦即間歇固定帶芯線10的縐彎狀態會變化。從而,間歇固定帶芯線10的縐彎狀態不容易在長邊方向Z上形成為固定,而可以抑制應變集中在特定的間歇固定帶芯線10或光纖11的情形。藉此,可以抑制光纖集合體1的最大傳輸損失的增大。On the other hand, in the optical fiber assembly 1 of the present embodiment, at least one set of intermittently fixed cored wires 10 in which the magnitude relationship of the scalar LT is reversed exists for each twisting period (twisting pitch) 30 . That is, the cross-sectional shape of the optical fiber assembly 1 , that is, the crimped state of the intermittent fixed tape core wire 10 changes in each twisting cycle 30 . Therefore, the crimped state of the intermittently fixed tape core wire 10 is not easily fixed in the longitudinal direction Z, and the concentration of strain on a specific intermittently fixed tape core wire 10 or the optical fiber 11 can be suppressed. Thereby, an increase in the maximum transmission loss of the optical fiber assembly 1 can be suppressed.

如以上說明,本實施形態之光纖集合體1具備複數個間歇固定帶芯線10,前述複數個間歇固定帶芯線10包含複數個光纖11以及在長邊方向Z上間歇地固定複數個光纖11的複數個固定部12,複數個間歇固定帶芯線10是週期性地撚合,在橫剖面中,將複數個間歇固定帶芯線10當中的1個間歇固定帶芯線10中之位於兩端的2個光纖11的中點設為M,將重心設為G,將以中點M為起點且以重心G為終點的向量設為MG,將向量MG的大小設為純量LT時,在前述撚合的週期30的每一個中,存在有純量LT的大小關係對調的至少一組間歇固定帶芯線10。As described above, the optical fiber assembly 1 of the present embodiment includes a plurality of intermittently fixed tape core wires 10, the plurality of intermittently fixed tape core wires 10 include a plurality of optical fibers 11 and a plurality of optical fibers 11 intermittently fixed in the longitudinal direction Z. A fixed portion 12, a plurality of intermittently fixed core wires 10 are periodically twisted, in the cross section, one of the plurality of intermittently fixed core wires 10 is intermittently fixed with two optical fibers 11 located at both ends of the core wire 10 Set the midpoint of M as M, set the center of gravity as G, set the vector starting from the midpoint M and ending at the center of gravity G as MG, and set the magnitude of the vector MG as the scalar LT, in the aforementioned twisting period In each of 30, there is at least one set of intermittently fixed tape core wires 10 in which the magnitude relationship of the scalar LT is reversed.

根據此構成,可以抑制應變集中在特定的間歇固定帶芯線10或光纖11的情形,而可以抑制光纖集合體1的最大傳輸損失的增大。According to this configuration, it is possible to suppress the concentration of strain on a specific intermittent fixed tape core wire 10 or optical fiber 11 , and to suppress an increase in the maximum transmission loss of the optical fiber assembly 1 .

又,複數個間歇固定帶芯線10形成複數個光纖單元U,在複數個光纖單元U的每一個中,複數個間歇固定帶芯線10當中的至少二個以上的間歇固定帶芯線10亦可受到捆束。根據此構成,可以抑制應變集中在特定的光纖單元U的情形,而可以抑制光纖集合體1的最大傳輸損失的增大。Also, a plurality of intermittently fixed tape core wires 10 form a plurality of optical fiber units U, and in each of the plurality of optical fiber units U, at least two or more intermittently fixed tape core wires 10 among the plurality of intermittently fixed tape core wires 10 can also be bundled. bundle. According to this configuration, it is possible to suppress the concentration of strain on a specific optical fiber unit U, and to suppress an increase in the maximum transmission loss of the optical fiber assembly 1 .

又,將針對複數個光纖單元U當中的一個光纖單元U所包含的複數個間歇固定帶芯線10的全部來合成向量MG後的向量設為GU,將向量GU的大小設為純量LU時,在前述撚合的週期30的每一個中,亦可存在有純量LU的大小關係對調的至少一組光纖單元U。根據此構成,可以更確實地抑制應變集中在特定的光纖單元U的情形,而可以更確實地抑制光纖集合體1的最大傳輸損失的增大。Also, when a vector MG obtained by synthesizing a vector MG for all of the plurality of intermittent fixed tape core wires 10 included in one optical fiber unit U among the plurality of optical fiber units U is denoted as GU, and the magnitude of the vector GU is denoted as a scalar LU, In each of the aforementioned twisting periods 30, there may also be at least one group of optical fiber units U in which the magnitude relationship of the scalar LU is reversed. According to this configuration, the concentration of strain on the specific optical fiber unit U can be more reliably suppressed, and the increase in the maximum transmission loss of the optical fiber assembly 1 can be more reliably suppressed.

又,將針對複數個光纖單元U當中的一個光纖單元U所包含的複數個間歇固定帶芯線10的全部來合成向量MG後的向量設為GU,將向量GU的大小設為純量LU時,在撚合的週期30當中的一個即第X週期中,亦可存在有純量LU的大小關係不對調的至少一組前述光纖單元U,該一組前述光纖單元U在撚合的週期30當中的第X週期以外的週期30中,純量LU的大小關係會對調。根據此構成,可以更確實地抑制應變集中在特定的光纖單元U的情形,而可以更確實地抑制光纖集合體1的最大傳輸損失的增大。Also, when a vector MG obtained by synthesizing a vector MG for all of the plurality of intermittent fixed tape core wires 10 included in one optical fiber unit U among the plurality of optical fiber units U is denoted as GU, and the magnitude of the vector GU is denoted as a scalar LU, In one of the twisting cycles 30, that is, in the Xth cycle, there may also be at least one group of aforementioned optical fiber units U whose magnitude relationship of the scalar LU is not adjusted, and this group of aforementioned optical fiber units U is in the twisting cycle 30. In periods 30 other than the Xth period of , the size relationship of the scalar LU is reversed. According to this configuration, the concentration of strain on the specific optical fiber unit U can be more reliably suppressed, and the increase in the maximum transmission loss of the optical fiber assembly 1 can be more reliably suppressed.

又,前述撚合的週期30亦可分別包含:順撚轉部31,複數個間歇固定帶芯線10撚合;及逆撚轉部,複數個間歇固定帶芯線10以和順撚轉部31相反的方向撚合。換言之,複數個間歇固定帶芯線10亦可撚合成SZ狀。根據此構成,可以更確實地抑制應變集中在特定的光纖單元U的情形,而可以更確實地抑制光纖集合體1的最大傳輸損失的增大。Also, the aforementioned twisting cycle 30 may also include: forward twisting part 31, a plurality of intermittent fixed belt core wires 10 are twisted together; direction of twisting. In other words, a plurality of intermittent fixed tape core wires 10 can also be twisted into an SZ shape. According to this configuration, the concentration of strain on the specific optical fiber unit U can be more reliably suppressed, and the increase in the maximum transmission loss of the optical fiber assembly 1 can be more reliably suppressed.

又,本實施形態之光纖電纜100具備上述光纖集合體1、及容置光纖集合體1的外被件110。根據此構成,可以抑制光纖電纜100的最大傳輸損失的增大。Moreover, the optical fiber cable 100 of this embodiment is provided with the said optical fiber assembly 1, and the outer covering material 110 which accommodates the optical fiber assembly 1. As shown in FIG. According to this configuration, an increase in the maximum transmission loss of the optical fiber cable 100 can be suppressed.

又,本實施形態之光纖集合體1的製造方法是以在撚合的週期30的每一個中,存在有純量LT的大小關係對調的至少一組間歇固定帶芯線10之方式,將複數個間歇固定帶芯線10週期性地撚合。根據此構成,可以製造已抑制最大傳輸損失的增大之光纖集合體1。Also, the manufacturing method of the optical fiber assembly 1 of the present embodiment is to combine a plurality of optical fiber assemblies 1 in such a manner that at least one group of intermittently fixed cored wires 10 in which the magnitude relationship of the scalar LT is reversed exists in each of the twisting cycles 30. The intermittent fixed tape core wire 10 is periodically twisted. According to this configuration, it is possible to manufacture the optical fiber assembly 1 in which the increase in the maximum transmission loss is suppressed.

另外,本發明的技術範圍並不限定於前述實施形態,在不脫離本發明的主旨之範圍中可以加上各種變更。In addition, the technical scope of this invention is not limited to the said embodiment, Various changes can be added in the range which does not deviate from the summary of this invention.

例如,光纖集合體1亦可具有PP紗線或吸水性聚合物等夾雜物(未圖示)。該夾雜物亦可設置在相鄰的光纖單元U之間,亦可設置在相鄰的間歇固定帶芯線10之間。在光纖集合體1具有上述夾雜物的情況下,會變得更容易使光纖集合體1的形狀縐彎。從而,可以更確實地抑制光纖集合體1的最大傳輸損失的增大。For example, the optical fiber assembly 1 may have inclusions (not shown) such as PP yarns or water-absorbent polymers. The inclusions can also be arranged between adjacent optical fiber units U, or between adjacent intermittent fixed tape core wires 10 . In the case where the optical fiber assembly 1 has the aforementioned inclusions, it becomes easier to bend the shape of the optical fiber assembly 1 . Accordingly, it is possible to more reliably suppress an increase in the maximum transmission loss of the optical fiber assembly 1 .

又,光纖集合體1所包含的光纖單元U的數量亦可為11個以下,亦可為13個以上。又,各光纖單元U所包含的間歇固定帶芯線10的數量亦可為2個以上且5個以下,亦可為7個以上。又,各間歇固定帶芯線10所包含的光纖11的數量亦可為2個以上且11個以下,亦可為13個以上。In addition, the number of optical fiber units U included in the optical fiber assembly 1 may be 11 or less, or may be 13 or more. In addition, the number of intermittent fixed tape core wires 10 included in each optical fiber unit U may be 2 or more and 5 or less, or may be 7 or more. In addition, the number of optical fibers 11 contained in each intermittent fixed tape core wire 10 may be 2 or more and 11 or less, or may be 13 or more.

又,在任一個週期30或全部的週期30中,亦可不存在有純量LU的大小關係對調的光纖單元U的組。Also, in any one cycle 30 or in all the cycles 30, there may not be a group of optical fiber units U in which the magnitude relationship of the scalar LU is reversed.

又,針對前述實施形態中的外被件110、捲壓件120、抗張力體130、撕裂繩140等之光纖集合體1以外的構成,全部都只是一個例子,而可以適當地變更。例如,亦可將本實施形態之光纖集合體1應用在鬆套管電纜等。又,亦可沒有光纖集合體1以外的上述構成。亦即,光纖集合體1亦可不構成光纖電纜100。In addition, the configurations other than the optical fiber assembly 1 such as the sheath 110, the crimping member 120, the tensile member 130, and the tear cord 140 in the above-mentioned embodiment are all examples and can be changed as appropriate. For example, the optical fiber assembly 1 of this embodiment can also be applied to a loose tube cable or the like. In addition, the above-mentioned configurations other than the optical fiber assembly 1 may not be required. That is, the optical fiber assembly 1 may not constitute the optical fiber cable 100 .

又,當以SZ撚轉構造撚合光纖單元U及間歇固定帶芯線10的情況下,在順撚轉部31及逆撚轉部32中,內層單元Uin的撚轉角(捲繞角)與外層單元Uout的撚轉角(捲繞角)亦可相等,內層單元Uin的週期(撚轉間距)與外層單元Uout的週期(撚轉間距)亦可相等,內層單元Uin與外層單元Uout中的順撚轉部31與逆撚轉部32的邊界B在長邊方向Z上的位置亦可為同等。此外,並不限定於此構成,例如,內層單元Uin與外層單元Uout中的撚轉角、撚轉間距、或邊界B的位置亦可不同。Also, when the optical fiber unit U and the intermittent fixed tape core wire 10 are twisted in an SZ twisting structure, in the forward twisting part 31 and the reverse twisting part 32, the twist angle (winding angle) of the inner layer unit Uin is the same as that of the inner layer unit Uin. The twist angle (winding angle) of the outer unit Uout can also be equal, the cycle (twisting pitch) of the inner layer unit Uin and the cycle (twisting pitch) of the outer layer unit Uout can also be equal, the inner layer unit Uin and the outer layer unit Uout The position of the boundary B between the forward-twisting portion 31 and the reverse-twisting portion 32 in the longitudinal direction Z may be the same. In addition, it is not limited to this configuration, for example, the twist angle, the twist pitch, or the position of the boundary B may be different between the inner unit Uin and the outer unit Uout.

又,光纖集合體1亦可不具有束材20,而是由複數個間歇固定帶芯線10撚合成SZ狀來形成。換言之,間歇固定帶芯線10亦可不形成光纖單元U。即使是此構成,藉由在撚合的週期30的每一個中,存在有純量LT的大小關係對調的至少一組間歇固定帶芯線10,即可以抑制應變集中在特定的間歇固定帶芯線10或光纖11的情形,而可以抑制光纖集合體1的最大傳輸損失的增大。In addition, the optical fiber assembly 1 may not have the bundle material 20, but may be formed by twisting a plurality of intermittent fixed tape core wires 10 into an SZ shape. In other words, the intermittent fixed tape core wire 10 may not form the optical fiber unit U. Even with this configuration, at least one set of intermittent fixed tape core wires 10 in which the magnitude relationship of the scalar LT is reversed exists in each of the twisting cycles 30, so that strain concentration on a specific intermittent fixed tape core wire 10 can be suppressed. Or in the case of the optical fiber 11, an increase in the maximum transmission loss of the optical fiber assembly 1 can be suppressed.

又,在不脫離本發明的主旨之範圍內,可適當地將上述實施形態中的構成要素替換成周知的構成要素,又,亦可適當組合上述實施形態或變形例。In addition, without departing from the gist of the present invention, the constituent elements in the above-described embodiments may be appropriately replaced with known constituent elements, and the above-described embodiments or modified examples may be appropriately combined.

1:光纖集合體 10:間歇固定帶芯線 11:光纖 12:固定部 20:束材 30:撚轉間距(週期) 31:順撚轉部 32:逆撚轉部 41:反轉區域 42:旋轉區域 100:光纖電纜 110:外被件 110a:突起 120:捲壓件 130:抗張力體 140:撕裂繩 B:邊界 G:重心 LT,LU:純量(大小) M:中點 MG,MG1,MG2,MG3,MG4,MG5,MG6,GU:向量 O:中心軸線 P,P/4:尺寸 U:光纖單元 Uin:內層單元 Uout:外層單元 W:帶寬度方向 Z:長邊方向 +Z,-Z:方向 1: Optical fiber assembly 10: Intermittent fixed belt core wire 11: Optical fiber 12: Fixed part 20: bundle material 30: twist pitch (period) 31: Twisting part 32: reverse twisting part 41: Reverse area 42: Rotation area 100: fiber optic cable 110: Outer quilt 110a: protrusion 120: roll pressing 130: Tension body 140: Rip Rope B: Boundary G: center of gravity LT, LU: scalar (size) M: Midpoint MG,MG1,MG2,MG3,MG4,MG5,MG6,GU: vector O: central axis P,P/4: size U: Optical fiber unit Uin: inner unit Uout: outer unit W: Belt width direction Z: Long side direction +Z, -Z: direction

圖1是顯示本發明的實施形態之光纖集合體及光纖電纜的剖面圖。 圖2是顯示本發明的實施形態之光纖單元的立體圖。 圖3是顯示本發明的實施形態之間歇固定帶芯線的立體圖。 圖4A是說明本發明的實施形態之SZ撚轉構造的圖。 圖4B是說明本發明的實施形態之螺旋撚轉構造的圖。 圖5是顯示本發明的實施形態之光纖單元的剖面圖。 圖6是說明向量MG、GU的圖。 圖7是針對本發明的實施例之光纖集合體,顯示純量LU的轉變的圖。 圖8是針對本發明的實施例之光纖集合體,顯示反轉區域中的純量LU的轉變的圖。 圖9是針對本發明的實施例之光纖集合體,顯示旋轉區域中的純量LU的轉變的圖。 Fig. 1 is a cross-sectional view showing an optical fiber assembly and an optical fiber cable according to an embodiment of the present invention. Fig. 2 is a perspective view showing an optical fiber unit according to an embodiment of the present invention. Fig. 3 is a perspective view showing an intermittently fixed tape core wire according to an embodiment of the present invention. Fig. 4A is a diagram illustrating an SZ twist structure according to an embodiment of the present invention. Fig. 4B is a diagram illustrating a helical twist structure according to an embodiment of the present invention. Fig. 5 is a cross-sectional view showing an optical fiber unit according to an embodiment of the present invention. Fig. 6 is a diagram illustrating vectors MG, GU. Fig. 7 is a diagram showing transition of scalar LU for an optical fiber assembly according to an embodiment of the present invention. Fig. 8 is a graph showing the transition of the scalar LU in the inversion region for the optical fiber assembly according to the embodiment of the present invention. Fig. 9 is a graph showing the transition of the scalar LU in the swivel region for the optical fiber assembly according to the embodiment of the present invention.

Claims (7)

一種光纖集合體,具備複數個間歇固定帶芯線,前述複數個間歇固定帶芯線包含複數個光纖以及在長邊方向上間歇地固定前述複數個光纖的複數個固定部, 前述複數個間歇固定帶芯線是週期性地撚合, 在垂直於前述長邊方向的剖面中, 將前述複數個間歇固定帶芯線當中的1個間歇固定帶芯線中之位於兩端的2個前述光纖的中點設為M,將重心設為G,將以前述中點M為起點且以前述重心G為終點的向量設為MG,將前述向量MG的大小設為純量LT時, 在前述撚合的週期的每一個中,存在有前述純量LT的大小關係對調的至少一組前述間歇固定帶芯線。 An optical fiber assembly comprising a plurality of intermittently fixed ribbon cores, the plurality of intermittently fixed ribbon cores including a plurality of optical fibers and a plurality of fixing parts intermittently fixing the plurality of optical fibers in the longitudinal direction, The plurality of intermittent fixed belt core wires are periodically twisted, In a section perpendicular to the aforementioned long-side direction, Assuming that the midpoint of the two aforementioned optical fibers located at both ends of one of the aforementioned plurality of intermittent fixed-band core wires is M, and the center of gravity is G, the aforementioned midpoint M will be used as the starting point and the aforementioned center of gravity will be The vector with G as the end point is set to MG, and when the size of the aforementioned vector MG is set to the scalar LT, In each of the twisting cycles, at least one set of the intermittent fixed tape core wires in which the magnitude relationship of the scalar LT is reversed exists. 如請求項1之光纖集合體,其中前述複數個間歇固定帶芯線形成有複數個光纖單元, 在前述複數個光纖單元的每一個中,前述複數個間歇固定帶芯線當中的至少二個以上的前述間歇固定帶芯線是受到捆束。 The optical fiber assembly as claimed in item 1, wherein the aforementioned plurality of intermittent fixed ribbon core wires form a plurality of optical fiber units, In each of the plurality of optical fiber units, at least two or more of the intermittent fixed tape core wires among the plurality of intermittent fixed tape core wires are bundled. 如請求項2之光纖集合體,其中將針對前述複數個光纖單元當中的一個前述光纖單元所包含的前述複數個間歇固定帶芯線的全部來合成前述向量MG後的向量設為GU,將前述向量GU的大小設為純量LU時, 在前述撚合的週期的每一個中,存在有前述純量LU的大小關係對調的至少一組前述光纖單元。 An optical fiber aggregate as claimed in claim 2, wherein the vector MG synthesized for all of the plurality of intermittent fixed tape cores contained in one of the aforementioned optical fiber units is set to GU, and the aforementioned vector is When the size of GU is set to scalar LU, In each of the twisting cycles, at least one group of the optical fiber units in which the magnitude relationship of the scalar LU is reversed exists. 如請求項2或3之光纖集合體,其中將針對前述複數個光纖單元當中的一個前述光纖單元所包含的前述複數個間歇固定帶芯線的全部來合成前述向量MG後的向量設為GU,將前述向量GU的大小設為純量LU時, 在前述撚合的週期當中的一個即第X週期中,存在有前述純量LU的大小關係不對調的至少一組前述光纖單元, 前述一組光纖單元在前述撚合的週期當中的前述第X週期以外的週期中,前述純量LU的大小關係對調。 An optical fiber assembly as claimed in claim 2 or 3, wherein the vector MG synthesized for all of the aforementioned plurality of intermittent fixed tape cores included in one of the aforementioned plurality of optical fiber units is set to GU, and When the size of the aforementioned vector GU is set to the scalar LU, In one of the aforementioned twisting cycles, that is, in the Xth cycle, there is at least one group of the aforementioned optical fiber units in which the size relationship of the aforementioned scalar LU is not adjusted, In the period other than the X-th period among the twisting periods of the aforementioned group of optical fiber units, the magnitude relationship of the aforementioned scalar LU is reversed. 如請求項1至4中任一項之光纖集合體,其中前述撚合的週期分別包含:順撚轉部,前述複數個間歇固定帶芯線撚合;及逆撚轉部,前述複數個間歇固定帶芯線以和前述順撚轉部相反的方向撚合。The optical fiber assembly according to any one of Claims 1 to 4, wherein the twisting period includes respectively: a forward twisting part, the aforementioned plurality of intermittently fixed core wires are twisted; and a reverse twisting part, the aforementioned plurality of intermittently fixed The cored wire is twisted in the opposite direction to that of the aforementioned forward twist. 一種光纖電纜,具備: 如請求項1至5中任一項之光纖集合體;及 外被件,容置前述光纖集合體。 A fiber optic cable having: An optical fiber assembly according to any one of Claims 1 to 5; and The outer jacket accommodates the aforementioned optical fiber assembly. 一種光纖集合體的製造方法,是製造光纖集合體之光纖集合體的製造方法,前述光纖集合體具備複數個間歇固定帶芯線,前述複數個間歇固定帶芯線包含複數個光纖以及在長邊方向上間歇地固定前述複數個光纖的複數個固定部, 在垂直於前述長邊方向的剖面中, 將前述複數個間歇固定帶芯線當中的1個間歇固定帶芯線中之位於兩端的2個前述光纖的中點設為M,將重心設為G,將以前述中點M為起點且以前述重心G為終點的向量設為MG,將前述向量MG的大小設為純量LT時, 以在撚合的週期的每一個中,存在有前述純量LT的大小關係對調的至少一組前述間歇固定帶芯線之方式,將前述複數個間歇固定帶芯線週期性地撚合。 A method for manufacturing an optical fiber assembly, which is a method for manufacturing an optical fiber assembly, wherein the optical fiber assembly includes a plurality of intermittently fixed tape cores, the plurality of intermittently fixed tape cores include a plurality of optical fibers and a plurality of fixing parts intermittently fixing the aforementioned plurality of optical fibers, In a section perpendicular to the aforementioned long-side direction, Assuming that the midpoint of the two aforementioned optical fibers located at both ends of one of the aforementioned plurality of intermittent fixed-band core wires is M, and the center of gravity is G, the aforementioned midpoint M will be used as the starting point and the aforementioned center of gravity will be The vector with G as the end point is set to MG, and when the size of the aforementioned vector MG is set to the scalar LT, The plurality of intermittent fixed tape core wires are periodically twisted so that at least one group of the intermittent fixed tape core wires in which the scalar LT is reversed exists in each twisting cycle.
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