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Tightly packaged fiber, and dual-core indoor cable and processing method thereof

A technology of tightly wrapping optical fibers and fiber cores, applied in the direction of fiber mechanical structure, etc., can solve the problems that cannot be used alone, mechanical properties cannot be protected by optical fibers, and application limitations of tightly wrapped optical fibers, etc., to achieve the effects of low cost, light weight and small size

Inactive Publication Date: 2011-01-26
TONGDING INTERCONNECTION INFORMATION CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Since the outermost layer of the tight-packed optical fiber is soft polyvinyl chloride or polyester plastic, the protective layer composed of it cannot fundamentally protect the optical fiber in terms of mechanical properties, that is, it cannot be used alone, and an additional tensile material ( Materials such as aramid fiber) and outer sheath for mechanical and environmental protection can be used, which limits the application of tight-packed optical fibers to certain extent

Method used

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  • Tightly packaged fiber, and dual-core indoor cable and processing method thereof
  • Tightly packaged fiber, and dual-core indoor cable and processing method thereof
  • Tightly packaged fiber, and dual-core indoor cable and processing method thereof

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing, preferred specific embodiment of the present invention is described:

[0025] Such as figure 1 The shown tight-clad optical fiber consists of an optical fiber core 11 at the center, a cladding 12 coated on the periphery of the core 11, a primary coating 13 coated on the periphery of the cladding 12, and an extruded primary coating 13 outside the secondary coating layer 14 composition. Wherein, the fiber core 11 can be a single-mode fiber or a multimode fiber, both of which have an outer diameter of 125 μm, a single-mode fiber core diameter of 8.3 μm, and a multimode fiber core diameter of 50 or 62.5 μm . The primary coating layer 13 is coated with UV curable acrylic resin; the secondary coating layer 14 is made of polyvinyl fluoride.

[0026] The polyvinyl fluoride is also called ethylene-tetrafluoroethylene copolymer, commonly known as: F-40. Its English name is ETFE (ethylene-tetra-fluoro-ethylene). Polyvinyl fluori...

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Abstract

The invention relates to a tightly packaged fiber, and a dual-core cable using the tightly packaged fiber and a processing method thereof. The tightly packaged fiber consists of a single-mode or multi-mode fiber core, a cladding layer clad on the circumference of the fiber core, a primary coating layer coated on the circumference of the cladding layer and a secondary coated layer tightly sleeved on the circumference of the primary coating layer, wherein the secondary coated layer is a polyvinyl fluoride protection layer. By taking polyvinyl fluoride which has relatively high chemical corrosion resistance, creep resistance and compressive strength and relatively wide bearable temperature range as the secondary coated layer of the tightly packaged fiber, the tightly packaged fiber can have enough mechanical and environmental protection capability and can be independently used. The dual-core cable using the tightly packaged fiber, which is processed by the method has the advantages of small volume, light weight, stable performance and low cost, is suitable for indoor comprehensive wiring and can be used as internal connection wires of various optical devices, optical modules and optical distribution frames.

Description

technical field [0001] The invention relates to a communication optical cable, in particular to an indoor optical cable and a manufacturing method thereof. Background technique [0002] Traditional twin-core optical cables are mainly used for indoor integrated wiring and communication equipment interconnection lines. In recent years, in FTTH projects, the user's indoor wiring is the most complicated link, and there are many factors to consider, not only to ensure the safety of the line, but also to take into account the indoor appearance, and at the same time to facilitate the construction. Most of the existing twin-core optical cables are leather optical cables, whose cross-section is 8-shaped, and the strengthening member is made of FRP, which is located at the center of the two circles, and the optical fiber is located at the geometric center of the 8-shaped. The standard drop cable size is 2.0mm×3.1mm. [0003] With the continuous development of access network and FTTH...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
Inventor 张海军陈炳炎
Owner TONGDING INTERCONNECTION INFORMATION CO LTD
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