Single-core optical cable for indoor and outdoor jumper wires and preparing method thereof

A single-core optical cable and jumper technology, which is applied in the direction of fiber mechanical structure, etc., can solve the problems of high cost, unsatisfactory waterproof performance, flame retardancy performance, and unsatisfactory bending and tensile strength, so as to prevent damage and achieve good performance. The effect of bending properties

Active Publication Date: 2014-03-05
ZHEJIANG SHIP ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The optical cable includes 2-4 subunits, and the cost is relatively high. Moreover, the bending and tensile strength achieved by the optical cable cannot meet the long-distance, outdoor low-temperature environment, repeated dragging and use, and its water resistance, flame retardancy and other properties are not satisfactory. not ideal

Method used

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  • Single-core optical cable for indoor and outdoor jumper wires and preparing method thereof
  • Single-core optical cable for indoor and outdoor jumper wires and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] First, select the G.657 bend-insensitive optical fiber, and then use an extruder to coat the outer surface of the optical fiber with LSZH material with a pH weight of 4.8, a conductivity weight of 9.2 μs / mm, and a minimum light transmittance of 75%. The tight cladding layer with a thickness of 0.3mm is wrapped around the outer surface of the tight cladding layer with a second water-blocking reinforcement layer with a thickness of 0.1mm made of water-blocking aramid yarn. Surface coating PH weighted value is 4.8, conductivity weighted value is 9.2μs / mm, the minimum light transmittance is 75% LSZH material made of 0.45mm thick inner sheath, the outer surface of the inner sheath is wrapped around The first water-blocking reinforcing layer with a thickness of 0.15mm is made of water glass yarn, and finally, the outer surface of the first water-blocking reinforcing layer is coated with a PE material with an oxygen index of 33 through an extruder and an outer layer with a thic...

Embodiment 2

[0029] First, select the G.657 bend-insensitive optical fiber, and then use an extruder to coat the outer surface of the optical fiber with a PVC material with a pH weighted value of 5.0, a conductivity weighted value of 8.5 μs / mm, and a minimum light transmittance of 78%. The tight cladding layer with a thickness of 0.25 mm is wrapped around the outer surface of the tight cladding layer to form a second water-blocking reinforcement layer with a thickness of 0.15 mm, and the outer surface of the second water-blocking reinforcement layer is formed by an extruder. Coating PH weighted value is 5.2, conductivity weighted value is 8.8μs / mm, and the inner sheath is made of TPU material with a minimum light transmittance of 80% and a thickness of 0.35mm. The outer surface of the inner sheath is wrapped to block water The first water-blocking reinforcing layer with a thickness of 0.2mm is made of glass yarn, and finally the outer surface of the first water-blocking reinforcing layer is...

Embodiment 3

[0031]First, select the G.657 bend-insensitive optical fiber, and then use an extruder to coat the outer surface of the optical fiber with Nylon material with a pH weighted value of 5.0, a conductivity weighted value of 9.0 μs / mm, and a minimum light transmittance of 79%. A tight cladding layer with a thickness of 0.35mm is wrapped around the outer surface of the tight cladding layer to make a second water-blocking reinforcing layer with a thickness of 0.2mm, and the second water-blocking reinforcing layer is formed by an extruder. The surface coating has a PH weighted value of 5.3, an electrical conductivity weighted value of 8.5μs / mm, and a minimum light transmittance of 82%. The inner sheath is made of PPO material with a thickness of 0.55mm, and the outer surface of the inner sheath is wrapped to block water. The first water-blocking reinforced layer with a thickness of 0.2mm is made of glass yarn, and finally the outer surface of the first water-blocked reinforced layer is...

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Abstract

The invention relates to a single-core optical cable for indoor and outdoor jumper wires and a preparing method of the single-core optical cable for the indoor and outdoor jumper wires. The single-core optical cable comprises an optical fiber, a tightly-wrapping layer, a second water-resistant reinforcing layer, an inner protection layer, a first water-resistant reinforcing layer and an outer protection layer. The method for preparing the single-core optical cable comprises the steps that a curved insensitive optical fiber material is selected and manufactured into the optical fiber; the outer surface of the optical fiber is wrapped in the tightly-wrapping layer through a plastic extruding machine; the outer surface of the tightly-wrapping layer is wrapped by the second water-resistant reinforcing layer; the outer surface of the second water-resistant reinforcing layer is wrapped in the inner protection layer through the plastic extruding machine; the outer surface of the inner protection layer is wrapped by the first water-resistant reinforcing layer; the outer surface of the first water-resistant reinforcing layer is wrapped in the outer protection layer through the plastic extruding machine, and therefore the single-core optical cable for the indoor and outdoor jumper wires is obtained. The single-core optical cable for the indoor and outdoor jumper wires is greatly improved in structure and can be generally used in cooperation with regular jumper wire parts so that the good generality of the single-core optical cable can be achieved, the using requirements for the long distance, an outdoor low-temperature environment and repeatedly dragging can be satisfied, a fire source and water vapor can be effectively blocked and the damage caused by rodents can be prevented.

Description

technical field [0001] The invention relates to a single-core optical cable and a preparation method thereof, in particular to a single-core optical cable for indoor and outdoor jumpers and a preparation method thereof. Background technique [0002] With the development of optical communication technology, light, as a medium for transmitting signals, appears in more fields, focusing on optical fiber metropolitan area network and optical fiber access network. Under the condition of vigorously promoting the construction of FTTx (fiber optic access), on the one hand, it has driven the continuous growth of the demand for optical fiber and cable in my country, and on the other hand, it has also put forward higher requirements for the performance of optical fiber and cable. The "last mile" in FTTx is generally implemented through patch cords. In many cases, especially in the industrial field, the environment of optical fiber cables for jumpers is relatively complex, requiring lon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44
Inventor 蒋建春
Owner ZHEJIANG SHIP ELECTRONICS TECH
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