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Mixed optical cable with sensing and communication function and producing method thereof

A technology of communication optical cable and communication function, which is applied in the field of communication sensing, can solve the problems of easy damage in laying and use, short effective service life, poor protection performance, etc., and achieve reasonable and simple production method, high working stability and protection performance strong effect

Active Publication Date: 2005-04-27
YANGTZE OPTICAL FIBRE & CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing sensing optical fiber is only coated with a layer of protective film on its outer surface, which is not only difficult to lay, but also easily damaged during laying and use, and its own protection performance is poor, so it is not suitable for working in harsh conditions and environments. The effective service life is short, and the cost of laying is relatively high

Method used

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  • Mixed optical cable with sensing and communication function and producing method thereof
  • Mixed optical cable with sensing and communication function and producing method thereof
  • Mixed optical cable with sensing and communication function and producing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example as figure 1 As shown, the communication optical cable is composed of a loose-tube layer-stranded optical cable core covered with an outer sheath. The loose-tube layer-stranded optical cable core includes a central strength member 4, which is stranded in the circumferential direction of the central strength member and contains the optical fiber 1. The loose tube 2 and the filling rope 5, the loose tube is filled with fiber paste 3, and the loose tube is provided with water-blocking parts or filled with water-blocking material 6, and then longitudinally wrapped with a metal tape 7 to form a loose-tube layer twisted optical cable Core, the outside of the cable core is an outer sheath 8; on one or both sides of the outer sheath, a sensing optical cable is arranged, and the sensing optical cable and the outer sheath are connected into one body, and the additional set can be processed by extrusion molding through one-time molding technology. part of the sensor cable. ...

Embodiment 2

[0019] Example two such as figure 2 As shown, it is characterized in that the cable core of the communication optical cable is a loose tube stranded optical fiber ribbon structure, that is, the loose tube 2 of the cable core is covered with a superimposed optical fiber ribbon 12, and a sensor sensor is connected to one side of the communication optical cable. The optical cable, the sheath 11 of the sensing optical cable is integrated with the outer sheath 8 of the communication optical cable. The sheath can be elliptical, and a sensing optical fiber 10 and a strengthening member 9 are installed in the sheath, wherein the sensing optical fiber is located On the outside of the sheath, the strength member is located on the side close to the communication optical cable. Other structures are the same as the previous embodiment.

Embodiment 3

[0020] Embodiment three such as image 3 As shown, the cable core of the communication optical cable is a central bundle tube structure, including a loose tube 2 containing optical fibers, the loose tube is filled with fiber paste 3, and a water-blocking layer 13 is arranged outside the loose tube, and the water-blocking layer is longitudinally covered with metal. Belt 7; the outer sheath 8 is covered outside the longitudinal metal belt, and strengthening elements 14 are installed on both sides of the outer sheath, and a sensing optical cable is respectively extruded on the outer sheath outside the two strengthening elements, and the sensing The section of the sheath 11 of the optical cable is in the shape of an arc ear, and the sensing optical fiber 10 is laid in the sheath.

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Abstract

The present invention relates to one kind one mixed optical cable with communication function and sensing function and its making process. The mixed optical cable includes communication cable comprising cable core and protecting jacket and characterized sensing cable set outside the protecting jacket of the communication cable and comprising sensing fiber and its protecting sheath. During the making process, the communication cable core and the sensing fiber are integrated inside the same outer sheath, or the sensing cable is wound spirally onto the outer sheath of the communication cable. The present invention has the advantages of perfect functions, high protecting performance, stable operation, compact structure, etc.

Description

technical field [0001] The invention relates to a hybrid optical cable with sensing function and communication function and a manufacturing method of the optical cable, belonging to the technical field of communication sensing. Background technique [0002] Communication optical cables have been widely used in transmission systems in the field of communications due to their enormous information transmission capacity. However, existing communication optical cables only have the function of communication transmission without sensing function. In addition, sensing optical fibers that can be used as sensing elements have appeared in recent years. The sensing optical fibers have the characteristics of continuous long-distance sensing and high sensitivity, and can be used in some flammable and explosive occasions such as oil pipelines. When the oil pipeline is damaged by man-made or geological disasters and abnormal conditions such as deformation or leakage occur, the sensing opt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/44H04B10/25
Inventor 熊壮万冰罗中平
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD
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