Arborescent sensing optical cable

A sensing optical cable and tree-like technology, applied in the direction of fiber mechanical structure, etc., can solve the problems of light energy loss, interference, waste of equipment and optical cables, etc.

CN102998758AInactive Publication Date: 2013-03-27SHENZHEN POWER SUPPLY BUREAU +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2013-03-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an arborescent sensing optical cable. The arborescent sensing optical cable comprises a low refractive index wrapping layer and a plurality of high refractive index fiber cores which are connected together, the plurality of high refractive index fiber cores which are connected together comprise a main optical fiber core and a plurality of branch optical fiber cores, and the main optical fiber core and the branch optical fiber cores are arborescently welded at certain node positions according to application requirements. The arborescent sensing optical cable can be applied to multiple branches without extra devices, optical cables are saved, energy loss and superimposed interference of the arborescent sensing optical cable are smaller than those of a coupler or a branching unit which is used for branching, and simultaneously the problems that the core diameter of the optical cable is mismatched during fusion and the concentricity of the fiber cores and the wrapping layer is poor are solved.
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Description

technical field

[0001] The invention relates to the field of transmission optical cables, in particular to a sensing optical cable. Background technique

[0002] Sensing optical cables are mainly used in transportation, construction, electric power, coal mines, petrochemicals, dams and other industries, and their functions are for signal transmission and sensing. The working principle of the optical cable in the prior art is: the refractive index of the optical fiber core and the outer coating of the optical cable are different, so that the light is fully emitted in the optical cable, and the information is transmitted by modulating the information in the optical signal of the total reflection. transmission and sensing.

[0003] The optical cables of the prior art have the following deficiencies in practical application: 1. Multiple sets of equipment need to be used when being applied to tree-shaped branch roads, resulting in waste of equipment and optical cables; 2. If cou...

Examples

Embodiment 1

[0013] figure 1 It is a structural diagram of an embodiment of a tree sensing optical cable provided by the present invention. Such as figure 1 As shown, the present embodiment constructs a tree-shaped sensing optical cable, including a low-refractive-index cladding layer 2 and a plurality of high-refractive-index cores 1 connected together, and the multiple high-refractive-index cores connected together include The main optical fiber core 3 and multiple branch optical fiber cores, the main optical fiber core 3 and the branch optical fiber cores are fusion-bonded at certain node positions in a tree shape according to application requirements.

[0014] The multiple high-refractive-index fiber cores connected together are fiber cores that are easily fused together, and have little influence on the wire cores during fusion.

[0015] The multiple high-refractive-index fiber cores connected together are different in material and refractive index, and are easy to calibrate positio...