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A stress-responsive composite optical cable

A composite optical cable and stress technology, applied in the direction of fiber mechanical structure, etc., can solve the problems of easy influence of optical cable, easy aging and damage of optical cable, interruption of communication signal, etc. Effect

Active Publication Date: 2019-09-17
江苏华脉光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complexity of the places and environments where optical cables are used, especially in harsh weather or outdoor environments, optical cables exposed to the environment or buried deep in the ground are easily affected, and ordinary optical cables are more likely to be affected in the case of strong electromagnetic interference. Even the communication signal is interrupted, and the optical cable is also prone to aging and damage

Method used

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  • A stress-responsive composite optical cable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] like figure 1 As shown, a stress-responsive composite optical cable includes a strained optical fiber 1 with a protective layer, a strength member, a filler between the optical fiber and the strength member, a sheath covering the strained optical fiber 1, the strength member and the filler, and a coating An electromagnetic shielding layer and a weather-resistant layer outside the sheath layer, wherein the protective layer of the strained optical fiber 1 includes three layers of an inner protective layer 2, an intermediate protective layer 3 and an outer protective layer 4, and the inner protective layer 2 has a thickness of 30-40 μm polyimide coating, the middle protective layer 3 is a polyaryletherketone-polysiloxane / polyimide copolymer coating with a thickness of 1-2mm, and the outer protective layer 4 is A thermotropic liquid crystal copolyester PET / PHB coating with a thickness of 10-20 μm; the sheath layer includes an inner sheath layer 5 and an outer sheath layer 6...

Embodiment 2

[0029] like figure 1 As shown, a stress-responsive composite optical cable includes a strained optical fiber 1 with a protective layer, a strength member, a filler between the optical fiber and the strength member, a sheath covering the strained optical fiber 1, the strength member and the filler, and a coating An electromagnetic shielding layer and a weather-resistant layer outside the sheath layer, wherein the protective layer of the strained optical fiber 1 includes three layers of an inner protective layer 2, an intermediate protective layer 3 and an outer protective layer 4, and the inner protective layer 2 has a thickness of 30-40 μm polyimide coating, the middle protective layer 3 is a polyaryletherketone-polysiloxane / polyimide copolymer coating with a thickness of 1-2mm, and the outer protective layer 4 is A thermotropic liquid crystal copolyester PET / PHB coating with a thickness of 10-20 μm; the sheath layer includes an inner sheath layer 5 and an outer sheath layer 6...

Embodiment 3

[0032] like figure 1 As shown, a stress-responsive composite optical cable includes a strained optical fiber 1 with a protective layer, a strength member, a filler between the optical fiber and the strength member, a sheath covering the strained optical fiber 1, the strength member and the filler, and a coating An electromagnetic shielding layer and a weather-resistant layer outside the sheath layer, wherein the protective layer of the strained optical fiber 1 includes three layers of an inner protective layer 2, an intermediate protective layer 3 and an outer protective layer 4, and the inner protective layer 2 has a thickness of 30-40 μm polyimide coating, the middle protective layer 3 is a polyaryletherketone-polysiloxane / polyimide copolymer coating with a thickness of 1-2mm, and the outer protective layer 4 is A thermotropic liquid crystal copolyester PET / PHB coating with a thickness of 10-20 μm; the sheath layer includes an inner sheath layer 5 and an outer sheath layer 6...

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Abstract

The invention relates to a stress-responsive composite optical cable, comprising a strained optical fiber with a protective layer, a strength member, a filler between the The electromagnetic shielding layer and the weather-resistant layer outside the jacket, wherein the protective layer of the strained optical fiber includes three layers: an inner protective layer, a middle protective layer and an outer protective layer, the inner protective layer is a polyimide coating, and the middle The protective layer is a polyaryletherketone-polysiloxane / polyimide copolymer coating, and the outer protective layer is a thermotropic liquid crystal copolyester PET / PHB coating; the sheath layer includes an inner sheath layer and an outer sheath layer, the inner sheath layer is a ceramic fiber braided layer, the outer sheath layer is a flame-resistant material layer, and the electromagnetic shielding layer is an inner layer of a graphene film and an outer layer of a sputtered gold-plated film. The stress-responsive composite optical cable of the invention is a long-distance passive distributed system, has good durability in severe weather or environment, and can resist strong electromagnetic interference at the same time.

Description

technical field [0001] The invention relates to the field of optical fibers, more specifically, to a stress-responsive composite optical cable. Background technique [0002] Optical fiber is a composite material consisting of an inner quartz portion combined with an outer coating. It is not only widely used in conventional communication fields, but also in other high-tech fields such as sensing, measurement, control, and data acquisition, such as mining industry, aerospace industry, military, oil and gas, and high-temperature medical applications. Based on the principle of optical fiber sensing technology, the optical fiber early warning system uses optical fiber as a sensor to test changes in stress and / or temperature for early warning. [0003] The distributed optical fiber early warning system based on coherent Rayleigh scattering technology obtains and locates external vibration signals by detecting the intensity of backscattered light scattered from various parts of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/44
Inventor 叶建胜刘小兵孙国青李国帅叶红亮
Owner 江苏华脉光电科技有限公司