Preparation process of sapphire photonic crystal fiber grating ultra-high temperature distributed sensor

A photonic crystal fiber, distributed sensor technology, applied in the direction of cladding fiber, optical waveguide light guide, instruments, etc., can solve high temperature instability, weak anti-electromagnetic interference, low (high temperature limit resistance temperature is generally about 1300 ℃) , the short-term ultra-high temperature limit withstand temperature is only 1600 ℃, reducing the temperature test accuracy and other problems, to achieve excellent high temperature resistance and anti-electromagnetic interference characteristics, improve structural stability and mechanical strength, improve the effect of mechanical structural strength
CN108106751AActive Publication Date: 2018-06-01武汉从时光瑞光电技术有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
武汉从时光瑞光电技术有限公司
Publication Date
2018-06-01

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Abstract

The invention provides a preparation process of a sapphire photonic crystal fiber grating ultra-high temperature distributed sensor. The preparation process comprises a first step of producing a sapphire special material rod body and a sleeve by virtue of a sapphire special material tube rod preparation process and technology; a second step of producing a sapphire photonic crystal special opticalfiber based on the sapphire special material rod body and the sleeve provided in the first step through the photonic crystal special optical fiber preparation process and technology, a third step of producing a distributed fiber grating sensing unit in the sapphire photonic crystal special optical fiber based on the sapphire photonic crystal special optical fiber provided in the second step through ultra-fast femtosecond laser engraving fiber grating preparation process and technology, and a fourth step of producing the sapphire photonic crystal fiber grating ultra-high temperature distributedsensor by packing and protecting the sapphire photonic crystal special optical fiber with the distributed fiber grating sensing unit provided in the third step through high temperature packaging based on a ceramic casing pipe with boron carbide high-temperature structure and the high-temperature sensor packaging technology based on sapphire capillary tubes.
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Description

technical field

[0001] The invention relates to the field of optical fiber sensing, in particular to a preparation process of a sapphire photonic crystal fiber grating ultra-high temperature distributed sensor. Background technique

[0002] In 2016, among the top 100 projects and projects planned to be implemented in China's 13th Five-Year Plan, aero-engines and gas turbines ranked first, which reflects the country's great importance to the aero-engine industry. An advanced engine determines the performance of military aircraft such as fighter jets to a certain extent, and aero-engines have always been the bottleneck restricting domestic military aircraft. The aero-engines and gas turbines are placed in such an important position, which shows that the country is determined to solve aviation power. ill.

[0003] When a high-performance aero-engine is running, the airflow temperature after the combustion chamber and the surface temperature of the high-temperature rotating hot...

Claims

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