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Miniature full-optical fiber F-P acceleration sensor and preparation thereof

An acceleration sensor and all-fiber technology, which is applied in the direction of acceleration measurement using inertial force, can solve the problems of sensor miniaturization and high precision, and achieve simple production, strong resistance to harsh environments, and fast response fast effect

Inactive Publication Date: 2009-02-18
CHONGQING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to its high precision and wide application range, the optical fiber accelerometer based on interference technology has always been a research project, but it has not been well solved in terms of sensor miniaturization and high precision.

Method used

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  • Miniature full-optical fiber F-P acceleration sensor and preparation thereof
  • Miniature full-optical fiber F-P acceleration sensor and preparation thereof
  • Miniature full-optical fiber F-P acceleration sensor and preparation thereof

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Embodiment Construction

[0032] The miniature all-fiber FP acceleration sensor disclosed in the present invention includes: ordinary single-mode fiber 1, hollow-core fiber 2, solid-core photonic crystal fiber 3. The two ends of the hollow-core fiber 2 are connected to the ordinary single-mode fiber 1 and the solid-core photonic crystal fiber, respectively. 3 Fusion splicing, the cavity part of the hollow-core fiber 2 constitutes an FP interference cavity, in which: the solid-core photonic crystal fiber 3 is in the axial direction, and a number of sector-shaped through holes that are concentric with the cross-section of the solid-core photonic crystal fiber 3 are processed 3-3 , The partition of each fan-shaped through hole 3-3 forms a vibrating arm 3-1, all the fan-shaped through holes 3-3 and the vibrating arm 3-1 together form a circular ring shape, and the part surrounded by the circular ring forms a vibrating block 3-2.

[0033] The FP interference cavity will form two reflective surfaces 4 on the two...

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Abstract

The invention discloses a miniature full optical fiber F-P acceleration transducer, which comprises: a common single mode optical fiber, a hollow-core optical fiber and a solid-core photon crystal fiber; and the common single mode optical fiber, the hollow-core optical fiber and the solid-core photon crystal fiber are sequentially connected in fusing way. The acceleration transducer is characterized in that: a plurality of sector via holes which are concentric with the cross section of the solid-core photon crystal fiber are formed at the axis direction of the solid-core photon crystal fiber, the separation parts of each sector via hole form a shaking arm, a ring shape is formed by all sector via holes and the shaking arm together, and a shaking block is formed by the part which is surrounded by the ring shape. The invention also discloses a producing method of the miniature full optical fiber F-P acceleration transducer. The acceleration transducer has the beneficial effects that: the transducer is miniaturized through full optical fiber and can bear high temperature, the operation is simple, the sensitivity is high, the response speed is swift and the hard environment endurance is strong.

Description

Technical field [0001] The invention relates to an optical fiber sensing technology, in particular to a miniature all-fiber F-P acceleration sensor and a manufacturing method thereof. Background technique [0002] Acceleration is one of the very important parameters in the fields of physics and engineering. Acceleration measurement has a wide range of applications in many fields, such as missile guidance, aircraft navigation, satellite attitude control, and measurement of low-frequency acceleration of the International Space Station in the aerospace field; in the automotive industry, in order to determine the car’s own Buffer performance, mainly used for suspension system, pre-brake / traction system, driving system and safety system; in power plants, it can realize the remote measurement of large electrical equipment, such as the measurement of internal units such as engines and transformers. Therefore, the measurement of acceleration has important practical application value, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01P15/03
Inventor 朱涛邓明饶云江刘敏
Owner CHONGQING UNIV
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