Optical fiber SPR curvature sensor with direction recognition function and using and manufacturing method

A curvature sensor and direction recognition technology, which is applied to convert sensor output, use optical devices to transmit sensor components, clad fibers, etc., can solve the problems of long production time, complex process, high cost, etc.

Pending Publication Date: 2020-07-28
CHONGQING THREE GORGES UNIV
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Problems solved by technology

[0010] In view of this, the object of the present invention is to provide a high structural strength, strong bending performance and direction-identifiable optical fiber SPR curvature sensor and its pr

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  • Optical fiber SPR curvature sensor with direction recognition function and using and manufacturing method
  • Optical fiber SPR curvature sensor with direction recognition function and using and manufacturing method
  • Optical fiber SPR curvature sensor with direction recognition function and using and manufacturing method

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[0059] The following describes the implementation of the present invention through specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments are only illustrative to illustrate the basic concept of the present invention. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0060] Among them, the drawings are only used for exemplary description, and they are only schematic diagrams rather than physical drawings, and cannot be understood as...

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Abstract

The invention belongs to the field of optical fiber surface plasmon resonance (SPR) sensing, and mainly relates to an optical fiber SPR curvature sensor with a direction recognition function and a using and manufacturing method, which can perform curvature measurement, bending direction judgment and multi-point simultaneous measurement based on a wavelength division multiplexing technology throughtwo parameters of resonance wavelength and resonance valley depth. A semi-circular surface SPR sensing film is plated on one side of a plastic cladding optical fiber core, and a plastic cladding anda coating layer are remodeled and restored by using a low-refractive-index coating adhesive outside the plastic cladding optical fiber core; compared with a curvature sensor based on optical fiber interference and a grating mechanism, the optical fiber SPR curvature sensor provided by the invention has the advantages that the structure is novel and stable, the bending performance is high, detection can be realized only by using a broadband incoherent light source and a visible light band spectrograph, and the like; the sensor and the method have good application prospects in the fields of geological environment monitoring of three gorges reservoir area landslides, reservoir banks and the like, building structure health monitoring and the like.

Description

Technical field [0001] The invention belongs to the field of optical fiber surface plasmon resonance (SPR) sensing, and relates to a direction-recognized optical fiber SPR curvature sensor and a manufacturing method. Background technique [0002] Curvature can reflect the characteristics of materials and structural mechanics. It is the basis for evaluating the state of machinery, bridges and building structures. The health of the structure can be judged by obtaining the curvature information of the structure. Therefore, curvature measurement technology is used in the field of mechanical engineering and structural health monitoring. Particularly important. Compared with electrical sensors, optical fiber sensors have many advantages such as anti-electromagnetic interference, small size, low transmission loss, easy to bend, and suitable for buried distribution measurement. This makes optical fiber curvature sensors have broad research and development prospects and has attracted a wi...

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Application Information

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IPC IPC(8): G01B11/24G01D5/353G02B6/02
CPCG01B11/24G01D5/35354G02B6/02033
Inventor 魏勇胡江西刘春兰吴萍李玲玲赵晓玲苏于东李波
Owner CHONGQING THREE GORGES UNIV
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