A kind of temperature sensor based on graphene micro-nano fiber and preparation method thereof

A technology of temperature sensor and micro-nano optical fiber, which is applied to thermometers, thermometers, instruments, etc. that change physically/chemically, can solve the problems of low detection accuracy and sensitivity, slow response speed of optical fiber temperature sensors, etc., and achieve improved sensitivity and light wave absorption. Reduced effect

Active Publication Date: 2022-07-12
YANSHAN UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to provide a temperature sensor based on graphene micro-nano optical fiber and its preparation method to solve the problems of slow response speed, low detection accuracy and low sensitivity of traditional optical fiber temperature sensors

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  • A kind of temperature sensor based on graphene micro-nano fiber and preparation method thereof
  • A kind of temperature sensor based on graphene micro-nano fiber and preparation method thereof
  • A kind of temperature sensor based on graphene micro-nano fiber and preparation method thereof

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Embodiment Construction

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] The purpose of the present invention is to provide a temperature sensor based on graphene micro-nano fiber and a preparation method thereof, which can improve the sensitivity of the temperature sensor.

[0036] In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and...

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Abstract

The invention discloses a temperature sensor based on graphene micro-nano optical fiber and a preparation method thereof. A large core diameter step multimode optical fiber with a cladding diameter of 125 μm and a core diameter of 105 μm is heated, melted and tapered by oxyhydrogen flame to form a taper region. , transfer the single-layer graphene film to the sensing cone region of the multimode fiber, and prepare the temperature sensor of the graphene micro-nano fiber. The invention realizes full-fiber sensing and detection of temperature by combining single-layer graphene with large-core-diameter multi-mode micro-nano fiber, and utilizes the thermal-induced light absorption effect of graphene, and converts temperature changes into optical signals through graphene. changes, improving the sensitivity of the temperature detection device.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, in particular to a temperature sensor based on graphene micro-nano optical fiber and a preparation method thereof. Background technique [0002] The cladding of a standard fiber is usually 125 μm, and the transmission mode of light passing through the fiber is different depending on the diameter of the fiber core. In general, the transmitted light field is confined near the fiber core, but by processing the fiber by heating, melting and tapering with an oxyhydrogen flame, a part of the light field originally bound to the fiber core can be leaked in the form of an evanescent field. outside the fiber cladding. This method can enhance the interaction between the external environment and the optical field in the optical fiber, thereby fabricating a high-sensitivity optical fiber sensing device. [0003] Existing optical fiber temperature sensors usually use the temperature-sensitive c...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/324G01K11/3206
CPCG01K11/32
Inventor 付广伟付兴虎王碧霖王晓愚毕卫红
Owner YANSHAN UNIV
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