Temperature sensor based on graphene micro-nano optical fiber and preparation method of temperature sensor

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

Active Publication Date: 2020-04-10
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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  • Temperature sensor based on graphene micro-nano optical fiber and preparation method of temperature sensor
  • Temperature sensor based on graphene micro-nano optical fiber and preparation method of temperature sensor
  • Temperature sensor based on graphene micro-nano optical fiber and preparation method of temperature sensor

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Embodiment Construction

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035] The purpose of the present invention is to provide a graphene micro-nano fiber-based temperature sensor and its preparation method, 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 comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] The ...

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Abstract

The invention discloses a temperature sensor based on a graphene micro-nano optical fiber and a preparation method of the temperature sensor. The preparation method of the temperature sensor comprisesthe steps of carrying out oxyhydrogen flame heating fused tapering on a large-core-diameter step multimode optical fiber with the cladding diameter of 125 microns and the fiber core diameter of 105 microns to form a taper region, and transferring a single-layer graphene thin film to a sensing taper region of the multimode optical fiber to prepare the temperature sensor of the graphene micro-nanooptical fiber. According to the preparation method, the single-layer graphene is combined with the large-core-diameter step multimode micro-nano optical fiber, the thermotropic light absorption effectof the graphene is utilized to realize the all-fiber sensing detection of the temperature, and the temperature change is converted into the change of an optical signal by means of the graphene, so that the sensitivity of the temperature detection device is improved.

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 different fiber core diameters lead to different modes of light transmission through the fiber. In general, the transmitted light field is limited near the fiber core, but by heating and melting the optical fiber with a hydrogen-oxygen flame, a part of the light field that was originally confined to the fiber core can leak 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 preparing a high-sensitivity optical fiber sensing device. [0003] Existing fiber optic temperature sensors usually use the temperature-sensitive characteristics of fiber Br...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K11/32G01K11/3206G01K11/324
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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