Optical fiber sensor based on graphene and manufacturing method thereof
An optical fiber sensor and a manufacturing method technology, applied in the field of sensors, can solve the problems of large volume, narrow frequency band, long response time, etc., and achieve the effects of small volume, wide response range, and improved response speed
Inactive Publication Date: 2017-12-01
CHONGQING UNIV
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[0004] The invention provides a graphene-based optical fiber sensor and its manufacturing method to solve the problems of large volume, narrow frequency band and long response time in current voltage sensors
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[0023] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings For further detailed explanation.
[0024] In the description of the present invention, unless otherwise specified and limited, it should be noted that the term "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be Directly connected or indirectly connected through an intermediary, those skilled in the art can understand the specific meanings of the above terms according to specific situations.
[0025] see figure 1 , is a ...
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The invention provides an optical fiber sensor based on graphene and a manufacturing method thereof. The optical fiber sensor comprises a substrate, a graphene thin film, an Evanescent field optical fiber arranged on the substrate, and a first electrode and a second electrode which are arranged on the substrate and are located at two sides of the Evanescent field optical fiber respectively, wherein the graphene thin film is paved at a part, which has overflowed light while an optical signal is transmitted, of the Evanescent field optical fiber at least and is in contact with the first electrode and the second electrode respectively; the first electrode and the second electrode are used for inputting a signal to be detected respectively and transmitting the signal to be detected to the graphene thin film; under the action of the signal to be detected, the effective refractive index of the graphene thin film is changed; after the effective refractive index of the graphene thin film is changed, a light spectrum of output light of the Evanescent field optical fiber is changed; the signal to be detected is measured according to change conditions of the light spectrum. By adopting the optical fiber sensor based on graphene and the manufacturing method thereof, a response speed can be improved, a measurement range is expanded and an integration level is improved.
Description
technical field [0001] The invention belongs to the field of sensors, in particular to a graphene-based optical fiber sensor and a manufacturing method thereof. Background technique [0002] Electricity and light are two indispensable basic elements in human production and life, so optoelectronic devices are also playing an increasingly important role in daily life. With the development of science and technology, the miniaturization of optoelectronic devices is the development trend of scientific research and technological innovation. A voltage sensor is a device that can measure voltage. Exploring broadband, large dynamic range, and integration are its development goals and directions. [0003] Electricity plays a very important role in human life, so it is of great significance for the measurement and sensing of voltage and high voltage. There are many traditional methods for measuring high voltage: electrostatic voltmeter, electromagnetic voltage transformer, resistor d...
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IPC IPC(8): G01N21/41
CPCG01N21/41
Inventor 朱涛高磊
Owner CHONGQING UNIV