Optical fiber sensing device based on optical fiber bending deformation

A technology of optical fiber sensing and optical fiber, which is applied in the direction of using optical devices to transmit sensing components, measuring devices, and measuring electrical variables. problems, to achieve the effect of flexible use, convenient processing and simple structure
CN102455191AInactive Publication Date: 2012-05-16XIAN JINHE OPTICAL TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN JINHE OPTICAL TECH
Publication Date
2012-05-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an optical fiber sensing device based on optical fiber bending deformation. The sensing device is characterized by comprising a baseplate I, wherein at least one of the baseplate I, a fish back I and a fish back II arranged on the baseplate I or at least one part of three is composed of a function material, and the fish back I is provided with a deformation teeth I; the fish back II is provided with a deformation teeth II, the deformation teeth I and the deformation teeth II are corresponding in a staggered manner, the deformation teeth II is provided with a signal optical fiber, and the signal optical fiber is a of multiturn surrounding shape and clamped between the deformation teeth I and the deformation teeth II; and the signal optical fiber is connected with a prolonging optical fiber, the prolonging optical fiber is connected with a testing unit, and the testing unit is connected with a processing unit. The sensing device provided by the invention has the advantages of being capable of carrying out amplification on the collected physical quantity, improving the accuracy of the sensing device combine and prolonging the service life of the signal optical fiber; and the structure is simple, and the sensing device is convenient to use and convenient to popularize and use.
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Description

technical field

[0001] The invention relates to a detection device, in particular to an optical fiber sensing device based on optical fiber bending deformation. Background technique

[0002] At present, the measurement methods used in fiber optic current sensors mainly include the polarization state measurement method of light, the interferometry method of light and the wavelength modulation measurement method. The measurement of the polarization state of light is mainly based on the Faraday magneto-optic effect. The magneto-optic crystal is used to change the polarization direction of light under the external field to achieve the test purpose. It is a relatively mature sensor that has been researched and has been commercialized. Optical interferometry mainly uses the external field to change the optical path difference of coherent light for measurement, mainly based on the measurement of Michelson interferometer or Mach-Zehnder interferometer. Wavelength modulation measure...

Claims

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