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Fabrication method of miniature optical fiber Fabry-Perot interferometer with controllable cavity length

A manufacturing method and interferometer technology, applied in the direction of instruments, using optical devices, using optical devices to transmit sensing components, etc., can solve the problems of difficult control of structure size, difficulty in making FPI of optical fiber micro-air cavity, etc., and achieve adjustable welding parameters , flexible control of discharge times and discharge intensity, simple welding method

Inactive Publication Date: 2018-07-27
NORTHEASTERN UNIV
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Problems solved by technology

[0003] The present invention solves the current problems such as difficulty in making FPI of optical fiber micro-air cavity and difficulty in controlling structural size, and proposes a size-controllable, repeatable, high-efficiency micro-air cavity FPI manufacturing method, which plays a role in the interferometric sensor based on Fabry Perot plays a vital role

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  • Fabrication method of miniature optical fiber Fabry-Perot interferometer with controllable cavity length
  • Fabrication method of miniature optical fiber Fabry-Perot interferometer with controllable cavity length
  • Fabrication method of miniature optical fiber Fabry-Perot interferometer with controllable cavity length

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[0017] In order to make the above objects and advantages more comprehensible, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] The concrete implementation process of the present invention is as follows:

[0019] First, the single-mode fiber A1 is cut flat with a cutter, and then the single-mode fiber A1 and the hollow-core fiber 2 are spliced ​​with a fusion splicer to form the single-mode fiber and the hollow-core fiber section 4, and then the single-mode fiber and the hollow-core fiber section 4 are connected to each other. The single-mode fiber B3 is spliced ​​without collapse, and the spliced ​​structure is discharged and tapered at the center of the hollow fiber by a fusion splicer. The parameters of the discharge arc are set to: discharge intensity 80unit, discharge time 200ms, and the single advance length of the electrode is 3μm. Until fusing, discharge at the cone head. With the incr...

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Abstract

The invention belongs to the technical field of optical fiber device fabrication, and discloses a fabrication method of a miniature optical fiber Fabry-Perot interferometer (FPI) with a controllable cavity length. A method in which a single mode optical fiber splices a hollow optical fiber (HCF) and a discharging taper is adopted to fabricate a miniature air cavity FPI. The structural size can becontrolled by adjusting a series of parameters such as an HCP length and various welding parameters such as a taper length, a two-fiber overlapping amplitude, a discharge parameter and the number of discharge times. By means of the method, the size-controllable, repeatable and efficient miniature air cavity Fabry-Perot interferometer can be obtained, and plays a vital role in an interference-typesensor based on Fabry-Perot. The method can make the microcavity level and perpendicular length of the FPI cover from a small value to a large value, and efficient fabrication can be achieved. By means of the method, according to user requirements, miniature air cavity FPIs with random sizes can be fabricated. Besides, a probe of the miniature air cavity FPI can be used for detection of parameterssuch as axial stress and temperature.

Description

technical field [0001] The invention belongs to the technical field of optical fiber device manufacturing, and relates to a manufacturing method of a miniature optical fiber Fabry-Perot Interferometer (Fabry-Perot Interferometer, FPI) with controllable cavity length. Background technique [0002] Since the successful development of low-loss optical fiber in the 1970s, optical fiber has gradually developed from the field of communication to the field of sensing. Optical fiber sensing technology is a new type of sensing technology that senses and transmits external parameters with light waves as the carrier and optical fibers as the medium. Compared with traditional sensors, fiber optic sensors have the advantages of high sensitivity, anti-interference, simple structure, small size, light weight, bendable optical path, little impact on the measured medium, and easy to form a network. At present, fiber optic sensing technology has been widely used It is used in national defens...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B9/02G01D5/353
CPCG01B9/02G01D5/35312
Inventor 赵勇陈茂庆吕日清
Owner NORTHEASTERN UNIV
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