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

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

Inactive Publication Date: 2019-06-28
NORTHEASTERN UNIV LIAONING
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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 a miniature optical fiber Fabry-Platino interferometer with controllable cavity length
  • Fabrication method of a miniature optical fiber Fabry-Platino interferometer with controllable cavity length
  • Fabrication method of a miniature optical fiber Fabry-Platino 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 manufacturing, and discloses a method for manufacturing a micro optical fiber Fabry-Perot Interferometer (FPI) with controllable cavity length. Single-mode fiber splicing hollow core fiber (HCF) and discharge tapering method are used to fabricate micro-air cavity FPI. The structural size can be controlled by adjusting a series of parameters, such as HCF length and various welding parameters, such as taper length, overlap amplitude of two fibers and discharge parameters and discharge times. This method can obtain a size-controllable, repeatable, and efficient micro-air cavity Fabry-Plot interferometer, which plays a crucial role in Fabry-Plot based interferometric sensors. This method can make the horizontal and vertical lengths of FPI microcavities from very low values ​​to very high values ​​to achieve high-efficiency production. This method can manufacture micro air cavity FPI of any size according to user requirements. In addition, the micro air cavity FPI probe can be used to detect parameters such 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...

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Application Information

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