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Extrinsic type Fabry-Perot sensor and manufacture method thereof

A manufacturing method and extrinsic technology, which is applied in the field of extrinsic Fabry-Perot sensors, can solve the problems of low yield, high cost, and high difficulty in making capillary quartz glass, and achieve high temperature sensitivity, Good temperature characteristics, convenient and flexible manufacturing process

Active Publication Date: 2012-12-12
JIANGSU NANFANG COMM TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] In the conventional extrinsic Fabry-Perot optical fiber sensor, the fabrication of the capillary quartz glass forming the F-P cavity is very difficult, because the precision of the inner hole matched with the optical fiber is submicron, It needs to be produced by a special method, the cost is high and the yield is low

Method used

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  • Extrinsic type Fabry-Perot sensor and manufacture method thereof
  • Extrinsic type Fabry-Perot sensor and manufacture method thereof
  • Extrinsic type Fabry-Perot sensor and manufacture method thereof

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Embodiment Construction

[0032] The present invention will now be described in further detail in conjunction with the accompanying drawings and preferred embodiments. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0033] Such as figure 2 As shown, an extrinsic Fabry-Perot sensor includes two sections of optical fiber 1, two sections of metal ferrule 2 and metal sleeve 3, and the inner side of each section of metal ferrule 2 is fixed with an optical fiber 1. The outer sides of the two metal ferrules 2 are encapsulated with metal sleeves 3 , and the optical fiber 1 and the metal ferrules 2 are preferably bonded by epoxy resin 4 . Opposite end face groups 5 are formed at the ends of the two sections of optical fiber 1 and / or metal ferrule 2 , and the end face group 5 forms a hollow cavity 6 with the metal sleeve 3 , and reflective film...

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Abstract

The invention relates to an extrinsic type Fabry-Perot sensor which comprises two segments of optical fibers, two segments of metallic plugging cores and metallic sleeves, wherein the inner side of each segment of the metallic plugging core is fixed with one segment of the optical fiber, the outer sides of the two segments of the metallic plugging core are encapsulated with the metallic sleeves, an end face group is oppositely formed on the end parts of the two segments of the optical fibers and / or the two segments of the metallic plugging cores, a hollow cavity is formed by the end face group and the metallic sleeves, and the end face group is coated with a reflecting film. Compared with the cavity structure of a common optical fiber method Fabry-Perot sensor manufactured by using capillary quartz glass, the cavity structure of the invention has the advantages of simple process, convenient manufacturing, low cost and the like.

Description

technical field [0001] The invention relates to the field of optical fiber sensors, in particular to an extrinsic Fabry-Perot sensor. Background technique [0002] The Fabry-Perot sensor is an optical Fabry-Perot interferometer (Fabry-Perot Interferometer, FPI) based on the principle of multi-beam interference. Because the working principle of FPI is through two reflective The change of the distance between the surfaces is used to measure the change of the measured point, so in the field of sensing, it can be made very small. Unlike other types of fiber optic sensing interferometers, such as Mach-Zehnder, Michelson, Sagnac and other two-beam interferometers, FPI does not require fiber optic coupler. This makes FPI ideal for small sensing structures. The rapid development of FPI also lies in the fact that it can greatly reduce the cost of multi-point monitoring through technologies such as space division, time division, frequency division, and related multiplexing. Accord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/38G01K11/32G01L1/24G01L11/02
Inventor 陈炳炎石明
Owner JIANGSU NANFANG COMM TECH
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