Composite maximum-dip-angle fiber bragg grating biochemical sensor and production method thereof

A technology of biochemical sensors and tilted fiber gratings, which is applied to instruments, scientific instruments, and material analysis through optical means, and achieves the effects of simple structure, high safety, and strong environmental adaptability

Inactive Publication Date: 2015-05-06
CHONGQING UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0007] All kinds of composite fiber Bragg grating biochemical sensors with temperature compensation function that have been reported so far are mostly based on the

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  • Composite maximum-dip-angle fiber bragg grating biochemical sensor and production method thereof
  • Composite maximum-dip-angle fiber bragg grating biochemical sensor and production method thereof
  • Composite maximum-dip-angle fiber bragg grating biochemical sensor and production method thereof

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Example Embodiment

[0034] See Figure 1 to Figure 6 , A composite extremely tilted fiber grating biochemical sensor, comprising a fiber core 3 and a fiber cladding 2 that wraps the fiber core 3, characterized in that: a first tilted fiber grating 4 is provided in the front section of the fiber core 3, and The angle θ between the inclined grating fringes of a tilted fiber grating 4 and the longitudinal axis of the fiber is 45°; the first tilted fiber grating 4 is used as the polarizer of the composite biochemical sensor; the first half of the middle section of the fiber core 3 is provided with a first half Two tilted fiber gratings 5, the second tilted fiber gratings 5 ​​are used as optical resonant couplers of the fiber core 3 and the fiber cladding 2; the angle δ between the tilted grating fringes of the second tilted fiber grating 5 and the longitudinal axis of the fiber is 79 °~84°; the fast axis and the slow axis of the first tilted fiber grating 4 are parallel to the fast axis and the slow a...

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Abstract

The invention discloses a composite maximum-dip-angle fiber bragg grating biochemical sensor and a production method thereof. The composite maximum-dip-angle fiber bragg grating biochemical sensor comprises an optical fiber core and an optical fiber cladding, and is characterized in that a first oblique fiber bragg grating is arranged on the front section of the optical fiber core, and an angle formed between an oblique grating stripe of the first oblique bragg grating and a longitudinal axis of an optical fiber is 45 degrees; a second oblique fiber bragg grating is arranged on the front half section of the middle section of the optical fiber core, and an angle formed between an oblique grating stripe of the second oblique fiber bragg grating and the longitudinal axis of the optical fiber is 79 to 84 degrees; a fiber bragg grating is arranged on the rear half section of the middle section of the optical fiber core; the outer surfaces of the front section and the rear section of the optical fiber cladding are respectively coated with an optical fiber protective coating; the outer surface of the middle section of the optical fiber cladding is provided with a silane layer in an adsorbing manner; the outer surface of the silane layer is provided with an aptamer layer, and the aptamer layer has a selective absorption or sensitive characteristic for a target bio-molecular or a to-be-tested chemical component. The composite maximum-dip-angle fiber bragg grating biochemical sensor can be widely applied to the fields such as biology, chemical industry, medicine and life science.

Description

technical field [0001] The invention relates to an optical fiber sensor, in particular to a composite type extremely inclined optical fiber grating biochemical sensor and a manufacturing method thereof. Background technique [0002] With the rapid development of many biomedical and life science applications, optics and its technology have entered an important interdisciplinary field - bio-optics. A focal point in this huge intersecting field——optical sensor is undergoing a new transformation, that is, research and development of optical fiber biochemical information sensor with new structure. Due to the rapid development of this intersecting field, optical fiber biochemical information sensors with extremely high biological sensitivity and selectivity are feasible, and may replace traditional solution assay methods for the exploration and discovery of genes, nutrition, and drugs, as well as for Food industry, national security and environmental monitoring. [0003] In the ...

Claims

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Application Information

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IPC IPC(8): G01N21/23G01K11/32G01K11/3206
Inventor 罗彬彬赵明富石胜辉吴胜昔全晓莉钟年丙陈立功肖汉光周登义汪治华白军
Owner CHONGQING UNIV OF TECH
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