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A double-layer connection type liquid core antiresonant optical fiber and its temperature measuring device and method

A technology of temperature measurement and anti-resonance, which is applied in the field of optics and lasers, can solve the problems of limited working band and limited resonance strength, and achieve the effects of improving temperature control accuracy, widening the working spectral range and expanding the working spectral range

Active Publication Date: 2021-12-14
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operating band is limited and the resonance strength is limited

Method used

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  • A double-layer connection type liquid core antiresonant optical fiber and its temperature measuring device and method
  • A double-layer connection type liquid core antiresonant optical fiber and its temperature measuring device and method
  • A double-layer connection type liquid core antiresonant optical fiber and its temperature measuring device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 1. A double-layer connection type liquid core antiresonant optical fiber, the schematic cross-section of which is shown in figure 1 , a liquid core and gold-filled bonded anti-resonant optical fiber, the double-layer bonded liquid-core anti-resonant fiber described in this embodiment includes an outer cladding 1, and an outer cladding along the inner circumferential direction of the outer cladding 8 pairs of connecting holes evenly distributed, the connecting holes are a connecting structure in which the outer pipe 2 of the connecting pipe and the inner pipe 4 of the connecting pipe form holes, the outer wall of the outer pipe of the connecting pipe is tangent to the inner wall of the outer cladding, and the outer wall of the outer pipe of the connecting pipe It is tangent to the outer wall of the inner tube of the coupling tube; the center of the inner tube of the coupling tube is located on the connecting line between the center of the outer tube of the coupling tube a...

Embodiment 2

[0070] 1. A double-layer connection type liquid core antiresonant optical fiber, the schematic cross-section of which is shown in Figure 5 , a liquid-core gold-filled junction anti-resonance optical fiber specifically described. The double-layer junction liquid-core anti-resonance fiber described in this embodiment includes an outer cladding 1, and a uniform circumferential layer arranged in the outer cladding along the inner side of the outer cladding 8 pairs of coupling holes are distributed, and the coupling holes are a coupling structure in which the outer tube 2 of the coupling tube and the inner tube 4 of the coupling tube form a hole, the outer wall of the outer tube of the coupling tube is tangent to the inner wall of the outer cladding, and the outer wall of the outer tube of the coupling tube and the inner wall of the outer cladding are tangent. The outer wall of the inner tube of the coupling tube is tangent; the center of the inner tube of the coupling tube is loca...

Embodiment 3

[0087] A double-layer connection type liquid core antiresonant fiber, its cross-sectional schematic diagram is as follows Figure 8 , a liquid-core gold-filled junction anti-resonance optical fiber specifically described. The double-layer junction liquid-core anti-resonance fiber described in this embodiment includes an outer cladding 1, and a uniform circumferential layer arranged in the outer cladding along the inner side of the outer cladding 8 pairs of coupling holes are distributed, and the coupling holes are a coupling structure in which the outer tube 2 of the coupling tube and the inner tube 4 of the coupling tube form a hole, the outer wall of the outer tube of the coupling tube is tangent to the inner wall of the outer cladding, and the outer wall of the outer tube of the coupling tube and the inner wall of the outer cladding are tangent. The outer wall of the inner tube of the coupling tube is tangent; the center of the inner tube of the coupling tube is located on t...

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Abstract

A double-layer connection type liquid core anti-resonant optical fiber and its temperature measuring device and method belong to the field of optics and laser. The double-layer connection type liquid core anti-resonant optical fiber includes an outer cladding, and more than 6 pairs of connecting holes arranged in the outer cladding and uniformly distributed along the inner circumferential direction of the outer cladding; the radius of the outer hole of the connecting hole is greater than the radius of the inner hole; In the inner hole formed by the inner tube of the connecting tube, select 1-2 holes to fill with materials that are prone to SPR; fill the central area with liquid as the liquid core, and the maximum value of the refractive index change range of the filled liquid affected by temperature is smaller than the refractive index of the optical fiber material. And the refractive index difference with the optical fiber material is greater than 0.05. The double-layer connection type liquid core anti-resonant fiber is combined with the light source, input fiber, output fiber and signal detection and analysis components to form a temperature measurement device. The advantages of wide spectrum, high resonance intensity and high measurement sensitivity.

Description

technical field [0001] The invention relates to the field of optics and laser technology, in particular to the field of hollow-core microstructure optical fiber and sensing technology, in particular to a double-layer connection type liquid-core anti-resonance optical fiber and a temperature measuring device and method thereof. Background technique [0002] With the development of technology, antiresonant fiber has become the frontier field of microstructure fiber research. Anti-resonance optical fiber technology is mainly used in laser transmission and sensing. Compared with traditional optical fiber technology, it has the characteristics of low transmission loss, high quality, wide transmission range, and can break through the limitation of material transmission range. In terms of sensing, due to its large space The core structure also has broad application prospects in gas and liquid detection, and the anti-resonance fiber can greatly improve the stability of the fiber opt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K11/32G02B6/02
CPCG01K11/32G02B6/02385
Inventor 程同蕾王启明李曙光闫欣张学楠王方
Owner NORTHEASTERN UNIV LIAONING