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A kind of photonic crystal fiber and its preparation method

A photonic crystal fiber and fiber core technology, applied in cladding fiber, optical waveguide light guide, optics, etc., can solve the problems of difficult to ensure the consistency of photonic crystal fiber, difficult to ensure structural stability, complex manufacturing process, etc. The effect of mass production, low loss and simple preparation method

Active Publication Date: 2021-11-16
宏安集团有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Non-circular fiber core structures (such as square, hexagonal, pentagonal, elliptical, rectangular, rhombus, etc.) are difficult to ensure the stability of the structure during the drawing process, making the manufacturing process extremely complicated, and it is difficult to guarantee the photon produced Crystal fiber conforms to design requirements, reducing its viability

Method used

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  • A kind of photonic crystal fiber and its preparation method
  • A kind of photonic crystal fiber and its preparation method
  • A kind of photonic crystal fiber and its preparation method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0037] The present invention provides a kind of preparation method of photonic crystal fiber, it comprises the following steps:

[0038] (1) Put the TOPAS 5013L-10 granular material into the screw extruder, extrude a rod with a diameter of 20mm, control the extrusion speed at 1-5m / min, and control the extrusion temperature at 140-160°C. The TOPAS5013L-10 granular material is dried before being put into the screw extruder. The treatment method is: put the TOPAS5013L-10 granular material into a vacuum drying oven for drying treatment, the temperature is controlled at 50-75 °C, and the time is controlled at 10- 30 minutes, the vacuum degree is controlled at 1~5×10 -2 Pa.

[0039] (2) Put the rod extruded in step (1) into a plastic extruder, and extrude the rod extruded in step (1) into a prefabricated porous optical fiber with a diameter of 20mm that meets the structural requirements through a split extrusion die For rods, the extrusion speed is controlled at 1-5m / min, and the ...

Embodiment 2

[0042] The present invention provides a kind of preparation method of photonic crystal fiber, it comprises the following steps:

[0043] (1) Put the TOPAS 5013L-10 granular material into the screw extruder, extrude a rod with a diameter of 25mm, control the extrusion speed at 1-5m / min, and control the extrusion temperature at 140-160°C. The TOPAS5013L-10 granular material is dried before being put into the screw extruder, and the treatment method is the same as in Example 1, so it is not repeated here.

[0044] (2) Put the rod extruded in step (1) into a plastic extruder, and extrude the extruded rod in step (1) into a prefabricated porous optical fiber with a diameter of 25mm that meets the structural requirements through a split extrusion die For rods, the extrusion speed is controlled at 1-5m / min, and the extrusion temperature is controlled at 140-160°C.

[0045] (3) Put the porous optical fiber preform obtained in step (2) into an optical fiber drawing tower, control the ...

Embodiment 3

[0047] The present invention provides a kind of preparation method of photonic crystal fiber, it comprises the following steps:

[0048] (1) Put the TOPAS 5013L-10 granular material into the screw extruder, extrude a rod with a diameter of 25mm, control the extrusion speed at 1-5m / min, and control the extrusion temperature at 140-160°C. The TOPAS5013L-10 granular material is dried before being put into the screw extruder, and the treatment method is the same as in Example 1, so it is not repeated here.

[0049] (2) Put the rod extruded in step (1) into a plastic extruder, and extrude the extruded rod in step (1) into a prefabricated porous optical fiber with a diameter of 25mm that meets the structural requirements through a split extrusion die For rods, the extrusion speed is controlled at 1-5m / min, and the extrusion temperature is controlled at 140-160°C.

[0050] (3) Put the porous optical fiber preform obtained in step (2) into an optical fiber drawing tower, control the ...

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Abstract

The invention provides a photonic crystal fiber and a preparation method thereof, which solve the technical problems of complex structure and high loss of the existing terahertz wave photonic crystal fiber, which includes a core layer and a cladding layer, and the core layer is provided with a thin-walled circular inner cylinder 1. Cross grid plate, the cross grid plate divides the thin-walled circular inner cylinder into four core layer air channels; the cladding layer is equipped with a thin-walled circular outer cylinder and the second grid plate; , and both are concentric; one end of the second grid plate is connected to the outer wall of the thin-walled circular inner cylinder, and the other end is connected to the inner wall of the thin-walled circular outer cylinder, and the grid plate evenly separates the thin-walled circular inner cylinder from the thin-walled circular outer cylinder There are four cladding air channels; the minimum angle between the first grid plate and the adjacent second grid plate is 10-45°; the porosity of the core layer is 81-86%, and the porosity of the cladding It is 92-94%, and it also discloses a preparation method, which can be widely used in the technical field of photonic crystal fiber preparation.

Description

technical field [0001] The invention relates to the technical field of photonic crystal fiber preparation, in particular to a photonic crystal fiber and a preparation method thereof. Background technique [0002] Terahertz waves have a huge frequency range between infrared and microwave, and occupy a special position in the electromagnetic spectrum, and are called "life rays". Terahertz waves have broad application prospects in imaging, medicine, monitoring, communication, etc. Microstructured optical fibers have wide applications in terahertz wave guidance, not only for optical communication, but also for non-invasive medical imaging, sensing, security, spectroscopy, oral health care, cancer cell detection, biotechnology, telecommunications, military, There are many important applications in environmental applications, solar panel defect detection, dielectric materials, drug testing, and astronomy. [0003] The transmission loss of the guiding medium of THz waves is a key...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/02B29D11/00B29C48/32B29C48/92B29C71/02
CPCB29C71/02B29C2071/022B29D11/00663B29C48/32B29C48/92B29C2948/9258B29C2948/92704G02B6/02319G02B6/02342
Inventor 陈卫东王传杰张鹏魏敏张桂林张明立
Owner 宏安集团有限公司