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Extrusion preparation method of all-solid-state photonic crystal optical fiber preform

A technology of photonic crystal fiber and optical fiber preform, which is applied in the direction of glass manufacturing equipment, glass fiber products, manufacturing tools, etc., can solve problems such as structural deformation of optical fiber preform, achieve stable core-cladding ratio, overcome the difficulty of core Oxidized, clear and complete effect of core-cladding interface

Active Publication Date: 2020-11-06
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The extrusion preparation method of the all-solid-state photonic crystal optical fiber preform can effectively control the deformation of the core array, improve the interface between the core-clad glasses, avoid the adverse effects of impurities such as oxygen in the air on the core, and improve the yield of the obtained optical fiber preform. Improve the quality of the core glass surface and cladding glass surface, and solve the problem of structural deformation of optical fiber preform products in the subsequent drawing process

Method used

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  • Extrusion preparation method of all-solid-state photonic crystal optical fiber preform
  • Extrusion preparation method of all-solid-state photonic crystal optical fiber preform
  • Extrusion preparation method of all-solid-state photonic crystal optical fiber preform

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Embodiment 1

[0050] In the first embodiment, it is assumed that the all-solid-state photonic crystal fiber preform to be prepared is a chalcogenide photonic crystal fiber preform, and the selected core glass ingot 5 and cladding glass ingot 7 are both chalcogenide glass ingots. Specifically, the core glass ingot 5 is As 2 Se 3 , the cladding glass ingot 7 is As 2 S 3 ; see figure 1 As shown, the extrusion preparation method of the all-solid-state photonic crystal fiber preform in this embodiment includes the following steps 1 to 10:

[0051] Step 1, pre-preparing extrusion cylinder 1, extrusion chamber 2, extrusion head 4, fiber core exit mold 6, preform exit mold 8, first ejector pin 3 and second ejector pin 12;

[0052] Wherein, the extrusion cylinder 1 has an upper opening and the bottom of the extrusion cylinder 1 is provided with a preform outlet 10; the extrusion chamber 2 has a top opening 9 and the bottom of the extrusion chamber 2 is provided with a lower opening, and the lowe...

Embodiment 2

[0075] In the second embodiment, it is assumed that the all-solid-state photonic crystal fiber preform to be prepared is a heavy metal oxide glass photonic crystal fiber preform, and the selected core glass ingot 5 and cladding glass ingot 7 are both heavy metal oxides Glass ingot, specifically, core glass ingot 5 is TeO 2 -Nb 2 o 5 -PbO, cladding glass ingot 7 is TeO 2 -GeO 2 -Nb 2 o 5 ; see Figure 1 to Figure 5 As shown, the extrusion preparation method of the all-solid-state photonic crystal fiber preform in this embodiment includes the following steps 1 to 10:

[0076] Step 1, pre-preparing extrusion cylinder 1, extrusion cavity 2, extrusion head 4, fiber core exit mold 6 (with the mold structure in Embodiment 1 can be different), preform exit mold 8 (with the mold structure in Embodiment 1 The mold structure can be different), the first ejector pin 3, the second ejector pin 12; wherein, the extrusion cylinder 1 has an upper opening and the bottom of the extrusion ...

Embodiment 3

[0099] In the third embodiment, it is assumed that the all-solid-state photonic crystal fiber preform to be prepared is a fluoride glass photonic crystal fiber preform, and the selected core glass ingot 5 and cladding glass ingot 7 are both fluoride glass ingots , specifically, the core glass ingot 5 is Er 3+ Doped ZBLAN glass, cladding glass ingot 7 is undoped ZBLAN glass; see Figure 1 to Figure 5 As shown, the extrusion preparation method of the optical fiber preform in this embodiment includes the following steps 1 to 10:

[0100] Step 1, pre-preparing extrusion cylinder 1, extrusion cavity 2, extrusion head 4, fiber core exit mold 6 (with the mold structure in embodiment one or embodiment two can be different), preform exit mold 8 (and implementation The mold structure in example one or embodiment two can be different), the first ejector pin 3, the second ejector pin 12; Wherein, the extrusion barrel 1 has an upper opening and the bottom of the extrusion barrel 1 is prov...

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Abstract

The invention relates to an extrusion preparation method of an all-solid-state photonic crystal optical fiber preform. The extrusion preparation method comprises the following steps: allowing fiber core outlets of a fiber core outlet mold and a cladding glass outlet to be positioned on the same plane by utilizing a first jacking rod; then under the pressure applied by a second jacking rod, enabling fiber core glass to form a fiber core glass column array in virtue of the fiber core outlet mold provided with a plurality of the arranged fiber core outlets; and allowing the fiber core glass column array and cladding glass to be simultaneously extruded from a preform outlet at a constant speed. Thus, the fiber core glass is prevented from deforming or being adversely influenced by impurities such as oxygen in external air during extrusion process at the preform outlet, so the defects on the surface of the fiber core glass and the surface of cladding glass can be effectively removed, and the regularity and the optical quality of fiber cores in the obtained optical fiber preform are improved.

Description

technical field [0001] The invention relates to the field of optical fiber prefabricated rods, in particular to an extrusion preparation method of an all-solid-state photonic crystal optical fiber preformed rod. Background technique [0002] Compared with traditional optical fibers, Photonic Crystal Fiber (PCF) or Micro-Structured Fiber (MSF) has many unique and novel physical characteristics, such as: controllable nonlinearity, endless single-mode characteristics, adjustable singular dispersion, low bending loss, and large mode field area, etc. These characteristics are difficult to achieve with conventional single-mode fibers. Therefore, photonic crystal fiber has attracted extensive attention from the scientific community at home and abroad; at the same time, the manufacturing technology of photonic crystal fiber has also made great progress. [0003] According to the different structures of photonic crystal fibers, photonic crystal fibers can be simply divided into air-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/012
CPCC03B37/01208C03C3/321C03C13/043C03C13/042C03C13/048C03B37/01274C03B37/10C03B2201/78C03B2201/82C03B2201/86C03B2203/42C03C3/12C03C3/23C03C3/253C03C3/325C03B2203/10
Inventor 王训四董友仁王弦歌钟明辉王荣平聂秋华沈祥戴世勋刘自军刘永兴
Owner NINGBO UNIV