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Polarization maintaining hollow-core anti-resonance optical fiber

A polarization-maintaining and anti-resonance technology, applied in the direction of polarized optical fiber, clad optical fiber, light guide, etc., can solve the problems of polarization mode dispersion and affecting the functional stability of optical devices, and achieve high polarization extinction ratio, obvious effect of high-order mode leakage, and polarization Maintain good effect

Active Publication Date: 2021-08-24
广州大鱼创福科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the surface of the optical fiber is uneven or the structure is incomplete, the propagation of optical signals or optical energy in the optical fiber will easily lead to polarization mode dispersion, which will affect the stability of optical device functions

Method used

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  • Polarization maintaining hollow-core anti-resonance optical fiber
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  • Polarization maintaining hollow-core anti-resonance optical fiber

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Embodiment

[0037] Taking the working wavelength of 1550nm as an example, the inventive principle is also applicable to each wavelength.

[0038] Such as figure 1 shown, calculated using finite element simulation figure 1 For the structure shown, the relevant parameters of the polarization-maintaining hollow-core anti-resonant fiber are as follows: the length of the connecting tube is 2.5 μm, the inner diameter of the cladding ring is 71.5 μm; the outer diameter of the outer cladding is 88 μm; the inner diameter of the circular cladding tube 6 and the semi-elliptical cladding tube 4 The inner diameter of the major axis: 20 μm; the inner diameter of the semi-elliptic nesting tube 5 is 9 μm; the inner diameter of the circular nesting tube 7 is 15 μm; the connecting tube 2, the cladding ring 3, the semi-elliptical cladding tube 4, and the semi-elliptical nesting tube 5. The wall thickness of the circular cladding tube 6 is 0.375 μm; the wall thickness of the circular nesting tube 7 is 1.58 ...

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Abstract

The invention discloses a polarization maintaining hollow-core anti-resonance optical fiber. The optical fiber comprises an outer cladding layer, two connecting tubes, cladding rings, six semi-elliptical cladding tubes tightly attached to the cladding rings, two round cladding tubes tightly attached to the cladding rings, semi-elliptical nesting tubes which are arranged on the semi-elliptical cladding tubes and have the same inner wall thickness, round nesting tubes which are arranged in the round cladding tubes and have the same wall thickness, and a fiber core area. The gaps between the four semi-elliptical cladding tubes above and below the X axis and the adjacent X-axis semi-elliptical cladding tubes are equal; the gaps between the circular cladding tube and the adjacent semi-elliptical cladding tube are equal; the semi-elliptical nested tubes are arranged at axial symmetry positions in the corresponding semi-elliptical cladding tubes and are connected with the cladding rings; the circular nesting tubes are arranged in the circular cladding tubes in a clinging manner and correspond to the clinging positions of the cladding rings and the round cladding tubes; and each tube is made of pure quartz glass, and the fiber core area and other internal space are filled with air. The optical fiber has the characteristics of low loss, high polarization extinction ratio and good polarization maintaining characteristic at the working wavelength.

Description

technical field [0001] The invention belongs to the technical field of hollow-core optical fibers, and in particular relates to a hollow-core negative-curvature anti-resonance optical fiber with low loss and polarization maintaining. Background technique [0002] When the surface of the optical fiber is uneven or the structure is incomplete, the propagation of optical signals or optical energy in the optical fiber will easily lead to polarization mode dispersion, which will affect the stability of the optical device function. Therefore, the polarization-maintaining fiber has been studied. The principle is to make the polarization fundamental mode on one axis have a high loss and cannot propagate in the fiber; the polarization fundamental mode on the other axis has a low loss and can normally propagate in the fiber to ensure The optical signal or optical energy can be stably output under the conditions of optical fiber bending or stress. Polarization-maintaining fibers elimi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/024G02B6/02
CPCG02B6/024G02B6/02342
Inventor 赵兴涛项景亮吴轩瑞李志伟马文博
Owner 广州大鱼创福科技有限公司
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